Nummer Datum Autor Titel Abstract/MSC
2136 01.12.2000 Christian Săcărea Metric contexts
2135 01.12.2000 Koch, Thorsten
Martin, Alexander
Voß, Stefan
SteinLib: An Updated Library on Steiner Tree Problems in Graphs MSC: 90C10; 90C27
In this paper we present the 'SteinLib', a library of data sets for the Steiner tree problem in graphs. This library extends former libraries on Steiner tree problems by many new interesting and difficult instances, most of them arising from real-world applications. We give a survey on the difficulty of these problem instances by stating references to state-of-the-art software packages that were the first or are currently among the best to solve these instances.
2134 01.12.2000 Christian Săcărea Boolean concept logic: A topological representation theory.
2133 01.12.2000 Krzysztof, Chelminski Global Existence of Weak-Type Solutions for Models of Monotone Type in the Theory of Inelastic Deformations
2132 01.12.2000 Glöckner, Helge
Winkelmann, Jörg
A property of locally compact groups
2131 01.12.2000 Plaskota, Leszek
Ritter, Klaus
Wasilkowski, Grzegorz W.
Average Case Complexity of Weighted Approximation and Integration over $\R_+$ We study weighted approximation and integration of Gaussian stochastic processes $X$ defined over $\R_+$ whose $r$th derivatives satisfy a Hölder condition with exponent $\beta$ in the quadratic mean. We assume that the algorithms use samples of $X$ at a finite number of points. We study the average case (information) complexity, i.e., the minimal number of samples that are sufficient to approximate/integrate $X$ with the expected error not exceeding $\e$. We provide sufficient conditions in terms of the weight and the parameters $r$ and $\beta$ for the weighted approximation and weighted integration problems to have finite complexity. For approximation, these conditions are necessary as well. We also provide sufficient conditions for these complexities to be proportional to the complexities of the corresponding problems defined over $[0,1]$, i.e., proportional to $\e^{-1/\alpha}$ where $\alpha=r+\beta$ for the approximation and $\alpha=r+\beta+1/2$ for the integration.
2130 01.10.2000 Klar, Axel
Unterreiter, Andreas
Uniform Stability of a Finite Difference Scheme for Transport Equations in Diffusive Regimes An asymptotic preserving numerical scheme (with respect to diffusion scalings) for a linear transport equation is investigated. The scheme is adopted from a class of schemes developped recently. Stability is proven uniformly in the mean free path under a CFL type condition turning into a parabolic CFL condition in the diffusion limit.
2129 01.10.2000 Klar, Axel
Thömmes, Guido
Numerical methods for radiative transfer equation in diffusive regimes In this paper, different approaches for the numerical solution of radiative heat transfer problems in diffusive regimes are considered. We discuss asymptotic preserving schemes, domain decomposition methods and the development of improved diffusion approximations. Problems related to glass manufacturing processes are numerically investigated.
2128 01.10.2000 Günther, Marco
Klar, Axel
Materne, Thorsten
Wegener, Raimund
An explicitly solvable kinetic model for vehicular traffic and associated macroscopic equations In the present paper a kinetic model for vehicular traffic is presented and investigated in detail. For this model the stationary distributions can be determined explicitly. A derivation of associated macroscopic traffic flow equations from the kinetic equation is given. The coefficients appearing in these equations are identified from the solutions of the underlying stationary kinetic equation and are given explicitly. Moreover, numerical experiments and comparisons between different macroscopic models are presented.
2127 01.10.2000 Neff, Patrizio Formulation of visco-plastic approximations in finite plasticity for a modell of small elastic strains. Part I: Modelling
2126 01.10.2000 Höllig, Klaus
Reif, Ulrich
Wipper, Joachim
Error Estimates for the web-Method
2125 01.10.2000 Roch, Steffen Algebras of approximation sequences: Fredholm theory in fractal algebras
2124 01.10.2000 Strahringer, Selma
Wille, Rudolf
Wille, Uta
Mathematical Support for Empirical Theory Building
2123 01.09.2000 Haller, Robert
Heck, Horst
Noll, André
Mikhlin's Theorem for operator-valued Fourier multiplies on $n$-dimensional domain
2122 01.09.2000 Desch, Wolfgang
Hieber, Matthias
Prüss, Jan
$L^p$-Theory of the Stokes equation in a half space
2121 01.09.2000 Dzinotyiweyi, Heneri A. M. Some aspects of Measure Algebras and invariant means on topological semigroups
2120 01.09.2000 Neumann, Andreas Invariant Convex Sets in Operator Lie Algebras
2119 01.09.2000 Neumann, Andreas An Infinite Dimensional Version of the Kostant Convexity Theorem
2118 01.09.2000 Hinze, Michael
Pinnau, René
Optimal Control of the Drift Diffusion Model for Semiconductor Devices
2117 01.09.2000 Wille, Rudolf Lebenswelt und Mathematik
2116 01.09.2000 Neeb, Karl-Hermann Locally finite Lie algebras with unitary highest weight modules MSC: 17B65; 17B05
In this paper we essentially classify all locally finite Lie algebras with an involution and a compatible root decomposition which permit a faithful unitary highest weight representation. It turns out that these Lie algebra have many interesting relations to geometric structures such as infinite-dimensional bounded symmetric domains and coadjoint orbits of Banach-Lie groups which are strong Kähler manifolds. In the present paper we concentrate on the algebraic strcuture of these Lie algebras, such as the Levi decomposition, the structure of the almost reductive and locally nilpotent part, and the structure action of the representation of the almost reductive algebra on the locally nilpotent ideal.
2115 01.08.2000 Alber, Hans-Dieter Existence of solutions to a class of quasi-static problems in viscoplasticity theory MSC: 35Q72; 74C10
We prove existence of solutions for quasi-static initial-boundary value problems to a class of constitutive equations with internal variables. This class consists of constitutive equations of monotone type with positive definite free energy. They model the deformation behavior of metallic bodies. The existence theorem is proved by reduction of the initial-boundary value problem to an abstract evolution equation with a time dependent maximal monotone evolution operator, and by application of known existence results for such evolution equations. The proofs are sketched. At the end an example is given for a constitutive equation satisfying the hypotheses of the existence theorem.
2114 01.08.2000 Puhlmann, Hermann
Artmann, Benno
Geometrisches Wurzelziehen mit dem Heron--Verfahren
2113 01.08.2000 Glöckner, Helge Functions Operating on Positive Semidefinite Quaternionic Matrices
2112 01.08.2000 Wille, Rudolf Eulers Speculum Musicum und das Instrument MUTABOR
2111 01.08.2000 Hofmann, Karl Heinrich Category Theoretical Thinking in the Theory of Compact Groups
2110 01.08.2000 Franz, Stephan
Kiehl, Martin
Sensitivity Analysis of Initial Value Problems with Error Control MSC: 65D25; 65L05; 65L07
In this article we present two FORTRAN-codes DOPRI8S and GRK4AS based on FORTRAN-subroutines for the solution of initial value problems for ordinary differential equations which calculate the sensitivity of the solution with respect to the initial values and the parameters. These subroutines compute the sensitivity by internal difference approximations. Compared to the classical external difference approximations we obtain higher accuracies and a better reliability due to error control. Moreover we can save execution time especially for implicit integration subroutines. These advantages are demonstrated by some examples.
