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Conferences, seminars, talks and other events at the MPI for Mathematics

Upcoming conferences & activities

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Model theory and applications

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Organiser(s): 
F. Loeser, B.Z. Moroz, A. Pillay, B.I. Zilber
Date: 
Sun, 2012-04-15 08:30 - Fri, 2012-06-15 20:00

Location: Max-Planck-Institut für Mathematik, Vivatsgasse 7, 53111 Bonn

 

We hope that bringing together specialists in different areas of mathematics would boost interesting discussions and plan to organise a few seminars and mini-courses covering, in particular, the following topics:

basics of model theory, algebraic geometry and model theory, Zariski geometries, Diophantine geometry and model theory, complex geometry and model theory, open problems in number theory and arithmetic geometry.

The program will culminate in a week long research conference on "Interactions of model theory with number theory and algebraic geometry", June 11 - 15, organised by J-B. Bost, Z. Chatzidakis, and R. Moosa (the organisers maintain a web-page of the conference at http://www.math.uwaterloo.ca/~imna/).
 

Abstracts:

Abstract will follow.

Semester on 4-manifolds and their combinatorial invariants

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Organiser(s): 
Mike Freedman, Matthias Kreck and Peter Teichner
Date: 
Tue, 2013-01-01 (All day) - Sun, 2013-06-30 (All day)
Details: 
Program and Abstracts of Semester on 4-manifolds and their combinatorial invariants

Organizers:

Mike Freedman, Matthias Kreck and Peter Teichner.

Upcoming Talks

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Abstracts of upcoming talks at the MPIM. For an overview see also the calendar.

Lectures on model theory and applications

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Date: 
Wed, 2012-04-25 11:00 - Fri, 2012-06-15 13:30
Location: 
MPI Seminar Room
Parent event: 
Seminar on model theory and applications
Details: 
Program and Abstracts of Lectures on model theory and applications

Graded manifolds, Lie algebroids, and equivariant cohomology. Last part.

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Speaker: 
Christian Blohmann
Affiliation: 
MPIM
Date: 
Wed, 2012-05-16 10:00 - 11:30
Location: 
MPI Lecture Hall
Parent event: 
Higher Differential Geometry Seminar

The algebraic numbers definable using exponentiation

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Speaker: 
Jonathan Kirby
Affiliation: 
UEA, Great Britain
Date: 
Wed, 2012-05-16 11:00 - 12:30
Location: 
MPI Seminar Room
Parent event: 
Seminar on model theory and applications 
In the complex field, the only numbers which are pointwise definable
(fixed under all field automorphisms) are the rational numbers. If we
add the exponential function, we can ask which algebraic numbers become
definable. We can distinguish the two square roots of 2, but what about
cube roots, or other algebraic numbers? We introduce the notion of real
abelian numbers, and show that they are all pointwise definable. Under a
strong conjecture, we can show these are the only definable complex
algebraic numbers. This is joint work with Macintyre and Onshuus.

Higher Dessins d'Enfants

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Speaker: 
Robert Kucharczyk
Date: 
Wed, 2012-05-16 13:45 - 14:45
Location: 
MPI Lecture Hall
Parent event: 
Number theory lunch seminar 
Dessins d'Enfants are seemingly simple combinatorial objects
that have been introduced by Grothendieck in order to encode coverings of
the two-sphere ramified at three points. Such a covering defines an
algebraic curve defined over a number field, and by a celebrated theorem
of Belyi, every algebraic curve defined over a number field occurs in this
way. As a consequence there is a faithful action of the absolute Galois
group of the rationals on dessins d'enfants.

In this talk we present an extension of this theory to an arbitrary finite
number of points on the sphere.

On the codimension 3 conjecture

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Speaker: 
Kari Vilonen
Date: 
Wed, 2012-05-16 15:00 - 16:00
Location: 
MPI Lecture Hall
Parent event: 
MPI-Oberseminar

Teichmueller curves and diagonalizable actions

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Speaker: 
Matt Bainbridge
Affiliation: 
Indiana U.
Date: 
Wed, 2012-05-16 16:30 - 17:30
Location: 
MPI Lecture Hall
Parent event: 
Oberseminar Differentialgeometrie

The canonical base property

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Speaker: 
A. Pillay
Date: 
Fri, 2012-05-18 11:00 - 12:30
Location: 
MPI Lecture Hall
Parent event: 
Seminar on model theory and applications

