Seminar Nichtlineare Optimierung und Inverse Probleme M. Wolfmayr, Johannes Kepler Universität Linz, Austria:
Multiharmonic finite element analysis of time-periodic parabolic optimal control problems more ...Location Weierstraß-Institut, Mohrenstr. 39, 10117 Berlin, 4. Etage, Weierstraß-Hörsaal (Raum: 406)
Further Informations
Seminar ``Modern Methods in Applied Stochastics and Nonparametric Statistics''
Host
WIAS Berlin
Tuesday, 21.05.2013, 15.15 Uhr (FU Berlin)
Oberseminar Nonlinear Dynamics M. Väth, Freie Universität Berlin:
Darbo's Theorem, essential maps and essential pairs more ...Location Freie Universität Berlin, Arnimallee 3, 14195 Berlin, Hinterhaus, Raum 130
Abstract
Darbo established ub 1955 a fixed point theorem in which the compactness hypothesis of Schauder's fixed point theorem was dramatically relaxed. Essential Maps, introduced by A. Granas and also by M. Furi, M. Martelli, and A. Vignoli, are an extension and homotopic analogue of degree theory. Both ideas were married, historically with very technical proofs, for applications in so-called nonlinear spectral theory. In the talk a stunningly simple combination of the two ideas is presented. This even applies to a new concept of so-called essential pairs which appears to be the natural extension and homotopic analogue of recently developing degree theories for function triples.
Host
WIAS Berlin Freie Universität Berlin
Wednesday, 22.05.2013, 10.00 Uhr (WIAS-ESH)
Forschungsseminar Mathematische Statistik I. Castillo, Université Pierre et Marie Curie, Paris/Frankreich:
Some results on frequentist analysis of Bayesian posterior distributions more ...Location Weierstraß-Institut, Mohrenstr. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Further Informations
Forschungsseminar ``Mathematische Statistik''
Host
WIAS Berlin Humboldt-Universität zu Berlin Universität Potsdam
Thursday, 23.05.2013, 16.15 Uhr (WIAS-ESH)
Forschungsseminar Mathematische Modelle der Photonik Dr. M. Radziunas, WIAS Berlin:
Modeling, simulations and analysis of beam quality improvement in broad area semiconductor devices more ...Location Weierstraß-Institut, Mohrenstr. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Host
Humboldt-Universität zu Berlin WIAS Berlin
Friday, 24.05.2013, 10.30 Uhr (WIAS-ESH)
Seminar Numerische Mathematik Prof. H.-J. Starkloff, Westsächsische Hochschule Zwickau:
On some questions related to generalized polynomial chaos expansions more ...Location Weierstraß-Institut, Mohrenstr. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Abstract
Generalized polynomial chaos expansions are series expansions of random variables or random functions using orthogonal polynomials in certain basic random variables. They are a versatile tool for efficiently working with stochastic quantities. So, recently they are widely used for the investigation of stochastic models, for uncertainty quantification methods or stochastic simulation purposes. In particular, recent approaches for the solution of ordinary or partial differential equations with random parameters often use certain versions of generalized polynomial chaos expansions. In the talk basic definitions and properties of generalized polynomial chaos expansions are presented. Furthermore some problems are considered which are related to convergence properties or algebraic transformations of generalized polynomial chaos expansions. The talk is based on joint work with A. Mugler (BTU Cottbus) and O. Ernst and B. Sprungk (TU Chemnitz).