2109 01.07.2000 Roch, Steffen Algebras of approximation sequences: Structure of fractal algebras
2108 01.07.2000 Kindler, Jürgen Separation theorems for abstract convex structures
2107 01.07.2000 Lehn, Jürgen
Rößler, Andreas
Schein, Oliver
Adaptive schemes for the numerical solution of SDEs--a comparison
2106 01.07.2000 Prediger, Susanne Nested Concept Graphs and Triadic Power Context Families
2105 01.07.2000 Groh, Bernd
Wille, Rudolf
Lattices of Triadic Concept Graphs
2104 01.07.2000 Chelminski, Krzysztof Coercive Approximation of Viscoplasticity and Plasticity
2103 01.07.2000 Neeb, Karl-Hermann Borel-Weil Theory for Loop Groups MSC: 22E67; 22E65
Let $K$ be a compact Lie group and $LK := C^\infty(\SS^1, K)$ the group of smooth loops with values in $K$. This is a group under pointwise multiplication and it carries the structure of a Lie group modeled over the Fréchet space $L\k := C^\infty(\SS^1, \k)$ of smooth loops with values in the Lie algebra of $\k$. These notes grew out of a reworking of the proof of the Borel--Weil theory for loop groups as it is presented in the book of Pressley and Segal. Our main objective is to develop the techniques which are relevant for this theory in the setting of the Fréchet groups of smooth loops from an analytic point of view. We describe an intrinsic construction of the irreducible positive energy representations which does not refer to embeddings of loop groups into infinite-dimensional classical Banach Lie groups.
2102 26.10.2000 Neeb, Karl-Hermann Infinite-dimensional Lie groups and their representations MSC: 22E65; 58B25
In this paper we discuss some of the basic general notions and results which play a key role in the representation theory of infinite-dimensional Lie groups modeled over sequentially complete locally convex spaces. In particular we deal with differentiability questions, smooth vectors, holomorphic vectors (for representations of complex groups), and with constructions of representations in spaces of holomorphic sections of line bundles.
2101 01.06.2000 Schwan, Stephanie
Lehn, Jürgen
Harth, Tobias
Kollmann, Franz Gustav
Identification of Material Parameters for Inelastic Constitutive Models: Statistical Analysis and Design of Experiments
2100 01.06.2000 Schindler, Werner Optimized timing attacks against public key algorithms
2099 01.06.2000 Wille, Rudolf Begriffliche Wissensverarbeitung: Theorie und Praxis
2098 01.06.2000 Wille, Rudolf Contextual Logic Summary
2097 01.05.2000 Chelminski, Krzysztof Perfect Plasticity as a Zero Relaxation Limit of Plasticity with Isotropic Hardening
2096 01.05.2000 Hofmann, Karl H.
Morris, Sidney A.
A Structure Theorem on Compact Groups
2095 01.05.2000 Hofmann, Karl Heinrich Arc components in locally compact groups are Borel sets
2094 01.05.2000 Hofmann, Karl H.
Morris, Sidney A.
Transitive actions of compact groups and topological dimension
2093 01.05.2000 Wille, Rudolf Applications of Lattices: Formal Concept Analysis
2092 13.01.2001 Hereth, Joachim
Stumme, Gerd
Wille, Rudolf
Wille, Uta
Conceptual Knowledge Discovery and Data Analysis In this paper, we discuss Conceptual Knowledge Discovery in Databases (CKDD) in its connection with Data Analysis. Our approach is based on Formal Concept Analysis, a mathematical theory which has been developed and proven useful during the last 20 years. Formal Concept Analysis has led to a theory of conceptual information systems which has been applied by using the management system TOSCANA in a wide range of domains. In this paper, we use such an application in database marketing to demonstrate how methods and procedures of CKDD can be applied in Data Analysis. In particular, we show the interplay and integration of data mining and data analysis techniques based on Formal Concept Analysis. The main concern of this paper is to explain how the transition from data to knowledge can be supported by a TOSCANA system. To clarify the transition steps we discuss their correspondence to the five levels of knowledge representation established by R. Brachman and to the steps of empirically grounded theory building proposed by A. Strauss and J. Corbin.
2091 31.05.2000 Maier, Peter On a Special Class of Frobenius Groups admitting Planar Partitions MSC: 22E99; 51A15; 51A40
2090 01.05.2000 Eklund, Peter
Groh, Bernd
Stumme, Gerd
Wille, Rudolf
A Contexual-Logic Extension of TOSCANA
2089 01.05.2000 Wille, Rudolf Boolean Concept Logic
2088 01.05.2000 Cole, Richard
Stumme, Gerd
CEM--A Conceptual Email Manager
2087 01.05.2000 Pollandt, Silke
Wille, Rudolf
On the Contextual Logic of Ordinal Data
2086 01.05.2000 Herrmann, Christian
Luksch, Peter
Skorsky, Martin
Wille, Rudolf
Algebras of Semiconcepts and Double Boolean Algebras
2085 01.05.2000 Glöckner, Helge
Willis, George A.
Uniscalar p-adic Lie Groups
2084 26.10.2000 Neeb, Karl-Hermann Central extensions of infinite-dimensional Lie algebras MSC: 22E65; 58B25; 58B05
The purpose of this paper is to describe the structure of the abelian group of central extensions of an infinite-dimensional Lie group in the sense of Milnor. In the Lie theoretic context, the central extensions of the Lie group $G$ by the abelian group $Z$ are those which are principal bundles. Their equivalence classes are parametrized by the abelian group $\Ext_{\rm Lie}(G,Z)$ whose structure we determine in terms of an exact sequence containing in particular the continuous Lie algebra cohomology group $H^2_c(\g,\z)$ which classifies the central extensions of the topological Lie algebra $\g$ by the abelian Lie algebra $\z$ for which there exists a continuous linear section $\g \to \hat\g$. The central piece of information are the integrability conditions for a central Lie algebra extension to integrate to a group extension in terms of objects related to the first and second homotopy groups of $G$.
2083 01.04.2000 Lengnink, Katja
Prediger, Susanne
Mathematisches Denken in der Linearen Algebra
2082 01.04.2000 Neeb, Karl-Hermann Compressions of Infinite-Dimensional Bounded Symmetric Domains
2081 01.04.2000 Rabinovich, Vladimir S.
Roch, Steffen
Silbermann, Bernd
Band-dominated operators with operator-valued coefficients, their Fredholm properties and finite sections
2080 01.03.2000 Neff, Patrizio On Korn's First Inequality with Nonconstant Coefficients
2079 01.03.2000 Hinder, Rainer
Meister, Erhard
Nazarov, Serguei
Asymptotics of Solutions to Joukovskii-Kutta- Type Problems at Infinity
2078 31.05.2000 Maier, Peter On Algebras in which every Vector Subspace is a Subalgebra MSC: 17A99; 17B99; 51A40
In this note we classify all those algebras over fields of characteristic different from 2 in which every vector subspace is a subalgebra.