The canonical base property (CBP) is a certain stability-theoretic property whose formulation was
influenced by an "algebraicity" theorem of Campana for compact complex manifolds, and by an analogous
theorem for differential (and difference) algebraic varieties in char. 0 by myself and Ziegler (yielding a fast
account of function field Mordell-Lang in char. 0).
I will discuss this background, describe the CBP, and then prove some positive and negative results:
(i) The CBP holds for aleph-1 categorical theories under a "rigidity" assumption on definable automorphism

On Peterzil-Steinhorn subgroups

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Speaker: 
S. Starchenko
Affiliation: 
U. of Notre Dame
Date: 
Mon, 2012-05-21 13:30 - 15:00
Location: 
MPI Lecture Hall
Parent event: 
Seminar on model theory and applications

Surface diagrams of smooth 4-manifolds

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Speaker: 
Jonathan Williams
Affiliation: 
Georgia Inst. of Technology/MPI
Date: 
Mon, 2012-05-21 16:30 - 17:15
Location: 
MPI Lecture Hall
Parent event: 
Geometric Topology Seminar

Any smooth, closed oriented 4-manifold M has a surface diagram, which is a closed, orientable surface,
decorated with simple closed curves, that specifies M up to diffeomorphism. I will discuss various
properties of surface diagrams.



Surface diagrams of smooth 4-manifolds, II

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Speaker: 
Jonathan Williams
Date: 
Mon, 2012-05-21 17:30 - 18:15
Location: 
MPI Lecture Hall
Parent event: 
Geometric Topology Seminar

Any smooth, closed oriented 4-manifold M has a surface diagram, which is a closed, orientable surface,
decorated with simple closed curves, that specifies M up to diffeomorphism. I will discuss various
properties of surface diagrams.

 

Mathematical events in Bonn

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Bonn Mathematics Calendar

All mathematical events in Bonn are listed in the Bonn Mathematics Calendar. For directions see the map.

University Calendar

All lectures and courses at Bonn University can be found in the university calendar.

 

Recurring seminars, series and courses

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Detailed list of recurring seminars, series of talks, and courses or lectures comprising multiple talks. For an overview see also the calendar.

Friedrich Hirzebruch Lecture

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Location: 
University Club Bonn
Details: 
Program and Abstracts of Friedrich Hirzebruch Lecture

The annual Friedrich Hirzebruch Lecture is a series of lectures started in 2007 on the occasion of the 80th birthday of Prof. Friedrich Hirzebruch. The lectures address a general audience and aim at illustrating the relation between mathematics and art, society and other fields.

MPI-Oberseminar

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Organiser(s): 
C. Kaiser
Location: 
MPI Lecture Hall
Details: 
Program and Abstracts of MPI-Oberseminar

The Oberseminar is a very long running seminar at MPI (‘Ober‘ standing for 'upper'). Its idea is that the guests of the MPI speak in this seminar (hopefully early in their stay) and get the chance to explain their work to the other guests.

IMPRS Minicourse

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Organiser(s): 
C. Kaiser
Details: 
Program and Abstracts of IMPRS Minicourse

Seminar on Algebra, Geometry and Physics

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Details: 
Program and Abstracts of Seminar on Algebra, Geometry and Physics

Extra talks

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Details: 
Program and Abstracts of Extra talks

This is a collection of extra talks that don't fit into the other series.

Number theory lunch seminar

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Organiser(s): 
P. Moree
Location: 
MPI Lecture Hall
Details: 
Program and Abstracts of Number theory lunch seminar

The number theory lunch seminar takes place every Wednesday after a joint lunch of MPIM's number theorists...

Topics in Topology

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Location: 
MPI Lecture Hall
Details: 
Program and Abstracts of Topics in Topology

Seminar Algebraic Geometry (SAG)

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Details: 
Program and Abstracts of Seminar Algebraic Geometry (SAG)

Promotionskolloquium

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Details: 
Program and Abstracts of Promotionskolloquium

Oberseminar Differentialgeometrie

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Date: 
Wed, 2010-09-01 11:58 - Mon, 2012-12-31 11:58
Details: 
Program and Abstracts of Oberseminar Differentialgeometrie

Archived Events

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To narrow the list of events displayed please select year and event type or fill the search fields, then press Apply.

