CMSA

A Celebration of Symplectic Geometry: 15 Years of JSG
2017-06-05 09:00 - 2017-06-06 17:00 (America/New_York) | 20 Garden Street, Cambridge, MA 02138, MA, MA, 02138, United States
In celebration of the Journal of Symplectic Geometry’s 15th anniversary, the Center of Mathematical Sciences and Applications will be hosting A Celebration of Symplectic Geometry: 15 Years of JSG on June 5-6, 2017.
Confirmed speakers:

Roger Casals, MIT
Chen He, Northeastern University
Yael Karshon, University of Toronto
Ailsa Keating, Institute of Advanced Study
Eckhard Meinrenken, University of Toronto
Ana Rita Pires, Fordham University
Sobhan Seyfaddini, Institute of Advanced Study
Alejandro Uribe, University of Michigan
Jonathan Weitsman, Northeastern University

The conference is co-organized by Denis Auroux and Victor Guillemin. Additional information on the conference will be announced closer to the event.
Schedule:
June 5, Monday (Full day)

Time
Speaker
Topic

8:30am – 9:0am

Breakfast

9:00am – 10:00am
Jonathan Weitsman
Title: On the geometric quantization of (some) Poisson manifolds

10:30am – 11:30am
Eckhard Meinrenken
Title: On Hamiltonian loop group spaces
Abstract: Let G be a compact Lie group. We explain a construction of an LG-equivariant spinor module over any Hamiltonian loop group space with proper moment map. It may be regarded as its `canonical spin-c structure’. We show how to reduce to finite dimensions, resulting in actual spin-s structure on transversals, as well as twisted spin-c structures for the associated quasi-hamiltonian space. This is based on joint work with Yiannis Loizides and Yanli Song.

11:30am – 1:30pm

Break

1:30pm – 2:30pm
Ana Rita Pires
Title: Infinite staircases in symplectic embedding problems
Abstract: McDuff and Schlenk studied an embedding capacity function, which describes when a 4-dimensional ellipsoid can symplectically embed into a 4-ball. The graph of this function includes an infinite staircase related to the odd index Fibonacci numbers. Infinite staircases have been shown to exist also in the graphs of the embedding capacity functions when the target manifold is a polydisk or the ellipsoid E(2,3). I will describe how we use ECH capacities, lattice point counts and Ehrhart theory to show that infinite staircases exist for these and a few other target manifolds, as well as to conjecture that these are the only such target manifolds. This is a joint work with Cristofaro-Gardiner, Holm and Mandini.
Video

3:00pm – 4:00pm
Sobhan Seyfaddini
Title: Rigidity of conjugacy classes in groups of area-preserving homeomorphisms
Abstract: Motivated by understanding the algebraic structure of groups of area-preserving homeomorphims F. Beguin, S. Crvoisier, and F. Le Roux were lead to the following question: Can the conjugacy class of a Hamiltonian homeomorphism be dense? We will show that one can rule out existence of dense conjugacy classes by simply counting fixed points. This is joint work with Le Roux and Viterbo.

4:30pm – 5:30pm
Roger Casals
Title: Differential Algebra of Cubic Graphs
Abstract: In this talk we will associate a combinatorial dg-algebra to a cubic planar graph. This algebra is defined by counting binary sequences, which we introduce, and we shall provide explicit computations and examples. From there we study the Legendrian surfaces behind these constructions, including Legendrian surgeries, the count of Morse flow trees involved in contact homology, and the relation to microlocal sheaves. Time permitting, I will explain a connection to spectral networks.Video

June 6, Tuesday (Full day)

Time
Speaker
Topic

8:30am – 9:00am

Breakfast

9:00am – 10:00am
Alejandro Uribe
Title: Semi-classical wave functions associated with isotropic submanifolds of phase space
Abstract: After reviewing fundamental ideas on the quantum-classical correspondence, I will describe how to associate spaces of semi-classical wave functions to isotropic submanifolds of phase space satisfying a Bohr-Sommerfeld condition. Such functions have symbols that are symplectic spinors, and they satisfy a symbol calculus under the action of quantum observables. This is the semi-classical version of the Hermite distributions of Boutet the Monvel and Guillemin, and it is joint work with Victor Guillemin and Zuoqin Wang. I will inlcude applications and open questions.
Video