2077 01.03.2000 Pickl, Stefan Convex Games and Feasible Sets in Control Theory
2076 01.02.2000 Zhevandrov, Peter
Merzon, Anatoli
On the Neumann problem for the Helmholtz equation in a plane angle
2075 01.02.2000 Ebenfeld, Stefan Systems of Nonlinear Evolution Equations of Mixed Type and Applications--Part 2: Local Existence, Uniqueness and Regularity of Solutions
2074 01.02.2000 Ebenfeld, Stefan Systems of Nonlinear Evolution Equation of Mixed Type and Applications--Part1: A-priori Estimates for Linear Systems
2073 01.02.2000 Becker, Tim Features of Interaction between Formal Concept Analysis and Algebraic Geometry
2072 01.02.2000 Farwig, Reinhard
Novotný, Antonin
Pokorný, Milan
The Fundamental Solution of a Modified Oseen Problem
2071 01.02.2000 Becker, Tim Polynomial Embeddings and Representations of Data Contexts
2070 01.02.2000 Becker, Klaus
Stumme, Gerd
Wille, Rudolf
Wille, Uta
Zickwolff, Monika
Conceptual Information Systems Discussed through an IT-Security Tool
2069 01.01.2000 Neeb, Karl-Hermann Invariant bilinear forms for reflection groups
2068 01.01.2000 Wille, Rudolf
Zickwolff, Monika
Grundlagen einer Triadischen Begriffsanalyse
2067 26.10.2000 Neeb, Karl-Hermann Small weight modules of locally finite almost reductive Lie algebras MSC: 17B65; 17B10
Let $\l$ be a Lie algebra with a root decomposition and with semisimple commutator algebra. We assume that $\l$ has a $3$-grading compatible with the root decomposition. In this note we analyze the structure of the $2$-graded weight modules of a $3$-graded Lie algebra $\l$. The classification results for such modules play a key role in the characterization of the locally finite split Lie algebras with faithful unitary highest weight modules because they arise in the description of such Lie algebras as semidirect sums of almost reductive Lie algebras with generalized Heisenberg algebras.
2066 01.01.2000 Glöckner, Helge
Neeb, Karl-Hermann
Minimally Almost Periodic Abelian Groups and Commutative $W^*$-Algebras
2065 01.01.2000 Neeb, Andreas
Scheffold, Egon
Über periphere Eigenwerte und Eigenvektoren bei gewissen regulären Operatoren
2064 01.01.2000 Rabinovich, Vladimir S.
Roch, Steffen
Silbermann, Bernd
Algebras of approximation sequences: Finite sections of band-dominated operators
2063 01.01.2000 Burmeister, Peter
Holzer, Richard
On the treatment of incomplete knowledge in Formal Concept Analysis
Nummer Datum Autor Titel Abstract/MSC
2062 01.12.1999 Chelminski, Krzysztof From the Minty--Browder Method to the Theory of Viscosity Solutions
2061 25.12.1999 Bruhn, G.W.
Gläubig, E.S.I.
Der Entropie-Motor der Entropy Systems Inc., Ohio, ein Flop? MSC: 76, 80
A new invention, the so called Entropy Engine, is discussed from thermodynamical and mathematical point of view. It is shown that the engine will never convert atmospheric heat to power, as its inventor promises.
2060 01.12.1999 Fröhlich, Andreas The Helmholtz decomposition of weighted ${ \bf L^q}$--spaces for Muckenhoupt weights
2059 01.12.1999 Chelminski, Krzysztof
Gwiazda, Piotr
Nunhomogeneous Initial--Boundary Value Problems for Coercive and Self-Controlling Models of Monotone Type
2058 06.12.1999 Franzke, Martin Strong Solutions of the Navier-Stokes Equations in Aperture Domains MSC: 35Q30
We consider the nonstationary Navier-Stokes equations in a 3-dimensional aperture domain consisting of two halfspaces separated by a wall, but connected by a hole in this wall. In this special domain one has to impose an auxiliary condition to single out a unique solution. This can be done by prescribing either the flux through the hole or the pressure drop between the two halfspaces. We construct suitable Stokes operators for both of the auxiliary conditions and show that they generate holomorphic semigroups. Then we prove the existence and uniqueness of solutions as well as a maximal regularity estimate for the Stokes equations subject to one of the auxiliary conditions. For the corresponding Navier-Stokes equations we prove existence and uniqueness of local in time solutions.
2057 01.11.1999 Prediger, Susanne Mathematische Logik in der Wissensverarbeitung. Historisch-philosophische Gründe für eine Kontextuelle Logik
2056 01.11.1999 Lengnink, Katja
Prediger, Susanne
Lebendiges Mathematiklernen: Der Blick der Themenzentrierten Interaktion auf die Mathematikdidaktik
2055 27.10.2000 Neeb, Karl-Hermann A Cartan-Hadamard Theorem for Banach-Finsler Manifolds MSC: 58B20; 53C35
22E65; 53C21; 53C60
In this paper we study Banach--Finsler manifolds endowed with a spray which have seminegative curvature in the sense that the corresponding exponential function has a surjective expansive differential in every point. In this context we generalize the classical theorem of Cartan--Hadamard, saying that the exponential function is a covering map. We apply this to symmetric spaces and thus obtain criteria for Banach--Lie groups with an involution to have a polar decomposition. Typical examples of symmetric Finsler manifolds with seminegative curvature are bounded symmetric domains and symmetric cones endowed with their natural Finsler structure which in general is not Riemannian.
2054 01.10.1999 Seibert, Thilo
Lehn, Jürgen
Schwan, Stephanie
Kollmann, Franz-Gustav
Identification of Material Parameters for Inelastic Constitutive Models: Stochastic Simulations for the Analysis of Deviations
2053 01.08.1999 Laugwitz, Detlef Curt Schmieden's approach to infinitesimals--an eye-opener to the historiography of analysis
2052 01.08.1999 Roch, Steffen Algebras of approximation sequences: Fractality
2051 25.05.1999 Alber, Hans-Dieter Evolving microstructure and homogenization MSC: 35Q72; 74N15; 74N20; 74Q15; 74D10
In this article we formulate a mathematical model for the temporally evolving microstructure generated by phase changes and study the homogenization of this model. The investigations are partially formal, since we do not prove existence or convergence of solutions of the microstructure model to solutions of the homogenized problem. To model the microstructure, the sharp interface approach is used. The evolution of the interface is governed by an everywhere defined distribution partial differential equation for the characteristic function of one of the phases. This avoids the disadvantage commonly associated with this approach of an evolution equation only defined on the interface. To derive the homogenized problem, a family of solutions of the microstructure problem depending on the fast variable is introduced. The homogenized problem obtained contains a history functional, which is defined by the solution of a initial-boundary value problem in the representative volume element. In the special case of a temporally fixed microstructure the homogenized problem is reduced to an evolution equation to a monotone operator.
