Differential Geometry & Symplectic Topology Seminar

School of Mathematics, University of Minnesota






2009-2014  
Organizer: Anar Akhmedov
Time: Thursdays  1:30 p.m. (Sometimes on Tuesdays)

Place: Vincent Hall 570.

 

2013-2014


 
DATE SPEAKER TITLE
September 17 Sean Cleary
CCNY
"Periodic tree diagrams and commensurations of Thompson's group F"
Abstract
September 26 Ke Zhu
Harvard University
"Isometric embeddings of Einstein manifolds via heat kernel"
Abstract
October 3 Jun Li
University of Minnesota
"The symplectic mapping class group of CP^2 \# n{\bar CP^2} with n < 5"
Abstract
October 10 Gregg Musiker
University of Minnesota
"Bases for Cluster Algebras from Surfaces"
Abstract
October 17 Azer Akhmedov
North Dakota State University
"Non-amenability of R.Thompson's group F"
Abstract
October 22 (Vincent Hall 570) Tatyana Khodorovskiy
Hunter College of CUNY
"Bounds on embeddings of rational homology balls in symplectic 4-manifold"
October 31 Ovidiu Munteanu
University of Connecticut
"Topology at infinity of Ricci solitons"
Abstract
November 7 Khalid Bou-Rabee
University of Minnesota
"Quantifying residual finiteness"
Abstract
November 14 Xiaolan Nie
University of Minnesota
Regularity of a complex Monge-Ampère equation on Hermitian manifolds
Abstract
November 22 (FRIDAY, Time 4.30pm, Vincent Hall 206) Tedi Draghici
Florida International University
"On almost complex 4-dimensional Lie algebras"
Abstract
December 5 Richard Moeckel
University of Minnesota
Geometry of the reduced and regularized planar three-body problem
Abstract
January 30 Alex Zupan
University of Texas at Austin
The geometry of the pants graph
Abstract
February 6 Mark Hughes
Stony Brook
Constructions of broken fibrations on 4-manifolds
Abstract
February 13 Li-Sheng Tseng
University of California Irvine
Products and cohomologies of differential forms on symplectic manifolds
February 20 David McReynolds
Purdue University
Primitive geodesics and arithmetic progressions
February 27 Josef Dorfmeister
North Dakota State University
Stability of Symplectic Submanifolds
Abstract
March 20 No Seminar - Spring Break


April 3 Robert Gulliver
University of Minnesota
Branch Points of Area-minimizing Nonorientable Surfaces
April 17 David Favero
University of Alberta
HMS, Constructible sheaves, Lagrangian Skeleta, and VGIT
Abstract
May 1 Selman Akbulut
Michigan State University
Fake symplectic homology S^2 x S^2 of Akhmedov and Park
May 8 Gabriele La Nave
University of Illinois at Urbana-Champaign
Isotropic curvature, macroscopic dimension filling radius of contractible loops and fundamental group
Abstract
May 29 Guangbo Xu
University of California, Irvine

July 17 Mark McLean
Stony Brook
Minimal Discrepancy of Isolated Singularities and Reeb Orbits
Abstract


2012-2013


 
DATE SPEAKER TITLE
September 20 Haojie Chen
University of Minnesota
"Type one generalized complex structures on four manifolds"
September 27 Robert Gulliver
University of Minnesota
"Branch points of area-minimizing projective planes"
October 4 Conan Leung
The Chinese University of Hong Kong
"Mirror Symmetry"
October 9 Hyunjoo Cho
University of Rochester
"Almost contact structures on 7-manifolds with G_2-structures"
November 1
No seminar this week

November 8 Anar Akhmedov
University of Minnesota
Construction of symplectic 4-manifolds via Luttinger surgery
November 15 Daniel Selahi Durusoy
Michigan State University
Remarks on the Crowell state sum model for the Alexander polynomial
November 20 Loredana Lanzani
University of Arkansas
The Cauchy Integral in C^n
Abstract
November 22
No Seminar - Thanksgiving

December 11 Olguta Buse
Indiana University Purdue University Indianapolis
Flexibility of symplectic ellipsoids in dimension four and higher
Abstract
December 13 David Favero
University of Vienna
Variation of Geometric Invariant Theory Quotients and Derived Categories
Abstract
February 14 Weiwei Wu
Michigan State University
Exact Lagrangians in $A_n$ Singularities
Abstract
March 7 Matthew Borman
University of Chicago
Relative symplectic packing and geodesic flow
Abstract
March 12 Shu-Cheng Chang
National Taiwan University
The torsion flow in a closed strictly pseudoconvex CR 3-manifold
Abstract
March 21 No Seminar - Spring Break


