[Vortraege] Vortragsankündigungen der komm. Woche (KW 43)

Fri Oct 17 14:00:09 CEST 2008

Sehr geehrte Fakultätsmitglieder,

anbei die Vortragsankündigungen für die nächste Woche, im Anhang finden 
Sie den Text auch als PDF Datei.

Mittwoch, 22. Oktober, 16:00 Uhr, C 209
Antrittsvorlesung im Rahmen des Mathematischen Kolloquiums von
Univ.-Prof. Dr. Adrian Constantin (Fakultät für Mathematik, Universität 
Wien)
„Particle trajectories beneath a Stokes wave“
Abstract: The description of the particle paths within the water as a 
regular wave pattern (a periodic two-dimensional gravity water wave in 
irrotational flow) propagates at constant speed on the water’s free 
surface is a basic problem in hydrodynamics. It was widely believed that 
the particle paths are closed. However, the forward motion of a particle 
is almost never compensated for by its backward motion: some particle 
trajectories are closed orbits but most are looping orbits that drift 
either in the direction of wave propagation or opposite to it, depending 
on the presence of an underlying favorable or adverse current.

Anschließend Buffet im Common Room

(Univ.-Prof. Dr. Harald Rindler)

Dienstag, 21. Oktober, 11:15 Uhr bis 12:45 Uhr, 2A180, UZA 2
Complex Analysis Seminar
Dr. Robert Juhlin (Fakultät für Mathematik, Universität Wien)
„On normal forms for real-analytic hypersurfaces in complex space“
Abstract: I will talk about what we mean with a normal form, and use 
Chern-Moser's normal form for Levi-nondegenerate hypersurfaces, as an 
example. We distinguish between formal normal forms and convergent 
normal forms. I will also discuss some techniques on how convergence for 
a normal form can be obtained.

http://plone.mat.univie.ac.at/research/groups/scv/seminar08?set_language=en

Dienstag, 21. Oktober, 15:00 Uhr, D 103
Arbeitsgemeinschaft Biomathematik
Univ.-Prof. Dr. Christian Schmeiser (Fakultät für Mathematik, 
Universität Wien)
“Modelization of cytoskeleton dynamics”

Dienstag, 21. Oktober, 16 c.t., großer Seminarraum, Boltzmanng. 5/5.Stock
Einladung zur 3. Vorlesung im Rahmen der Schrödinger-Gastprofessur 2008
Eduardo de Rafael (CNRS-Luminy, Marseille)
“Large –Nc QCD and Harmonic Sums”
Donnerstag, 23. Oktober, 14 s.t., großer Seminarraum, Boltzmanng. 5/5.Stock
Einladung zur 4. Vorlesung im Rahmen der Schrödinger-Gastprofessur 2008
Eduardo de Rafael (CNRS-Luminy, Marseille)
“QCD and Phenomenological Applications”

Dienstag, 21. Oktober, 15:15 Uhr bis 16:45 Uhr, TU Wien,  Freihaus, 
grüner Turm (A), 8. Stock, Dissertantenraum, Wiedner Hauptstr. 8-10, 
1040 Wien
Arbeitsgemeinschaft Diskrete Mathematik
Dr. Jörg Lehnert
„Quasi-automorphisms of colored graphs“
Abstract: A quasi-automorphism of a colored graph is a bijection $f$ of 
the set of vertices with the property, that both $f$ and its inverse 
respect all but finitely many colored edges of each color. Thus the set 
of all quasi-automorphisms of a fixed graph forms a subgroup of the 
group of all permutations of the set of vertices. We will discuss the 
groups of quasi-automorphims of Cayley-graphs as well as the group of 
quasi-automorphisms of the rooted binary tree, which turns out out to be 
a very interesting group for several reasons. For instance the 
word-problem of this group is co-context-free and all groups which are 
known to have a co-context-free word-problem embed into this group as a 
subgroup.

Dienstag, 22. Oktober, 13:00 Uhr, D 103
Öffentliche Defensio
Mag. Martin Fuchs
„Uncertainty modeling in higher dimensions: Towards robust design 
optimization“

Donnerstag, 23. Oktober, 15:30 Uhr, 2A310, UZA 2
Geometry Seminar
Dr. Shantanu Dave
„Families of operators on J-holomorphic curves“
Abstract: Given an almost complex manifold M (with a prescribed complex 
vector-bundle structure J on TM the J-holomorphic cureves are maps from 
the Riemann sphere CP1 into M whose derivatives are complex linear and 
hence they satisfy a nonlinear Cauchy-Riemann equation. Under suitable 
assumptions the modulii space of such maps is a manifold. The tangent 
space is described by a family of linear operators(now parametrized by 
the space of solution itself). Such moduli spaces provide very useful 
invariants for symplectic manifolds. The talk shall present the standard 
notions of J-holomorphic curves with slightly operator theoretic 
inclination.

Freitag, 24. Oktober, 12:00 c.t., TU Wien, Institut für Diskrete 
Mathematik und Geometrie,
kleiner Seminarraum 104, Wiedner Hauptstr. 8-10, Turm A, 5. Stock, 1040 Wien
WAS Algebra Seminar
Michael Pinsker
„The reducts of equality“

16. Oktober 2008 bis Donnerstag 26. Februar 2009,
Jeden Donnerstag: 13:00 Uhr bis 15:00 Uhr, ESI Schrödinger Lecture Hall, 
Boltzmanng. 9
ESI Senior Research Fellow Program, fall/winter 2008/09
Prof. Goran Muic (University of Zagreb)
„Selected Topics in the Theory of Automorphic Forms for Reductive Groups“
Abstract: Let G be a reductive algebraic group over Q. Let A be the ring 
of ad' eles of Q. One of the goals of the Langlands program is to 
understand square--integrable automorphic forms which are particularly 
nice functions in L2(G(Q)|G(A)) that contain arithmetic information 
related to the absolute Galois group. According to Langlands, the 
formalism of Eisenstein series is used not only to construct automorphic 
forms but also to construct Lfunctions which appear in a constant term. 
Eisenstein series are meromorphic functions which have complicated 
singularities. We explain how one can use local representation theory to 
study their poles. We explain some applications of the theory of 
Eisenstein series. On the other hand, there are cusp forms which are 
mysterious and there are not so many ways to study them. We explain some 
methods for constructing the cusp forms.

Noch eine allgemeine Information:

Es wird (von Prof. Feichtinger) empfohlen, den Austrian Talk-Server f. 
Mathematik als Bookmark auf der privaten Homepage einzurichten, und in 
der laufenden Probephase eventuelle Probleme oder Mängel an Herrn Dr. 
Mayer (man.mayer at aon.at) zu melden. Mittelfristig sollte der Talk-Server 
die Zentrale Informationsquelle sind, wo alle math. Events Österreichs 
laufend aktuell und übersichtlich aufgelistet zu finden sind.
Link: MathTalksAustria – Österreichischer Vortragsserver:

http://www.mathtalks.ac.at/home/this_week

Mit freundlichen Grüßen

Margit Honkisz
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