2050 01.07.1999 Scheffold, Egon Über Singularität positiver Elemente in Banachverbandsalgebren
2049 01.07.1999 Scheffold, Egon Über positive Resolventenwerte positiver Operatoren
2048 01.07.1999 Roch, Steffen Algebras of Approximation Sequences: Fredholmness
2047 01.07.1999 Fried, Roland Recursive Linear Models for Investigating Humusdisintegration
2046 01.06.1999 Hofmann, Heinrich A history of topological and analytical semigroups
2045 01.06.1999 Bruhn, Gerhard Integral Theorems for Schwartz Distributions on Lie Groups
2044 01.06.1999 Balean, Robin Granular avalanche flow down a smoothly varying slope: the existence of entropy solutions
2043 01.06.1999 Stumme, Gerd Conceptual Knowledge Discovery with Frequent Concept Lattices
2042 01.06.1999 Prediger, Susanne
Stumme, Gerd
Theory-driven logical Scaling: Conceptual Knowldge Systems meet Description Logic
2041 01.06.1999 Ganter, Bernhard
Wille, Rudolf
Contextual Attribute Logic
2040 01.06.1999 Werner, Krabs
Pickl, Stefan
Controllability of a time-discrete dynamical system with the aid of the solution of an approximation problem
2039 01.06.1999 Fried, Roland Coupled Linear Models for Repeated Measurements Considering Missing Data
2038 01.05.1999 Eichhorn, Jürgen
Fried, Roland
Paar, Uwe
Exploratorial Analysis and a Stochastic Model for Humusdisintegration
2037 01.05.1999 Scheffold, Egon Hermite-Spline-Interpolation für Funktionen von zwei Variablen
2036 01.05.1999 Eschenfelder, Dieter
Kollewe, Wolfgang
Skorsky, Martin
Wille, Rudolf
Ein Erkundungssystem zum Baurecht: Methoden der Entwicklung eines TOSCANA--Systems
2035 01.01.1999 Scheffold, Egon Pythagoreische Tripel von Polygonalzahlen
2034 01.04.1999 Mineau, Guy
Stumme, Gerd
Wille, Rudolf
Conceptual Structures Represented by Conceptual Graphs and Formal Concept Analysis
2033 01.04.1999 Prediger, Susanne
Wille, Rudolf
The Lattice of Concept Graphs of a Relationally Scaled Context The aim of this paper is to contribute to Data Analysis by clarifying how concept graphs may be derived from data tables. First it is shown how, by the method of relational scaling, a many-valued data context can be transformed into a power context family. Then it is proved that the concept graphs of a power context family form a lattice which can be described as a subdirect product of specific intervals of the concept lattices of the power context family (each extended by a new top-element). How this may become practical is demonstrated using a data table about the domestic flights in Austria. Finally, the lattice of syntactic concept graphs over an alphabet of object, concept, and relation names is determined and related to the lattices of concept graphs of the power context families which are semantic models of the given contextual syntax.
2032 01.03.1999 Kindler, Jürgen Klee's intersection theorem for separated paved spaces
2031 01.02.1999 Rottbrand, Klaus
Weddigen, Christian
Closed--form Representations of the Laplace Transforms of Bessel Functions ${\bf J_{2n}(a \sqrt{t^2+2bt})}$
2030 01.02.1999 Zahn, Peter A Normative Foundation of Classical Reasoning
2029 01.02.1999 Laugwitz, Detlef Bernhard Riemann--ein Schüler von Gauß?
2028 01.02.1999 Neeb, Karl-Hermann
Stumme, Nina
The Classification of Locally Finite Split Simple Lie Algebras
2027 01.02.1999 Moskowitz, Martin
Wüstner, Michael
Contributions to real exponential Lie groups
2026 01.02.1999 Wüstner, Michael Decomposition of a Lie group with respect to a maximal compactly embedded subgroup
2025 01.02.1999 Glöckner, Helge Direct Limit Lie Groups and Manifolds
2024 01.02.1999 Blunck, Andrea Projective Groups Over Rings
2023 01.01.1999 Ebenfeld, Stefan A Comparison of the Plate Theories in the Sense of Kirchhoff--Love and Reissner--Mindlin MSC: 73C02; 73K10; 73K15
2022 01.01.1999 Leischner, Lutz P. Additive Similarity Measures
2021 01.01.1999 Stumme, Gerd Dual Retrieval in Conceptual Information Systems
2020 01.01.1999 Stumme, Gerd Exploring Conceptual Similarities of Objects for Analyzing Inconsistencies in Relational Databases
2019 01.01.1999 Stumme, Nina The Structure of Locally Finite Split Lie Algebras
2018 01.01.1999 Janowitz, Mel F.
Wille, Rudolf
Classification of Ordinal Cluster Methods
2017 01.01.1999 Günther, Michael
Rentrop, Peter
PDAE-Netzwerkmodelle in der elektrischen Schaltungssimulation
2016 01.01.1999 Schulz, Martin Control volumes suited for particle tracing
Nummer Datum Autor Titel Abstract/MSC
2015 31.12.1998 Ebenfeld,Stefan $L^2$--Regularity Theory of Linear Strongly Elliptic Dirichlet Systems of Order 2m with Minimal Regularity in the Coefficients MSC: 35B45; 35B65
2014 01.12.1998 Burmeister, Peter
Maczynski, Maciej
Quasi-rings and congruences in the theory of orthomodular algebras
2013 01.12.1998 Wagner, Yvonne Modelling and Numerical Simulation of a Crosscurrent Heat Exchanger
2012 01.12.1998 Günther, Michael
Wagner, Yvonne
Index Concepts for Linear Mixed Systems of Differential-Algebraic and Hyperbolic-Type Equations
2011 01.12.1998 Rentrop, Peter
Hilden, Michael
Steinebach, Gerd
Wissenschaftliches Rechnen
2010 01.01.1998 Burmeister, Peter Subdirect representations by epimorphisms in quasivarieties of partial algebras
2009 01.11.1998 Betsch, Gerhard
Hofmann, Karl Heinrich
Hellmuth Kneser: Persönlichkeit, Werk und Wirkung
2008 01.11.1998 Laugwitz, Detlef Debates about infinity in mathematics around 1890: The Cantor-Veronese controversy, its origins and its coutcome; Part I: The origins
2007 01.11.1998 Chelminski, Krzysztof
Naniewicz, Zdzislaw
Part I: On Monotone Plastic Constitutive Equations with Polynomial Growth Condition. Part II: Coercive Limits for Constitutive Equations of Monotone-Gradient Type
2006 01.11.1998 Wüstner, Michael Splittable Lie groups and Lie algebras
2005 01.08.1998 Wille, Rudolf Bildung und Mathematik
2004 01.08.1998 Günther, Michael
Hoschek, Markus
ROW-type Integration Methods for Circuit Simulation Packages
2003 01.08.1998 Blunck, Andrea Reguli and Chains over Skew Fields
2002 01.08.1998 Neeb, Karl-Hermann Integrable Roots in Split Graded Lie Algebras
2001 01.08.1998 Meister, Erhard
Passow, Alexander
Rottbrand, Klaus
New Results on Wave Diffraction by Canonical Obstacles
2000 01.08.1998 Puhlmann, Hermann Kryptographie verstehen--Ein schülergerechter Zugang zum RSA-Verfahren
1999 01.07.1998 Meister, Erhard
Passow, Alexander
Scattering of Acoustical and Electromagnetic Waves by some Canonical Obstacles {\em A. Sommerfeld} published in 1896 his habilitation thesis studying the diffraction of plane time--harmonic acoustical waves by a half--plane or a wedge. He used series expansions and reformulation by integrals. These {\em Sommerfeld integrals} where systematically used by Russian authors. Their approach is called the {\em Maliushinets method}. Western authors use preferably the {\em Wiener--Hopf method}, based on the Fourier transforms and {\em symbol factorization} of the related boundary integral equations. Many new results, including electromagnetic and elastodynamic waves with different kind of boundary conditions, different media, plane surfaces, and aperiodic initial boundary conditions, using generalized eigenfunction expansions, have been achieved during the last decade. Still a lot of open problems exist. The paper reports on more recent results obtained together with coworkers.
