Berkovich Spaces V
Monday, 2.12.13, 10:15-11:15, Raum 119, Eckerstr. 1
The Kähler-Einstein problem
Monday, 2.12.13, 16:15-17:15, Raum 404, Eckerstr. 1
This will be an overview of the Kähler-Einstein problem, including its very recent resolution in the positive case.
Berkovich Spaces VI
Tuesday, 3.12.13, 10:15-11:15, SR 414
Realization of aleph_k-free modules via Shelah's Easy Black Box
Wednesday, 4.12.13, 16:00-17:00, Raum 404, Eckerstr. 1
Realization of aleph_k-free modules with few endomorphisms via Shelah's Easy Black Box
Wednesday, 4.12.13, 16:00-17:00, Raum 404, Eckerstr. 1
Optimal feedback control for undamped wave equations by solving a HJB equation
Thursday, 5.12.13, 14:15-15:15, Fakultätsraum, Raum: 427 (Eckerstr. 1)
Thursday, 5.12.13, 17:00-18:00, Hörsaal II, Albertstr. 23b
Differential forms in the h-topology
Friday, 6.12.13, 10:15-11:15, Raum 404, Eckerstr. 1
The h-topology on the category of separated schemes of\nfinite type over a field of characteristic zero was\nintroduced by Voevodsky to study the homology of schemes. I\nwill discuss in my talk the sheaves of h-differential\nforms, i.e., the appropriate notion of differential forms\nin the h-topology. Subsequently I will study their\nbehaviour on rationally chain connected spaces and the\nconnection to algebraic de Rham cohomology. This is joint\nwork with Annette Huber-Klawitter.\n
Zeitstetige Moving-Average Prozesse und Anwendungen auf die Strompreismodellierung
Friday, 6.12.13, 11:30-12:30, Raum 404, Eckerstr. 1
A universal eta-Invariant for G2-Structures
Monday, 9.12.13, 16:00-17:00, Raum 404, Eckerstr. 1
In this talk I will give a short introduction to the exceptional Lie-group G2. Then I will motivate G2-structure with G2-manifolds, i. e. Riemannian manifolds with holonomy group G2, that are an exceptional case in the classification of Berger and allegedly have applications in physics. On these G2-structures Crowley and Nordström defined the nu-invariant with values in Z/48Z, which I will explain. The mod 3 reduction of the nu-invariant is a G2-bordism invariant and has been interpreted as a universal eta-invariant in my thesis.
tba
Monday, 9.12.13, 16:15-17:15, Raum 404, Eckerstr. 1
The first-order theory of universal specialisations of Zariski structures
Wednesday, 11.12.13, 16:30-17:30, Raum 404, Eckerstr. 1
Thursday, 12.12.13, 17:00-18:00, Hörsaal II, Albertstr. 23b
Graph algebras
Friday, 13.12.13, 10:15-11:15, Raum 404, Eckerstr. 1
From a graph (e.g., cities and flights between them) one can generate an algebra which captures the movements along the graph.\n\nThis talk is about one type of such correspondences, i.e., Leavitt path algebras.\n\nDespite being introduced only 8 years ago, Leavitt path algebras have arisen in a variety of different contexts as diverse as analysis, symbolic dynamics, noncommutative geometry and representation theory. In fact, Leavitt path algebras are algebraic counterpart to graph C*-algebras, which has become an area of intensive research. There are strikingly parallel similarities between these two theories. Even more surprisingly, one cannot (yet) obtain the results in one theory as a consequence of the other; the statements look the same, however the techniques to prove them are quite different (as the names suggest, one uses Algebra and other Analysis). These all suggest that there might be a bridge between Algebra and Analysis yet to be uncovered.\n\nIn this talk, we introduce Leavitt path algebras and then try to understand the behaviour and to classify them by means of (graded) K-theory. We will ask nice questions!\n
Cross-sectional Sampling, Bias and Dependence
Friday, 13.12.13, 11:30-12:30, Raum 404, Eckerstr. 1
Algebraic K-theory, eta-invariant and homology sphere
Monday, 16.12.13, 16:15-17:15, Raum 404, Eckerstr. 1
In this talk we will discuss how to use eta-invariant to find some geometric models for some algebraic K-groups.
Von Stühlen, Definitionen und Funktionen
Tuesday, 17.12.13, 19:30-20:30, Hörsaal II, Albertstr. 23b
Wenn das kein Integral ist, was ist es denn dann? Wie entstehen Konzepte in unserem Kopf? Lernen wir Begriffe wie Vokabeln einer Fremdsprache? \nDieser Vortrag spürt Antworten auf diese und weitere Fragen auf, um daraus mögliche Konsequenzen für den Mathematikunterricht abzuleiten. Dabei werden die Zuhörer zu einigen Versuchen mit Schuhen, Tafeln, Stühlen und Rechnern eingeladen, um die theoretischen Hintergründe sinnlich erfahrbar zu machen. \nInhaltliche und methodische Beispiele aus dem Unterricht konkretisieren abschließend die vorausentworfenen Überlegungen. \n
t.b.a.
Wednesday, 18.12.13, 16:30-17:30, Raum 404, Eckerstr. 1
Silver versus club-Silver in the generalized Cantor space
Wednesday, 18.12.13, 16:30-17:30, Raum 404, Eckerstr. 1
On buttons and balls that cannot run away
Thursday, 19.12.13, 17:00-18:00, Hörsaal II, Albertstr. 23b
This lecture presents convex sets of constant width. They are\ncharacterized by the fact that any two nonidentical tangent lines or tangent\nplanes have the same distance from each other, but they are not necessarily\ndiscs (in the plane) or balls (in 3-space). I will show how such sets can be\nused to drill square holes, and that the ignorance of such sets had fatal\nconsequences in the American space flight program. I shall also report on a\nlong-standing open conjecture and its recent development. The talk contains\nalso some video clips and is suitable for a general audience with\nmathematical interest.
Friday, 20.12.13, 10:15-11:15, Raum 404, Eckerstr. 1
Thursday, 26.12.13, 17:00-18:00, Hörsaal II, Albertstr. 23b