Mathematische Arbeitstagung 2011

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Organiser(s): 
Werner Ballmann, Gerd Faltings, Peter Teichner, Don Zagier
Date: 
Fri, 2011-06-24 00:00 - Fri, 2011-07-01 13:00
Details: 
Program and Abstracts of Mathematische Arbeitstagung 2011
List of participants
Final Program
Contact: AT2011@mpim-bonn.mpg.de
AT 2011 Preprint

 

Bonner Geometrietage

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Organiser(s): 
Christian Bär, Vicente Cortés, Ursula Hamenstädt, Bernhard Leeb
Date: 
Fri, 2011-04-08 (All day) - Tue, 2011-04-12 (All day)
Location: 
MPI Lecture Hall
Details: 
Program and Abstracts of Bonner Geometrietage
Contact:

Email: bgt11@mpim-bonn.mpg.de

Conference topics:

In honour of Prof. Dr. Werner Ballmann on the occasion of his 60th birthday, there will be a conference on recent developments in differential geometry. Topics include negatively curved spaces, geodesic flows, geometric group theory, and spectral geometry.

MPI-Oberseminar

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Organiser(s): 
C. Kaiser
Location: 
MPI Lecture Hall
Details: 
Program and Abstracts of MPI-Oberseminar

The Oberseminar is a very long running seminar at MPI (‘Ober‘ standing for 'upper'). Its idea is that the guests of the MPI speak in this seminar (hopefully early in their stay) and get the chance to explain their work to the other guests.

Friedrich Hirzebruch Lecture

Posted in
Location: 
University Club Bonn
Details: 
Program and Abstracts of Friedrich Hirzebruch Lecture

The annual Friedrich Hirzebruch Lecture is a series of lectures started in 2007 on the occasion of the 80th birthday of Prof. Friedrich Hirzebruch. The lectures address a general audience and aim at illustrating the relation between mathematics and art, society and other fields.

Semester on 4-manifolds and their combinatorial invariants

Posted in
Organiser(s): 
Mike Freedman, Matthias Kreck and Peter Teichner
Date: 
Tue, 2013-01-01 (All day) - Sun, 2013-06-30 (All day)
Details: 
Program and Abstracts of Semester on 4-manifolds and their combinatorial invariants

Organizers:

Mike Freedman, Matthias Kreck and Peter Teichner.

Batalin-Vilkovisky Structures on Ext and Tor

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Speaker: 
Ulrich Krähmer
Affiliation: 
Glasgow
Date: 
Wed, 2012-06-27 10:30 - 12:00
Location: 
MPI Lecture Hall
Parent event: 
Higher Differential Geometry Seminar

The topic of this talk is an algebraic structure whose best known example is provided by the multivector fields and the differential forms on a smooth manfiold: the multivector fields are a Gerstenhaber algebra with respect to wedge product and Schouten-Nijenhuis bracket, and the differential forms are what we call a Batalin-Vilkovisky module over this Gerstenhaber algebra, which means that the multivector fields act in two ways on forms - by means of contraction and of Lie derivative - and that these actions are related by a differential that fits into Cartan's "magic" homotopy formula.

t.b.a.

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Speaker: 
Chris Wendl (University College London)
Affiliation: 
University College London
Date: 
Mon, 2012-06-25 17:30 - 18:15
Location: 
MPI Lecture Hall
Parent event: 
Geometric Topology Seminar

t.b.a.

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Speaker: 
Chris Wendl (University College London)
Affiliation: 
University College London
Date: 
Mon, 2012-06-25 16:30 - 17:15
Location: 
MPI Lecture Hall
Parent event: 
Geometric Topology Seminar

End-periodic symplectic structure on cubic Fermat surface and Lawson's foliation on the 5-sphere, II

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Speaker: 
Yoshihiko Mitsumatsu
Affiliation: 
Chuo University
Date: 
Mon, 2012-06-11 17:30 - 18:15
Location: 
MPI Seminar Room
Parent event: 
Geometric Topology Seminar

End-periodic symplectic structure on cubic Fermat surface and Lawson's foliation on the 5-sphere

Posted in
Speaker: 
Yoshihiko Mitsumatsu
Affiliation: 
Chuo University
Date: 
Mon, 2012-06-11 16:30 - 17:15
Location: 
MPI Seminar Room
Parent event: 
Geometric Topology Seminar

Lawson's foliation is, among other codimension 1 foliations,
the first one which was found on S^5 (around 1970). Later on, ALberto  Verjovsky posed
questions (around 2000) whether if Lawson's one or  some modified ones admit leafwise
comple structures or leafwise  symplectic structures. In this talk the second one is answered 
affirmatively.

It seems not so common for Stein manifolds to admit an end-periodic  symplectic structure,
while the cubic Fermat surface does. We see its  construction and as an application we obtain

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