March 28 Yusuf Gurtas
Queensborough CUNY
Lantern relations and rational blow-down
April 11 Mustafa Kalafat
Tunceli University / Michigan State University
Topology of G_2 manifolds
Abstract
April 12 Jingyi Chen
University of British Columbia
A Bernstein type theorem for entire Willmore graphs
Abstract
April 25 Vlad Markovic
Caltech
Homology of curves and surfaces in hyperbolic 3-manifolds
Abstract
May 7 Yat-Sun Poon
UC Riverside
Deformation of Holomorphic Poisson Structures as Generalized Complex Manifolds
May 9 Luca Capogna
IMA
Smoothness of isometries between sub-Riemannian manifolds


2011-2012


 
DATE SPEAKER TITLE
September 22 Mehdi Lejmi
University of Minnesota
Extremal Kähler metrics
Abstract
September 29 Gang Liu
University of Minnesota
"3-manifolds with nonnegative Ricci curvature"
Abstract
October 13 Weiwei Wu
University of Minnesota
"On the homotopy type of symplectomorphism groups of non-compact symplectic manifolds"
October 18 Weiyi Zhang
University of Michigan
Negative curves on four dimensional almost complex manifolds
October 21 (Friday, 2:30, VINCENT HALL 207) Brian White
Stanford University
Densities of minimal cones
October 27 Mehdi Lejmi
University of Minnesota
Hermitian scalar curvature as a moment map
November 3 Zhongtao Wu
Caltech
Seifert fibered surgery
Abstract
November 10 Bulent Tosun
Georgia Tech
" Legendrian and transverse knots in cabled knot types"
Abstract
November 15 Daniel Ruberman
Brandeis University
An index theorem for end-periodic operators
Abstract
November 15 (Note Special Time: 2.30pm, 570 Vincent Hall) Weimin Chen
University of Massachusetts - Amherst
Seiberg-Witten invariants of 3-orbifolds and non-Kähler surfaces
November 24
No Seminar - Thanksgiving

December 8 Anar Akhmedov
University of Minnesota
"Symplectic Calabi-Yau 6-Manifolds"
Abstract
January 19 Robert Lipshitz
Columbia University
Colloquium talk "What is Khovanov the homology of?"
January 26 Lan-Hsuan Huang
Columbia University
Colloquium talk "Positive mass theorems and scalar curvature problems"
January 30 - February 1 Second Abel Conference: A Mathematical Celebration of John Milnor


February 9 Mehdi Lejmi
University of Minnesota
Deformations of extremal almost-Kähler metrics
February 16 Caner Koca
Stony Brook University
Weyl Energy and Kahler Metrics
Abstract
February 23 Gang Liu
University of Minnesota
Compact Kähler manifolds with nonpositive bisectional curvature
March 8 Weiwei Wu
University of Minnesota
Non-displaceable Lagrangian torus in semi-toric systems
March 15
No Seminar - Spring Break

March 29 Gunter Uhlmann
University of California Irvine / University of Washington
Inverse Problems and Geometry
April 5 Mikio Furuta
University of Tokyo
Pontrjagin-Thom construction and non-linear Fredholm theory
April 12 Mikio Furuta
University of Tokyo
Refined Seiberg-Witten invariant
April 17 Zhiqin Lu
University of California, Irvine
Some new development of the normal scalar curvature inequality
Abstract
April 24 Mikio Furuta
University of Tokyo

Pin(2)-monopole equations
April 26 Josef Dorfmeister
North Dakota State University
CP^2 and GW-Invariants of Symplectic 4-Manifolds
Abstract
May 3 Daryl Cooper
University of California, Santa Barbara
On Convex Projective Manifolds and Cusps
Abstract


2010-2011

DATE SPEAKER TITLE
September 23 Weiwei Wu
University of Minnesota
"Lagrangian spheres, symplectic surfaces and symplectic mapping class groups"
Abstract
September 30 Ke Zhu
University of Minnesota
"Thick-thin decomposition of Floer trajectories and adiabatic gluing"
October 7 Siu-Cheong Lau
Hongkong Chinese University/Wisconsin
"SYZ mirror symmetry and open Gromov-Witten invariants of toric Calabi-Yau manifolds"
October 28 Ovidiu Munteanu
Columbia University
"Gradient Ricci Solitons"
Abstract
November 4 Giancarlo Urzua
University of Massachusetts, Amherst
"Arrangements of Riemann surfaces on complex surfaces"
Abstract
November 11 John Etnyre
Georgia Tech
"Tightness in contact metric manifolds"
Abstract
November 25
No Seminar - Thanksgiving

January 27 Jonathan Williams
UC Berkeley
A Reidemeister-Singer theorem for surface diagrams of smooth four-manifolds
Abstract
February 1 Li-Sheng Tseng
Harvard University
Cohomology on Symplectic Manifolds
Abstract
February 4 (FRIDAY) Hau-tieng Wu
Princeton University (Note Special Time: 1.25pm, 570 Vincent Hall)
Vector Diffusion Maps and the Connection Laplacian
Abstract
February 10 Sema Salur
University of Rochester
Manifolds with G_2 Holonomy and Contact Structures
Abstract
February 17 Cagri Karakurt
University of Texas
Knot Floer Homology and Contact Surgeries
Abstract
February 24 Sean Keel
University of Texas
Theta functions and Mirror symmetry for log Calabi-Yau Surfaces
Abstract
March 1 (ORDWAY LECTURES) Jun Li
Stanford University
A new class of virtual classes and its applications I
Abstract
March 8 (ORDWAY LECTURES) Jun Li
Stanford University
A new class of virtual classes and its applications II
Abstract
March 10 Azer Akhmedov
North Dakota State University
On discrete subgroups of diffeomorphism groups of 1-manifolds
Abstract
March 18
No Seminar - Spring Break