1998 01.07.1998 Wille, Rudolf Conceptual Landscapes of Knowledge: A Pragmatic Paradigm for Knowledge Processing
1997 01.07.1998 Stumme, Gerd Acquiring Expert Knowledge for the Design of Conceptual Information Systems
1996 01.07.1998 Stumme, Gerd Conceptual Information Systems and Conceptual On-Line Analytical Processing
1995 01.07.1998 Felkel, Rolf On a bound constrained optimization technique using second order information
1994 01.07.1998 Gerstberger, Robert
Rentrop, Peter
Hardware-Oriented Numerical Algorithms
1993 01.07.1998 Stumme, Gerd
Wille, Rudolf
Wille, Uta
Conceptual Knowledge Discovery in Databases Using Formal Concept Analysis Methods
1992 01.07.1998 Bruhn, Gerhard The Riesz Representation Theorem between classical Measure Theory and the Bourbaki Measure Theory
1991 01.01.1998 Günther, Michael
Hoschek, Markus
Partitionierung Strategies in Circuit Simulation
1990 01.06.1998 Arnold, Martin
Simeon, Bernd
The simulation of pantograph and catenary: a PDAE approach MSC: 65M99; 65L05
Recently, the coupled dynamical simulation of pantograph and catenary in high speed trains has found much interest. The equations of motion form a partial differential-algebraic equation (PDAE) that combines a partial differential equation (PDE) for the catenary and a differential-algebraic equation (DAE) for the pantograph. In the present paper we discuss the relation of this PDAE model to current work on the analysis of PDAE's and formulate a benchmark problem to stimulate further research on this topic. The benchmark problem is solved numerically using a semi-discretization in space (by finite elements or finite differences). For time discretization, typical DAE techniques are applied (index reduction, projection steps, handling of systems with varying structure).
1989 01.06.1998 Krötz, Bernhard
Neeb, Karl-Hermann
Spherical Functions on Mixed Symmetric Spaces
1988 01.06.1998 Scherf, Oliver
Simeon, Bernd
Viscoplastic Deformation from the DAE Perspective – a Benchmark Problem MSC: 65M99; 65L05
Viscoplastic deformation is characterized by a combined system of balance and evolution equations. The application of the Finite Element Method results in a Differential-Algebraic Equation (DAE) in time. The paper summarizes the most important points of the mathematical model and presents a benchmark problem for numerical comparisons. As computational example, the BDF-2 method with stepsize control is applied.
1987 01.06.1998 Rheinboldt, Werner
Simeon, Bernd
On Computing Smooth Solutions of DAE's for Elastic Multibody Systems MSC: 65L05; 65M99
Multibody systems are considered which involve combinations of rigid and elastic bodies. Discretizations of the PDEs, describing the elastic members, lead to a semidiscrete system of ODEs or DAEs. Asymptotic methods are introduced which provide a theoretical basis of various known engineering results for the ODE case. These results are then extended to the DAE case by means of suitable local ODE representations. The recently developed MANPAK algorithms for computations on implicitly defined manifolds form the basic tools for a computational method which provides consistent approximate solutions of the semidiscrete DAE that satisfy all constraints and are close to the smooth motion and an average solution. Several numerical examples indicate the effectiveness of this asymptotic method for elastic multibody systems.
1986 01.06.1998 Rentrop, Peter
Scherf, Oliver
Simeon, Bernd
Mechanical Multibody Systems with Deformable Components MSC: 65M99; 65L05

The multibody system approach provides enhanced models of vehicles, robots, and air- and spacecrafts. Mixed systems consisting of both rigid and deformable bodies are aimed at growing demands for refined simulation. A basic modeling framework for this class of mechanical systems is presented which covers also inelastic material behavior. Moreover, the Differential-Algebraic Equations (DAEs) obtained from semidiscretization in space are classified and the application of DAE solvers is discussed. Two examples illustrate the simulation tasks and show the state-of-the-art in this field of scientific computing.
1985 01.06.1998 Groh, Bernd
Strahringer, Selma
Wille, Rudolf
TOSCANA-Systems Based on Thesauri
1984 01.06.1998 Rottbrand, Klaus Exact Solution for Time-dependent Diffraction of Plane Waves by Semi-infinite Soft/Hard Wedges and Half-Plane
1983 01.05.1998 Wille, Rudolf Triadic Concept Graphs
1982 01.05.1998 Biedermann, Klaus An Equational Theory for Trilattices
1981 01.05.1998 Biedermann, Klaus Powerset Trilattices
1980 01.05.1998 Mäurer, Helmut Die Quaternionenschiefkörper
1979 01.05.1998 Heger, Michael
Lengnink, Katja
Prediger, Susanne
TZI macht Schule in der Hochschule. Ein Beitrag zur Hochschul- und Mathematikdidaktik
1978 01.05.1998 Blunck, Andrea Regular Spreads and Chain Geometries
1977 01.05.1998 Prediger, Susanne Simple Concept Graphs: A Logic Approach Conceptual Graphs and Formal Concept Analysis are combined by developing a logical theory for concept graphs of relational contexts. Therefore, concept graphs are introduced as syntactical constructs, and their semantics is defined based on relational contexts. For this contextual logic, a sound and complete system of inference rules is presented and a standard graph is introduced that entails all concept graphs being valid in a given relational context. A possible use for conceptual knowledge representation and processing is suggested.
1976 01.04.1998 Witzel, Jürgen A numerical study of iterative methods for the solution of convection-diffusion problems
1975 01.04.1998 Puhlmann, Hermann Funktionales Programmieren: Eine neue Verbindung von Informatikunterricht und Mathematik
1974 01.04.1998 Krasauskas, Rimvydas
Mäurer, Christoph
Studying cyclides with Laguerre geometry
1973 01.04.1998 Farwig, Reinhard Die (un-)berechenbare Angst des Mathematikers vor dem Fliegen
1972 01.04.1998 Mauthner, Susanne Step Size Control in the Numerical Solution of Stochastic Differential Equations
1971 01.04.1998 Schein, Oliver
Denk, Georg
Numerical solution of stochastic differential-algebraic equations with applications to transient noise simulation of microelectronic circuits
1970 01.04.1998 Kindler, Jürgen Abstract Separation and Connectedness
1969 01.04.1998 Neeb, Karl-Hermann On the complex geometry of invariant domains in complexified symmetric spaces
1968 01.04.1998 Neeb, Karl-Hermann Representation Theory and Convexity
1967 01.03.1998 Jäpel, Irg A Global Existence Theorem for a Nonlinear System related to Hypoplasticity
1966 01.03.1998 Herrmann, Christian
Roddy, Michael S.
Representation and equational theory of orthocomplemented modular lattices
1965 01.03.1998 Mäurer, Helmut Involutorische Automorphismen ebener konvexer Mengen
1964 01.02.1998 Günther, Michael
Hoschek, Markus
Rentrop, Peter
Differential-Algebraic Equations in Electric Circuit Simulation
1963 01.02.1998 Jäpel, Irg Local Existence for a Nonlinear System related to Hypoplasticity
1962 01.02.1998 Prediger,Susanne Begriffsgraphen: Syntax und Semantik
1961 01.01.1998 Heil, Erhard A four-vertex theorem for space curves MSC: 53A04
We prove a vertex theorem for space curves which need not lie on the boundaries of their convex hulls.