10:30am – 11:30am
Alisa Keating
Title: Symplectomorphisms of exotic discs
Abstract: It is a theorem of Gromov that the group of compactly supported symplectomorphisms of R^4, equipped with the standard symplectic form, is contractible. While nothing is known in higher dimensions for the standard symplectic form, we show that for some exotic symplectic forms on R^{4n}, for all but finitely n, there exist compactly supported symplectomorphisms that are smoothly non-trivial. The principal ingredients are constructions of Milnor and Munkres, a symplectic and contact version of the Gromoll filtration, and Borman, Eliashberg and Murphy’s work on existence of over-twisted contact structures. Joint work with Roger Casals and Ivan Smith.
Video

11:30am – 1:30pm

Break

1:30pm – 2:30pm
Chen He
Title: Morse theory on b-symplectic manifolds
Abstract: b-symplectic (or log-symplectic) manifolds are Poisson manifolds equipped with symplectic forms of logarithmic singularity. Following Guillemin, Miranda, Pires and Scott’s introduction of Hamiltonian group actions on b-symplectic manifolds, we will survey those classical results of Hamiltonian geometry to the b-symplectic case.
Video

3:00pm – 4:00pm
Yael Karshon
Title: Geometric quantization with metaplectic-c structures
Abstract: I will present a variant of the Kostant-Souriau geometric quantization procedure that uses metaplectic-c structures to incorporate the “half form correction” into the prequantization stage. This goes back to the late 1970s but it is not widely known and it has the potential to generalize and improve upon recent works on geometric quantization.
Video

5/23/2017 CMSA Special Seminar
2017-05-23 13:32 | CMSA Room G10, CMSA, 20 Garden Street, Cambridge, MA, 02138, United States

5-3-2017 Random Matrix & Probability Theory Seminar
2017-05-03 13:29 | MA

5-2-2017 Social Sciences Application Forum
2017-05-02 13:30 | MA

Working Conference on Covariance Analysis in Biology, May 1-4, 2017
2017-05-01 09:00 - 2017-05-02 17:00 | 20 Garden Street, Cambridge, MA 02138, MA, MA, 02138, United States
The Center of Mathematical Sciences and Applications will be hosting a working Conference on Covariance Analysis in Biology, May 1-4, 2017. The conference will be hosted in Room G10 of the CMSA Building located at 20 Garden Street, Cambridge, MA 02138.
This event is open and free. If you would like to attend, please register here to help us keep a headcount. A list of lodging options convenient to the Center can also be found on our recommended lodgings page.
Speakers:
Orr Ashenberg, Fred Hutchinson Cancer Research Center
John Barton, Massachusetts Institute of Technology
Simona Cocco, Laboratoire de Physique Statistique de l’ENS
Sean Eddy, Harvard University
Efthimios Kaxiras, Harvard University

Michael Laub, Massachusetts Institute of Technology
Debora S. Marks, Harvard University

Govind Menon, Brown University
Rémi Monasson, Laboratoire de Physique Théorique de l’ENS
Andrew Murray, Harvard University
Ilya Nemenman, Emory College

Chris Sander, Dana-Farber Cancer Institute, Harvard Medical School

Dave Thirumalai, University of Texas at Austin
Martin Weigt, IBPS, Université Pierre et Marie Curie
Matthieu Wyart, EPFL
More speakers will be confirmed soon.

Schedule:
(Please click here for a downloadable version of the schedule.)
Please note that the schedule for both days is currently tentative and is subject to change.
May 1, Monday

Time
Speaker
Topic

9:00-10:00am
Sean Eddy
TBA

10:00-11:00am
Mike Laub
TBA

11:00am-12:00pm
Ilya Nemenman
TBA

May 2, Tuesday

Time
Speaker
Topic

9:00-10:00am
Orr Ashenberg
TBA

10:00-11:00am
Debora Marks
TBA

11:00am-12:00pm
Martin Weigt
TBA

4:30pm-5:30pm
Simona Cocco
CMSA Colloquia

May 3, Wednesday

Time
Speaker
Topic

9:00-10:00am
Andrew Murray
TBA

10:00-11:00am
Matthieu Wyart
TBA

11:00am-12:00pm
Rémi Monasson
TBA

May 4, Thursday

Time
Speaker
Topic

9:00-10:00am
David Thirumalai
TBA

10:00-11:00am
Chris Sander
TBA

11:00am-12:00pm
John Barton
TBA

Organizers:

Michael Brenner, Lucy Colwell, Elena Rivas, Eugene Shakhnovich

* This event is sponsored by CMSA Harvard University.

