Alternatively have a look at the program.

## Uniqueness of the contact structure approximating a foliation

Posted in

Speaker:

Thomas Vogel
Affiliation:

MPI
Date:

Thu, 2013-04-11 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie According to a theorem of Eliashberg and Thurston a C^{2}-foliation on a closed 3-manifold can be C^{0}-approximated by contact structures unless all leaves of the foliation are spheres. Examples on the 3-torus show that every neighbourhood of a foliation can contain

infinitely many non-diffeomorphic contact structures. In this talk we show that this is rather exceptional: In many interesting situations the contact structure in a sufficiently small

## Low dimensional collapsing theory and soul theorem for Alexandrov spaces

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Speaker:

Jian Ge
Affiliation:

Dotre Dame
Date:

Thu, 2013-04-18 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie In this talk we will give an overview of the collapsing theory for 3-dimensional manifolds with a lower sectional curvature bound. This theory first developed by Shioya and Yamaguchi served as the completion of the last claim in Perelman's Proof of Geometrization Conjecture. The basic techniques used in the study will be presented with emphasis on Perelman's Fibration Theorem and Soul Theorem. Collapsing theory with bounded sectional curvature will also be quickly reviewed so that we can see the differences/parallel structures between these two theory.

## Representations from a metric point of view

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Speaker:

Alexander Lytchak
Affiliation:

Universität zu Köln
Date:

Thu, 2013-05-16 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie In the talk I will discuss metric properties of quotient spaces of representations of compact groups

on Euclidean spaces.

## Analytic construction of dihedral A.L.F. gravitational instantons

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Speaker:

Hugues Auvray
Date:

Thu, 2013-06-27 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie ## Calabi-Yau Conjecture for Minimal Surfaces

Posted in

Speaker:

Baris Coskunuzer
Affiliation:

KOC Univ. Istanbul/MPI
Date:

Thu, 2013-07-18 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie In this talk, I will first give an outline of the current state of the Calabi-Yau Conjecture, which asserts that any complete, embedded minimal surface in R^{^3}must be properly embedded. Then, I will give a construction of a counterexample in H^{^3}.

## The geometry of biinvariant word metrics

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Speaker:

Jaroslaw Kedra
Affiliation:

U of Aberdeen
Date:

Thu, 2013-10-31 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie Let G be a normally finitely generated group and let |g| be the conjugation invariant word norm of an element g of G. We are interested in the growth rate of the function n --> |g^n|. A priori this can be anything between bounded and linear. I will show that for many classes of groups there is a dichotomy: |g^n| is either bounded or linear.

## Construction of surfaces with large systolic ratio

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Speaker:

Bjoern Muetzel
Affiliation:

University Montpellier 2
Date:

Thu, 2013-12-12 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie ## The long-time evolution of three-dimensional Ricci flow

Posted in

Speaker:

John Lott
Date:

Thu, 2014-01-09 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie ## Coarse topology of leaves of foliations

Posted in

Speaker:

Robert Schmidt
Affiliation:

LMU München
Date:

Thu, 2014-01-23 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie ## On isoparametric hypersurfaces

Posted in

Speaker:

Uwe Abresch
Affiliation:

Ruhr U Bochum
Date:

Thu, 2014-01-30 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

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