1960 01.01.1998 Felkel, Rolf Die Penalty-Methode von Pantoja und Mayne
1959 01.01.1998 Heil, Erhard Rotational hypersurfaces of constant Gauss-Kronecker curvature
Nummer Datum Autor Titel MSC
1958 01.12.1997 Biedermann, Klaus Completion of Triordered Sets and Trilattices
1957 01.12.1997 Gorbunov, Viktor
Kravchenko, Alexandr
Antivarieties and colour-families of graphs
1956 01.12.1997 Sklyar,Grigory M.
Velkovsky, Igor L.
The Markov Trigonometric Moment Problem With Periodic Gaps
1955 01.01.1997 Heil, Erhard Drehhyperflächen mit konstanten Krümmungsradienfunktionen
1954 01.11.1997 Gerstberger, Robert
Rentrop, Peter
Solving Ordinary Differential Equations with Partial Recurrent Network
1953 01.11.1997 Ershov, Yuri L. On d-Spaces
1952 01.11.1997 Alber, Hans-Dieter Workshop «Partielle Differentialgeichungen und ihre Anwendungen in der Theorie granularer und metallischer Strukturen»
1951 01.11.1997 Balean, Robin Existence of entropy solutions to a one-dimensional model for granular avalanches
1950 01.11.1997 Chudej, Kurt
Günther, Michael
A global state space approach for the efficient numerical solution of state-constrained trajectory optimization problems
1949 01.11.1997 Chelminski, Krzysztof
Gwiazda, Piotr
The model of Bodner-Partom and the Method of Monotone Operators. Teil I; On Self-Controlling Models in the Theory of Inelastic Material Behavior of Metals. Teil II
1948 01.10.1997 Hietel, Dietmar
Witzel, Jürgen
A new finite volume approach for the solution of convection-diffusion problems MSC: 65M20; 65M55; 76D30
1947 01.10.1997 Kirchner, Eckhard
Simeon, Bernd
A higher order time integration method for viscoplasticity
1946 01.10.1997 Simeon, Bernd Order reduction of stiff solvers at elastic multibody systems
1945 01.09.1997 Mukhopadhyay, Parimal
Schwabe, Rainer
On the Performance of the Ordinary Least Squares Method under an Error Component Model MSC: 62J05
1944 01.09.1997 Wagner, Yvonne A Moving Grid Algorithm for a Heat Exchanger with Phase Changes
1943 01.09.1997 Kindler, Jürgen Domokos' minimax theorem for usc-lsc functions
1942 01.08.1997 Bruhn, Gerhard Regular measures, regular linear functionals and admissible multipliers
1941 01.08.1997 Schwabe, Rainer Optimal Designs for Hierarchical Interaction Structures MSC: 62K05
1940 01.07.1997 Feistauer, Miloslav Finite Volume and Finite Element Methods for the Euler and Navier-Stokes Equations
1939 01.07.1997 Merzon, Anatol E.
Zhevandrov, P.N.
High-Frequency Asymptotics of Edge Waves on a Beach of Nonconstant Slope
1938 01.07.1997 Chelminski, Krzysztof Coercive limits for a subclass of monotone constitutive equations in the theory of inelastic material behaviour of metals
1937 01.07.1997 Hofmann, Karl Heinrich Das Riemann-Helmholtz-Liesche Raumproblem
1936 01.07.1997 Hartung, Gerd
Kamara, Morike
Sácárea, Christian
A Topological Representation of Polyrity Lattices
1935 01.07.1997 Sácárea, Christian An Extended Duality For Polarity Lattices
1934 01.07.1997 Günther, Michael
Ostermann, Alexander
Numerical treatment of ordinary and algebra-differential equations
1933 01.07.1997 Benda, Norbert
Schwabe, Rainer
Designing Experiments for Adaptively Fitted Models MSC: 62K05
1932 01.07.1997 Günther, Michael
Feldmann, Uwe
CAD based electric circuit modeling in industry. Part II: Impact of circuit configurations and parameters
1931 01.07.1997 Günther, Michael
Feldmann, Uwe
CAD based electric circuit modeling in industry. Part I: Mathematical structure and index of network equations
1930 01.07.1997 Rottbrand, Klaus Initial Dirichlet problem for half-plane diffraction: Global formulae for its generalized eigenfunctions and explicit solution by the Cagniard-de Hoop method
1929 01.06.1997 Strahringer, Selma
Wille, Rudolf
Conceptual Knowledge Processing with Ordinal Scales
1928 01.06.1997 Kindler, Jürgen Two Functions Topological Minimax Theorems
1927 01.06.1997 Strandt, Sibylle Quadratic Congruential Generator With Odd Composite Modulus
1926 01.06.1997 Vogt, Frank Quadratic Congruential Generator With Odd Composite Modulus
1925 01.06.1997 Stumme, Gerd
Wolff, Karl Erich
Computing in Conceptual Data Systems with Relational Structures
1924 01.06.1997 Koval, Valery
Schwabe, Rainer
Limit Theorems for Solutions of Stochastic Difference Equations in Banach Spaces with Applications
1923 01.06.1997 Prediger, Susanne Symbolic Objects in Formal Concept Analysis
1922 01.06.1997 Adaricheva, Kira
Gorbunov, Viktor
Dziobiak, Wislaw
Algebraic atomistic lattices of quasivarieties
1921 01.06.1997 Hoschek, Markus
Rentrop, Peter
Wagner, Yvonne
Network Approach and Differential-Algebraic Systems in Technical Applications
1920 01.06.1997 Wagner, Yvonne Modelling and Numerical Simulation of a Heat Exchanger
1919 01.06.1997 Bruhn, Gerhard
Budzick, Günther
The Weak Gauss Divergence Theorem
1918 01.05.1997 Stumme, Gerd Free Distributive Completions of Partial Complete Lattices
1917 01.05.1997 Hsiao, George C.
Kleinman, Ralph E.
Roach, Gary F.
