[iasmath-semru] Mathematics Seminars--Week of December 17, 2018

[Kristina Phillips]

INSTITUTE FOR ADVANCED STUDY

School of Mathematics

Princeton, NJ 08540

 

Mathematics Seminars

Week of December 17, 2018

 

 

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Announcements:

The following seminars have concluded for the Fall 2018 term (effective the
week of Dec. 17), and will resume on the dates provided below. Additional
information will be sent on a later date that will confirm the dates/times
for the Spring 2019 Mathematics Seminars.

 

CSDM - no seminars this week, and will resume January 22.

TML - no seminar this week, and will resume in January. 

Members' Seminar - no seminar this week, and will resume January 28. 

PU/IAS Symplectic Dynamics/Geometry Seminar - final talk is Monday, Dec. 17,
and will resume in January.

Special Year Seminar-Variational Methods in Geometry-final talk is on
Tuesday, Dec. 18 at 1:00pm. There will be no 3:30pm seminar, and will resume
January 15.

Informal Group Action Seminar - Seminar has concluded.

Math Conversations - no seminar this week, and will resume in January. 

Venkatesh Working Group, Working Seminar in Algebraic Number Theory, Joint
IAS/PU Number Theory Seminar - no seminars this week, and will resume
January 24.

Analysis - No seminar this week, and will resume in January. 

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Monday, December 17

 

Symplectic Dynamics/Geometry Seminar

Topic:                    Barcodes and $C^0$ symplectic topology

Speaker:              Sobhan Seyfaddini, ENS Paris

Time/Room:       3:30pm - 5:00pm/Simonyi Hall 101

Abstract Link:      <http://www.math.ias.edu/seminars/abstract?event=137937>
http://www.math.ias.edu/seminars/abstract?event=137937

 

 

 

Tuesday, December 18

 

Variational Methods in Geometry Seminar

Topic:                    Bounds in Renormalized Volume for Hyperbolic
3-manifolds

Speaker:              Franco Vargas Pallete, University of California,
Berkeley; Member, School of Mathematics

Time/Room:       1:00pm - 3:00pm/Simonyi Hall 101

Abstract Link:      <http://www.math.ias.edu/seminars/abstract?event=140492>
http://www.math.ias.edu/seminars/abstract?event=140492

 

Symplectic Dynamics Working Group

Topic:                    Celestial Mechanics and Holomorphic Curves II

Speaker:              Umberto Hryniewicz

Time/Room:       1:30pm - 3:00pm/Simonyi Hall Classroom 114

Abstract Link:      <http://www.math.ias.edu/seminars/abstract?event=140630>
http://www.math.ias.edu/seminars/abstract?event=140630

 

 

 

Friday, December 21

 

Allen-Cahn/Ginzburg-Landau Reading group

Speaker:              TBD

Time/Room:       10:00am - 12:00pm/Simonyi Hall 101

 

1 Barcodes and $C^0$ symplectic topology 
   Sobhan Seyfaddini 




Hamiltonian homeomorphisms are those homeomorphisms of a symplectic manifold
which can be written as uniform limits of Hamiltonian diffeomorphisms. One
difficulty in studying Hamiltonian homeomorphisms (particularly in
dimensions greater than two) has been that we possess fewer tools for
studying them. For example, (filtered) Floer homology, which has been a very
effective tool for studying Hamiltonian diffeomorphisms, is not well-defined
for homeomorphisms. We will show in this talk that using barcodes and
persistence homology one can indirectly define (filtered) Floer homology for
Hamiltonian homeomorphisms.

http://www.math.ias.edu/seminars/abstract?event=137937




2 Bounds in Renormalized Volume for Hyperbolic 3-manifolds 
   Franco Vargas Pallete 




Renormalized volume (and more generally W-volume) is a geometric quantity
found by volume regularization. In this talk I'll describe its properties
for hyperbolic 3-manifolds, as well as discuss techniques to prove
optimality results.

http://www.math.ias.edu/seminars/abstract?event=140492




3 Celestial Mechanics and Holomorphic Curves II 
   Umberto Hryniewicz 




I would like to discuss three topics concerning applications of holomorphic
curve methods to the planar circular restricted three-body problem. The
first is the existence of direct orbits and a conjecture due to Birkhoff.
The second is the use of finite-energy foliations to estimate topological
entropy via symbolic dynamics. The third is the existence of forcing
phenomena for periodic orbits for energies slightly above the lowest
critical value, related to some kind of "local Weinstein conjecture" that
can be of independent interest.

http://www.math.ias.edu/seminars/abstract?event=140630

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