March 24 Gang Liu
University of Minnesota
Kahler manifolds with Ricci curvature lower bound
March 29 Jaigyoung Choe
Korean Institute for Advanced Study
Higher dimensional versions of the Enneper surface, catenoid and helicoid
Abstract
March 31 Jeremy Van-Horn Morris
AIM
Spinal Open Books and Symplectic Fillings
Abstract
April 7 Albert Todd
University of Rochester
The Moduli Space of Asymptotically Cylindrical Special Lagrangian Submanifolds
Abstract
April 21 Ke Zhu
University of Minnesota
Thin instantons in G2-manifolds and Seiberg-Witten invariants
May 24 Adriano Tomassini
University of Parma
On cohomological properties of almost-Kaehler structures

 

2009-2010

DATE SPEAKER TITLE
October 1 Sai Kee Yeung
Purdue University
"Classification of fake projective planes and its applications in geometry and topology"
October 8 Anar Akhmedov
University of Minnesota
"The geography of symplectic 4-manifolds" Part I
Abstract
October 15 Ren Guo
University of Minnesota
"Almost Fuchsian manifolds and Teichmuller distance"
Abstract
October 22 Anar Akhmedov
University of Minnesota
"The geography of symplectic 4-manifolds" Part II
Abstract
November 5 Ho, Chung-I
University of Minnesota
"Luttinger surgery and Kodaira dimension"
Abstract
November 12 Ke Zhu
Hongkong Chinese University
"Jet Evaluation Transversality of J-holomorphic Curves and Applications"
November 20 (Friday, 3:35, VINCENT HALL 206) Jon Wolfson
Michigan State University
"Remarks on a Geometric Flow"
November 26
No Seminar - Thanksgiving

December 3 Guoyi Xu
University of Minnesota
"Short-time existence of the Ricci flow on noncompact Riemannian manifolds"
Abstract
December 8 Ludmil Katzarkov
University of Miami
"Spectrum of Categories and Applications to Symplectic Topology "
Abstract
December 10 Changyou Wang
University of Kentucky
"Analysis of Dirac-harmonic maps"
Abstract
January 28 Gang Liu
University of Minnesota
On the local comparison theorem of volume for Kahler manifolds
Abstract
February 4 Helen Wong
Carleton College
Kauffman Bracket Skein Algebras and Quantum Teichmuller Space
February 11 Guoyi Xu
University of Minnesota
Harmonic mean curvature flow in Riemannian manifolds
February 18

No seminar this week

February 25

No seminar this week

March 4 Anar Akhmedov
University of Minnesota
Construction of exotic smooth structures
Abstract
March 11 Mark Hovey
Wesleyan University
Twisted K-theory and Spin^c manifolds
Abstract
March 18
Spring Break

March 25 Josef Dorfmeister
Leibniz University Hannover
Minimality of Symplectic Sums.
March 30 Sinem Celik Onaran
MSRI
Legendrian Knots in Contact Structures and Open Book Decompositions
Abstract
April 1 Weiyi Zhang
University of Minnesota
Nakai-Moishezon Theorem and Donaldson's question for almost complex structures on rational surfaces
Abstract
April 8 Selman Akbulut
Michigan State University
Cappell and Shaneson homotopy 4-spheres
Abstract
April 9 (Friday, 3:30, VINCENT HALL 313) Selman Akbulut
Michigan State University
The Dolgachev surface
Abstract
April 15 Adriano Tomassini
University of Parma
Some recent results in non-Kaehler geometry
April 22 Inanc Baykur
Brandeis University
Exotic smooth structures and knottings in dimension four
April 29 Robert Gompf
University of Texas
Constructing Stein manifolds topologically
Abstract
April 30 (VINCENT HALL 207) Lei Ni
University of California, San Diego
Manifolds with pinched flag curvature
Abstract
May 3 (Monday, 1:30, VINCENT HALL TBA) Yng-Ing Lee
Taiwan University
Special solutions to Lagrangian Mean Curvature Flow
Abstract
May 4 Robert Gompf
University of Texas
Locally Holomorphic Maps Yield Symplectic Structures
June 10 (Thursday, 1:25, VINCENT HALL 570) Banghe Li
Academy of Mathematics and System Science, Chinese Academy of Science
Topology related to Hilbert 15th problem




Seminars in the School of Mathematics.
e-mail: akhmedov@math.umn.edu