Weak Solutions of Fluid-Splid Interaction Problems
1916 01.05.1997 Simeon, Bernd DAEs and PDEs in Elastic Multibody Systems
1915 01.05.1997 Kindler, Jürgen Intersection Theorems, Minimal Theorems and Abstract Connectedness
1914 01.05.1997 Prediger, Susanne Terminologische Merkmalslogik in der Formalen Begriffsanalyse
1913 01.05.1997 Hsiao, George C. On the Newton-imbedding Integral Equation Method for some Nonlinear Problems
1912 01.05.1997 Zahn, Peter Programs to compute functions on proper topological spaces and moduli of continuity
1911 01.04.1997 Farwig, Reinhard The Stationary Navier-Stokes Equations in a 3D-Exterior Domain
1910 01.04.1997 Chelminski, Krzysztof
Gwiazda, Piotr
On the Model of Bodner-Partom with Nonhomogeneous Boundary Data
1909 01.04.1997 Biedermann, Klaus Triadic Galois Connections
1908 01.04.1997 Biedermann, Klaus How Triadic Diagrams Represent Conceptual Structures
1907 01.04.1997 Prediger, Susanne Logical Scaling in Formal Concept Analysis
1906 01.04.1997 Mäurer, Helmut
Stroppel, Markus
Groups that are almost homogeneous
1905 01.04.1997 Stumme, Gerd Concept Exploration--A Tool for Creating and Exploring Conceptual Hierarchies
1904 01.04.1997 Ganter, Bernhard
Wille, Rudolf
Applied Lattice Theory: Formal Concept Analysis
1903 01.04.1997 Wille, Rudolf Conceptual Graphs and Formal Concep Analysis
1902 01.03.1997 Wille, Rudolf Fächerintegrierte Lehre im universitären Bereich
1901 01.03.1997 Rock, Tammo
Wille, Rudolf
Ein TOSCANA-Erkundungssystem zur Literatursuche
1900 01.03.1997 Wille, Rudolf Verständigungsorientierte Wissenschaft und Didaktik
1899 01.03.1997 Eichenauer-Herrmann, Jürgen
Herrmann, Eva
A survey of quadratic and inversive congruential pseudorandom numbers
1898 01.03.1997 Larcher, Gerhard
Wolf, Gerhard
Eichenauer-Herrmann, Jürgen
On the average discrepancy of successive tuples of pseudo random numbers over parts of the period
1897 01.03.1997 Karasözen, Bülent Reflexive Methods for Dynamical Systems with Conserved Quantities
1896 01.03.1997 Getrost, Gabriele
Würkner, Achim
MATHEMATIK ERZÄHLEN--Eine Konzeption von fachübergreifendem Unterricht von Mathematik und Deutsch
1895 01.03.1997 Groß, Christian
Strempel, Torsten-K.
Diagrams and Embeddings
1894 01.03.1997 Groß, Christian
Strempel, Torsten-K.
On symmetrical triangulations of high genus
1893 01.02.1997 Breckner, Brigitte The Bohr-compactification of cones of almost abelian Lie groups
1892 01.02.1997 Mittenhuber, Dirk Dubins' problem in the hyperbolic plane using the open disc model
1891 01.02.1997 Hankel, Marlis
Karasözen, Bülent
Rentrop, Peter
Schmitt, Udo
A Molecular Dynamics Model for Symplectic Integrators
1890 01.02.1997 Günther, Michael Modelling Transmission Lines Effects in Integrated Circuits by a Mixed System of DAEs and PDEs
1889 01.02.1997 Gerstberger, Robert Numerical Studies with Kohonen Nets
1888 01.02.1997 Rottbrand, Klaus Time-dependent Plane Wave Diffraction by a Half-Plane: Explicit Solution for Rawlins' Mixed Initial Boundary Value Problem
1887 01.02.1997 Spellucci, Peter A modified rank one update which converges globally and Q-superlinearly
1886 01.01.1997 Neumeyer, Thomas
Rentrop, Peter
The DAE-Aspect of the Charge Cycle in a Combustion Engine
1885 01.01.1997 Meister, Erhard Funktionentheorie und Funktionalanalysis
1884 01.01.1997 Pickl, Stefan
Weber, Gerhard-W.
Generalized Semi-Infinite Optimization: An Iterative Approach Based On Approximative Linear Programming Problems
1883 01.01.1997 Laugwitz, Detlef Mathematische Modelle zum Kontinuum und zur Kontinuität
Nummer Datum Autor Titel MSC
1882 01.12.1996 Gwiazda, Piotr On Singular Limits to the Bodner-Partom Model
1881 01.12.1996 Herrmann, Eva
Wegenkittl, Stefan
Visualization of Empirical Test Results for Pseudorandom Number Generators
1880 01.11.1996 Schwabe, Rainer Optimal Symmetric Designs for a One-way Layout with Covariates
1879 01.11.1996 Jüttler, Bert Surface fitting using convex tensor-product splines
1878 01.10.1996 Wille, Rudolf Introduction to Formal Concept Analysis
1877 01.10.1996 Stokolos, A.M. On the Rate of Almost Everywhere Convergence of Certain Integral Means. Part One: Periodical Case
1876 01.10.1996 Breckner, Brigitte A fixed point theorem for vectoral multivalued set functions
1875 01.10.1996 Horsch, Thomas
Jüttler, Bert
Splines Interpolation for Industrial Robots and its Application
1874 01.10.1996 Langsdorf, Rolf
Skorsky, Martin
Wille, Rudolf
Wolf, Albrecht
An Approach to Automated Drawing of Concept Lattices
1873 01.10.1996 Artmann, Benno Euclids's proposition ELEMENTS I, 16 and its consequences for the genesis of ELEMENTS book I
1872 01.10.1996 Burmeister, Peter
Monserrat, Miquel
Rosselló, Francise
Valiente, Gabriel
Algebraic Transformation of Unary Partial Algebra II: Single-Pushout Approach
1871 01.09.1996 Fritzen, Peter
Wittekindt, Jörg
Numerical Solution of Viscoplastic Constitutive Equations with Internal State Variables
1870 01.09.1996 Werthenbach, Claudia
Herrmann, Eva
A fast and stable updatin algorithm for bivariate nonparametric curve estimation
1869 01.09.1996 Chelminski, Krzysztof Stress $L^\infty$-Estimates and the Uniqueness Problem for the Equations to the Model of Bodner-Partom
1868 01.09.1996 Meister, Erhard Modern Mathematical Methods In Diffraction Theory And Its Applications In Engineering
1867 01.09.1996 Jäpel, Irg Existence theory to the equations in viscoelasticity at finite deformations
1866 01.09.1996 Zahn, Peter Programs to compute functions on metric spaces and moduli of continuity
1865 01.09.1996 Hoehnke, Hans-Jürgen On certain classe of categories and monoids contructed from abstract Mal'cev clones
1864 01.09.1996 Günther, Michael
Hoschek, Markus
Modified ROW methods for electric circuit simulation packages
1863 01.07.1996 Schellhaas, Helmut The Kolmogorov-Smirnov-test for a rectangular distribution with unknown parameters: Computation of the distribution of the test statistic
1862 01.07.1996 Eichenauer-Herrmann, Jürgen
Emmerich, Frank
Larcher, Gerhard
Average Discrepancy, Hyperplanes, and Compound Pseudorandom Numbers
1861 01.07.1996 Eichenauer-Herrmann, Jürgen Improved upper bounds for the discrepancy of pairs of inversive congruential pseudorandom numbers with power of two modulus
1860 01.07.1996 Eichenauer-Herrmann, Jürgen
Niederreiter, Harald
Parallel Streams of Nonlinear Congruential Pseudorandom Numbers
1859 01.07.1996 Eichenauer-Herrmann, Jürgen
Niederreiter, Harald
Inversive congruential pseudorandom numbers: distribution of tripels
1858 01.07.1996 Eichenauer-Herrmann, Jürgen
Niederreiter, Harald
Lower bounds for the discrepancy of triples of inversive congruential pseudorandom numbers with power of two modulus
1857 01.07.1996 Groß, Christian
Strempel, Torsten-Karl
Topologie verallgemeinerter Kegelschnitte
1856 01.07.1996 Ali Mehmeti, Felix
Nicaise, Serge
Nemetskij's operators and global existence of small solution of semilinear evolution equations on nonsmooth domains
1855 01.07.1996 Lehn, Jürgen
Müller-Gronbach, Thomas
Rettig, Stefan
Lorenzkurve und Gini-Koeffizient zur statistischen Beschreibung von Konzentration
1854 01.07.1996 Ali Mehmeti, Felix
Meister, Erhard
Mihalincic, Kreso
Spectral Theory for the Wave Equation in Two Adjacent Wedges
1853 01.07.1996 Laugwitz, Detlef Controversies about numbers and functions
1852 01.07.1996 Ali Mehmeti, Felix
Nicaise, Serge
Banach algebras of functions on nonsmooth domains
1851 01.07.1996 Gerstenberger, Robert
Rentrop, Peter
Feedforward Neural Nets as Discretization Schemes for ODEs and DAEs
1850 01.06.1996 Felkel, Rolf An interior-point method for large-scale QP-Problems
1849 01.06.1996 Vogt, Frank On the Order-Completion of Additive Conjoint Structures
1848 01.06.1996 Rottbrand, Klaus Rawlins Problem for Half-Plane Diffraction: Its Generalized Eigenfunctions with Real Wavenumbers
1847 01.06.1996 Hinder, Rainer
Nazarov, Serguej A.