Past Events

JDG 2017 Conference
2017-04-28 09:00 - 2017-05-02 17:00 | Harvard Science Center, 1 Oxford Street, Cambridge, MA, 02138
In celebration of the Journal of Differential Geometry’s 50th anniversary, the Harvard Math Department will be hosting the Tenth Conference on Geometry and Topology (JDG 2017) from April 28 – May 2, 2017.
Confirmed Speakers

Mina Aganagic, UC Berkeley
Denis Auroux, UC Berkeley
Caucher Birkar, University of Cambridge
Huai-Dong Cao, Lehigh University
Tristan Collins, Harvard University
Camillo De Lellis, ETH Zurich
Jean-Pierre Demailly, Grenoble Alpes University
Simon Donaldson, Stony Brook University
Dan Freed, University of Texas at Austin
Kenji Fukaya, Stony Brook University
David Gabai, Princeton University
Larry Guth, Massachusetts Institute of Technology
Richard Hamilton, Columbia University
Yujiro Kawamata, University of Tokyo
Frances Kirwan, Oxford University
Blaine Lawson, Stony Brook University
Jun Li, Stanford University
Si Li, Tsinghua University
Bong Lian, Brandeis University
Chiu-Chu Melissa Liu, Columbia University
Ciprian Manolescu, University of California, Los Angeles
Fernando Marques, Princeton University
William Meeks, University of Massachusetts Amherst
William Minicozzi, Massachusetts Institute of Technology
John Pardon, Princeton University
Duong Phong, Columbia University
Alena Pirutka, Courant Institute of New York University
Richard Schoen, University of California, Irvine
Artan Sheshmani, QGM Aarhus University/Harvard University
Cliff Taubes, Harvard University
Cumrun Vafa, Harvard University
Mu-Tao Wang, Columbia University
Shing-Tung Yau, Harvard University
Steve Zelditch, Northwestern University

* This event is co-sponsored by Lehigh University and partially supported by the National Science Foundation.

4-27-2017 CMSA Special Seminar
2017-04-27 13:21 | MA

4-24-2017 Mathematical Physics Seminar
2017-04-24 13:31 | MA

Workshop on Quantum Information
2017-04-23 09:00 - 2017-04-24 17:00 | 20 Garden Street, Cambridge, MA 02138, MA, MA, 02138, United States
The Center of Mathematical Sciences and Applications will be hosting a workshop on Quantum Information on April 23-24, 2018. In the days leading up to the conference, the American Mathematical Society will also be hosting a sectional meeting on quantum information on April 21-22. You can find more information here.
The following speakers are confirmed:

Fernando G.S.L Brandão (CalTech)
Jacob Biamonte (Skoltech)
Isaac Chuang (MIT)
Iris Cong (Harvard)
Aram Harrow (MIT)
Ke Li (HIT)
Mikhail D. Lukin (Harvard)
Shunlong Luo (AMSS)
Renato Renner (ETH Zürich)
Peter Shor (MIT)

4-19-2017 Random Matrix & Probability Theory Seminar
2017-04-19 13:22 | MA

4-18-2017 Social Science Applications Forum
2017-04-18 11:00 - 12:00 | CMSA, 20 Garden Street, Cambridge, MA, 02138, United States

