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Oberseminar Differentialgeometrie: Niels Martin Møller (Kopenhagen): Forgetful classifications of ancient mean curvature flows

Montag, 17.06.2019 16:15 im Raum SR4
Mathematik und Informatik

Abstract: Ancient flows arise as singularity models via blow-ups, and the first examples were found by Mullins in 1956. Insight from gluing constructions indicate that classifying them fully is not viable, except under e.g. pointwise positive curvature assumptions. However, without any such restrictions on curvatures or topology, if one applies certain "forgetful" operations - discard time coordinates and take convex hulls - then we show that only four types of behavior may occur. For this, we first prove a natural "wedge theorem" for proper ancient flows, which adds to a long story: F.ex. it generalizes our own wedge theorem for self-translaters from 2018 (the main motivating case in the talk) which implies the minimal surface case by Hoffman-Meeks from 1990 that in turn contains the classical cone theorem by Omori from 1967. This is joint work with Francesco Chini (U Copenhagen).



Angelegt am Dienstag, 16.04.2019 13:43 von shupp_01
Geändert am Donnerstag, 23.05.2019 09:08 von shupp_01
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Veranstaltungen am Mathematischen Institut
Oberseminare und sonstige Vorträge
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pfeifer

Allen Gehret (UCLA): Towards a Model Theory of Logarithmic Transseries

Dienstag, 18.06.2019 15:00 im Raum SR 1D
Mathematik und Informatik

In this talk I will first define and describe the mathematical object $\mathbb{T}_{\log}$: the ordered valued differential field of logarithmic transseries. I will then discuss a strategy I have developed for proving $\mathbb{T}_{\log}$ is model complete in a certain language that I will introduce. I reduce the problem of model completeness down to two precise conjectures concerning the nature of logarithmic derivatives, solutions of linear differential equations, and differential-transcendence.



Angelegt am Freitag, 14.06.2019 14:01 von pfeifer
Geändert am Freitag, 14.06.2019 14:01 von pfeifer
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elke

Ringvorlesung 2019: Michael Joachim: tba.

Mittwoch, 19.06.2019 16:15 im Raum M2
Mathematik und Informatik



Angelegt am Freitag, 21.12.2018 08:51 von elke
Geändert am Mittwoch, 03.04.2019 11:57 von elke
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Kolloquium Wilhelm Killing: Dr. André Hendriques (University of Oxford): Three approaches to conformal field theory

Donnerstag, 04.07.2019 16:30 im Raum M5
Mathematik und Informatik

There exist three mathematical formalizations of the concept of chiral conformal field theory: Vertex operator algebras, Conformal nets, and Segal CFTs. These three notions are expected/conjectured to be equivalent (provided appropriate qualifiers are added). In this overview talk, I will explain, based on examples, what are Vertex operator algebras, Conformal nets, and Segal CFTs. I will describe how one is supposed to go from one formalism to the other, and where the main difficulties lie.



Angelegt am Donnerstag, 21.03.2019 14:35 von shupp_01
Geändert am Dienstag, 16.04.2019 10:44 von shupp_01
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Kolloquium Wilhelm Killing
Konferenzen+Kolloquien
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Prof. Dr. Walther Paravicini (Eberhard Karls Universität Tübingen): Mathematik lernen an Beruflichen Gymnasien

Dienstag, 09.07.2019 17:15 im Raum M5
Mathematik und Informatik

Kolloquium über Geschichte und Didaktik der Mathematik



Anlagen
Flyer Kolloquium.pdf
Abstract Prof. Dr. Paravicini.pdf

Angelegt am Mittwoch, 13.03.2019 12:13 von sauff_01
Geändert am Donnerstag, 14.03.2019 08:38 von sauff_01
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Kolloq. Geschichte und Didaktik der Mathematik
Didaktik
Konferenzen+Kolloquien
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