Asymptotics of the Circulation Around a Three-dimensional Thin Wing
1846 01.06.1996 Hinder, Rainer
Meister, Erhard
Regarding some problems of the Kutta-Joukorskii condition in lifting surface theory
1845 01.06.1996 Laugwitz, Detlef Zur historischen Entwicklung der Infinitesimalmathematik
1844 01.06.1996 Rentrop, Peter
Steinebach, Gerd
A Method of Lines Approach for River Alarm Systems
1843 01.06.1996 Wüstner, Michael On the exponential function of real splittable and real semisimple Lie groups
1842 01.05.1996 Denk, Georg
Günther, Michael
The influence of MOSFET model and network equations on circuit simulation
1841 01.05.1996 Denk, Georg
Günther, Michael
Simeon, Bernd
Numerische Simulation in Chip-Design und Fahrzeugtechnik
1840 01.05.1996 Burmeister, Peter
Wojdylo, Boleslaw
The Meaning of Basic Category Theoretical Notions in Some Categories of Partial Algebras. III
1839 01.05.1996 Meister, Erhard Neuere Entwicklungen in der Angewandten Analysis--Am Beispiel kanonischer Beugungsprobleme
1838 01.05.1996 Wille, Rudolf Conceptual Structures of Multicontexts
1837 01.04.1996 Emmerich, Frank Equidistribution properties of quadratic congruential pseudorandom numbers
1836 01.04.1996 Emmerich, Frank
Müller-Gronbach, Thomas
A law of the iterated logarithm for discrete discrepancies and its applications to pseudorandom vector sequences
1835 01.04.1996 Friedrich, Thomas
Schellhaas, Helmut
Computation of the percentage points and the power for the two sided Kolmogorov-Smirnov one sample test
1834 01.04.1996 Cervesato, Iliano
Pfenning, Frank
A Linear Logical Framework
1833 01.04.1996 Herrmann, Eva On the convolution type kernel regression estimator
1831 01.04.1996 Katchalov, A.P.
Kurylev, Yaroslav V.
Multidimensional Gelfand inverse problem with incomplete boundary spectral data
1830 01.04.1996 Zahn, Peter A Pragmatic Approach to Classical Logic
1829 01.04.1996 Stumme, Gerd The Concept Classification of a Terminology Extended by Conjunction and Disjunction
1828 01.04.1996 Stumme, Gerd Distributive Concept Exploration--A Knowledge Acquisition Tool in Formal Concept Analysis
1827 01.04.1996 Stumme, Gerd Local Scaling in Conceptual Data Systems
1826 01.04.1996 Weber, Gerhard-W. Generalized Semi-Infinite Optimization: On Iteration Procedures and Topological Aspects
1825 01.04.1996 Weber, Gerhard-W. Generalized Semi-Infinite Optimization: On some Foundations
1824 01.03.1996 Dintelmann, Peter Fourier Multipliers between weighted anisotropic function spaces with $p_0 \le l$. Part II: Besov-Triebel spaces
1823 01.03.1996 Dintelmann, Peter Fourier Multipliers between weighted anisotropic function spaces with $p_0 \le l$. Part I: Besov spaces
1822 01.03.1996 Wille, Rudolf Allgemeine Mathematik--Mathematik für die Allgemeinheit
1821 01.03.1996 Bäsler, Christoph Numerik als Hilfsmittel zum besseren Verständnis von Mathematik im Schulunterricht
1820 01.03.1996 Burmeister, Peter
Rossello, Francise
Torrens, Joan
Valiente, Gabriel
Algebraic Transformation of Unary Partial Algebras I: Double-Puschout Approach
1819 01.03.1996 Alberich, Ricardu
Burmeister, Peter
Rosselló, Francise
Valiente, Gabriel
Wojdylo, Boleslaw
A Partial Algebras Approach to Graph Transformation
1818 01.03.1996 Moskowitz, Martin
Wüstner, Michael
Exponentiality of certain real solvable Lie groups
1817 01.03.1996 Potts, Daniel
Steidl, Gabriele
Tasche, Manfred
Fast Algorithms for Discrete Polynomial Transforms
1816 01.03.1996 Gräb, Robert
Günther, Michael
Wever, Utz
Quinghua Zheng
Optimization of Parallel Multilevel-Newton Algorithms on Workstation Clusters
1815 01.03.1996 Spellucci, Peter
Felkel, Rolf
Numerical experiments with an exact penalty function for convex inequality constrained QP-problems
1814 01.02.1996 Grosskopf, Anja Formal Concept Analysis of Verb Paradigms in Linguistics
1813 01.02.1996 Pfenning, Frank The Practice of Logical Framework
1812 01.02.1996 Priss, Uta The Formalization of Word Net by Methods of Relational Concept Analysis
1811 01.02.1996 Müller-Gronbach, Thomas Hyperbolic Cross Designs for Approximation of Random Fields
1810 01.02.1996 Görg, K. A.
Neumeyer, Thomas
Rentrop, Peter
Zur numerischen Simulation des Ladungswechsels im Verbrennungsmotor
1809 01.02.1996 Kindler, Jürgen Topological Minimax Theorems and Approximation
1808 01.02.1996 Laugwitz, Detlef Nonstandard Analysis and the History of Mathematics
1807 01.02.1996 Laugwitz, Detlef On Polygonal Numbers
1806 01.02.1996 Mäurer, Christoph Rational Curves and Surfaces on Dupin Ring Cyclides
1805 01.02.1996 Hietel, Dietmar
Witzel, Jürgen
A multigrid method based on cell orientated discretization for convection-diffusion problems
1804 01.01.1996 Eichenauer-Herrmann, Jürgen Improved upper bounds for the discrepancy of pairs of inversive congruential pseudorandom numbers
1803 01.01.1996 Günther, Michael Simulating digital circuits numerically--a charge-oriented ROW approach
1802 01.01.1996 Stroppel, Markus Homogeneous Locally Compact Groups
1801 01.01.1996 Martensen, Erich Gleichgewichtslösungen in der Magnetostatik
1800 01.01.1996 Eck, Matthias
Hoppe, Hugues
Automatic Reconstruction of B-Spline Surfaces of Arbitrary Topological Type MSC: 41A15; 65D17
1799 01.01.1996 Chigogidze, Alex
Hofmann, Karl H.
Martin, John R.
Compact Groups and Fixed Point Sets
1798 01.01.1996 Neeb, Andreas Positive Reynolds operators and derivations on C(K)