4-17-2017 Mathematical Physics Seminar
2017-04-17 13:14 | MA

4-14-2017 Special Lecture Series
2017-04-14 12:46 | MA

4-12-2017 Social Science Applications Forum
2017-04-12 12:53 | MA

4-12-2017 Special Lecture Series
2017-04-12 12:44 | MA

04-12-2017 Random Matrix & Probability Theory Seminar
2017-04-12 11:56 | MA

4-11-2017 Social Science Applications Forum
2017-04-11 13:00 | MA

4-10-2017 Mathematical Physics Seminar
2017-04-10 13:07 | MA

4-7-2017 Special Lecture Series
2017-04-07 12:43 | MA

4-6-2017 CMSA Special Seminar
2017-04-06 12:51 | MA

4-5-2017 Special Lecture Series
2017-04-05 12:42 | MA

4-5-2017 Random Matrix & Probability Theory Seminar
2017-04-05 12:31 | MA

4-3-2017 Mathematical Physics Seminar
2017-04-03 12:50 | MA

3-30-2017 CMSA Special Seminar
2017-03-30 12:38 | MA

3-29-2017 Random Matrix & Probability Theory Seminar
2017-03-29 12:35 | MA

Working Conference on Materials and Data Analysis, March 27-30, 2017
2017-03-27 15:34 - 2017-03-30 15:34 | CMSA Room G10, CMSA, 20 Garden Street, Cambridge, MA, 02138, United States
The Center of Mathematical Sciences and Applications will be hosting a 5-day working Conference on Materials and Data Analysis and related areas, March 27-30, 2017. The conference will be hosted in Room G10 of the CMSA Building located at 20 Garden Street, Cambridge, MA 02138.
Photos of the event can be found on CMSA’s Blog.
Participants:

Ryan P. Adams, Harvard University
Jörg Behler, University of Göttingen
Kieron Burke, University of California, Irvine
Lucy Colwell, University of Cambridge
Gábor Csányi, University of Cambridge
Ekin Doğuş Çubuk, Stanford University
Leslie Greengard, Courant Institute of Mathematical Sciences, New York University
Petros Koumoutsakos, Radcliffe Institute for Advanced Study, Harvard University
Govind Menon, Brown University
Evan Reed, Stanford University
Patrick Riley, Google
Matthias Rupp, Fitz Haber Institute of the Max Planck Society
Sadasivan Shankar, Harvard University
Dennis Sheberla, Harvard University

Organizers:

Michael Brenner, Efthimios Kaxiras

* This event is sponsored by CMSA Harvard University.

Schedule:

Monday, March 27

Time
Speaker
Title

8:30am – 9:00am
Breakfast

9:00am – 10:00am
Kieron Burke, University of California, Irvine
Background in DFT and electronic structure calculations

10:00am – 11:00am
Kieron Burke, University of California, Irvine

The density functionals machines can learn

11:00am – 12:00pm
Sadasivan Shankar, Harvard University
A few key principles for applying Machine Learning to Materials (or Complex Systems) — Scientific and Engineering Perspectives

Tuesday, March 28

Time
Speaker
Title

8:30am – 9:00am
Breakfast

9:00am – 10:00am
Ryan Adams, Harvard
TBA

10:00am – 11:00am
Gábor Csányi, University of Cambridge

Interatomic potentials using machine learning: accuracy, transferability and chemical diversity

11:00am – 1:00pm
Lunch Break

1:00pm – 2:00pm
Evan Reed, Stanford University
TBA

Wednesday, March 29

Time
Speaker
Title

8:30am – 9:00am
Breakfast

9:00am – 10:00am
Patrick Riley, Google
The Message Passing Neural Network framework and its application to molecular property prediction

10:00am – 11:00am
Jörg Behler, University of Göttingen
TBA

11:00am – 12:00pm
Ekin Doğuş Çubuk, Stanford Univers
TBA

4:00pm
Leslie Greengard, Courant Institute
Inverse problems in acoustic scattering and cryo-electron microscopy
CMSA Colloquium

Thursday, March 30

Time
Speaker
Title

8:30am – 9:00am
Breakfast

9:00am – 10:00am
Matthias Rupp, Fitz Haber Institute of the Max Planck Society
TBA

10:00am – 11:00am
Petros Koumoutsakos, Radcliffe Institute for Advanced Study, Harvard
TBA

11:00am – 1:00pm
Lunch Break

1:00pm – 2:00pm
Dennis Sheberla, Harvard University
Rapid discovery of functional molecules by a high-throughput virtual screening

Events, Past Events

03-27-2017 Mathematical Physics Seminar
2017-03-27 12:40 | MA

3-24-2017 Random Matrix & Probability Theory Seminar
2017-03-24 10:00 - 11:00 | CMSA, 20 Garden Street, Cambridge, MA, 02138, United States

3-22-2017 Random Matrix & Probability Theory Seminar
2017-03-22 12:01 | MA

3-21-2017 Social Science Applications Forum
2017-03-21 12:28 | MA
