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Geometry and Topology at Georgia Tech

July 26 through July 30, 2021

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Research Seminar

The Geometry and Topology Research Seminar regularly meets on Monday at 2:00 in Skiles 006 unless otherwise indicated.

Spring 2023

The Geometry and Topology Seminar will sometimes be run in-person and sometimes on-line. If the title has an * by it, then it will be an on-line seminars and a link will be sent to the geometry-topology group before each seminar.  In-person seminars will be in Skiles 006. Talks start at 2:00.

Date Title Speaker Institute
Apr 24 TBA Francis Bonahon USC
Apr 17 Joint Seminar at GT
Start at 4:30
Apr 17 Joint Seminar at GT
Start at 3:00
Effie Kalfagianni MSU
Apr 10 TBA Adam Sikora SUNY Buffalo
Apr 3
Mar 27 TBA Anup Poudel Ohio State
Mar 20 No Seminar: Spring Break
Mar 17 Joint Seminar at GT
Start at 4:30, note talk on Friday
Mar 17 Joint Seminar at GT
Start at 3:00, note talk on Friday
Mar 17 TBA Luca Di Cerbo University of Florida
Mar 15 TBA Matt Day U Arkansas
Mar 13 TBA Alexander Thomas  U. Heidelberg
Mar 6
Feb 27
Feb 20 TBA Angela Wu LSU
Feb 13 Joint Seminar at UGA
Feb 6 TBA Tam Cheetham-West Rice University
Jan 30 Higher Complex Structures and Hitchin Components Alex Nolte Rice University/Georgia Tech
Jan 23 On the homology of Torelli groups Dan Minahan Georgia Tech
Jan 16 No Seminar: MLK Day
Jan 9 A Tale of Two Theorems of Thurston Dan Margalit Georgia Tech

Fall 2022

The Geometry and Topology Seminar will sometimes be run in-person and sometimes on-line. If the title has an * by it, then it will be an on-line seminars and a link will be sent to the geometry-topology group before each seminar.  In-person seminars will be in Skiles 006. Talks start at 2:00.

Date Title Speaker Institute
Dec 12 d-Pleated surfaces and their coordinates Giuseppe Martone Yale
Dec 5 Multisections, the pants complex, and Weinstein manifolds Gabe Islambouli UC, Davis
Nov 28 Intersection number and intersection points of closed geodesics on hyperbolic surfaces by Tina Torkaman Tina Torkaman Harvard
Nov 21 Naturality of Legendrian LOSS invariant under positive contact surgery Shunyu Wan U Virginia
Nov 16 Fillability of Contact Structures on the 3-manifolds obtained by surgeries on the trefoil knot
UGA Boyd 322, 4:30 (Wednesday)
Nur Saglam Ga Tech
Nov 16 Obstructing Reducible Surgeries: Slice Genus and Thickness Bounds
UGA Boyd 322, 3:00 (Wednesday)
Robert DeYoso U. Iowa
Nov 14 Graph Analogues of Big Mapping Class Groups: Coarse Geometry George Domat Rice University
Nov 7 Does the Jones polynomial of a knot detect the unknot? A novel approach via braid group representations and class numbers of number fields (on line) Amitesh Datta Princeton
Oct 31 Wild Rose, Narcissus and other Elliptic Flowers: a new class of billiards with surprising properties. Leonid Bunimovich Ga Tech
Oct 24 Diagrams for contractible spaces of 4-manifolds
Start at 4:30
Dave Gay UGA
Oct 24 An A-infinity category from instantons
Start at 3:00
Sherry Gong Texas A&M
Oct 17 No Seminar: Fall Break
Oct 10 Asymptotics of surface group representations along rays Mike Wolf Ga Tech
Oct 3 Geography of surface bundles over surfaces Inanc Baykur U Mass
Sept 26 The stable cohomology of the level-l subgroup of the mapping class group
UGA Boyd 322, 4:30
Andy Putman Notre Dame
Sept 26 Obstructions to Reversing Lagrangian Surgery
UGA Boyd 322, 3:00
Orsola Capovilla-Searle UC, Davis
Sept 19 Hyperbolic models for CAT(0) spaces Abdul Zalloum University of Toronto
Sept 12 Families of Lefschetz Fibrations via Cyclic Group Actions Nur Saglam Ga Tech
Sept 5 No Seminar: Labor Day
Aut 29 Combinatorial Surgery Graphs on Unicellular Maps Abdoul Karim Sane Ga Tech
Aug 22 Mapping Class Groups of Sliced Loch Ness Monsters Ryan Dickmann Ga Tech

Spring 2022

The Geometry and Topology Seminar will sometimes be run in-person and sometimes on-line. If the title has an * by it, then it will be in-person in Skiles 006. For on-line seminars a link will be sent to the geometry-topology group before each seminar.

Date Title Speaker Institute
Apr 25 Strict hyperbolization and special cubulation Ruffoni, Lorenzo Tufts University
Apr 18 Relating the untwisting and surgery description numbers* Samantha Allen UGA
Apr 11 Upsilon invariant for graphs and homology cobordism group of homology cylinders* Akram Alishahi UGA
Apr 4 Connected sum formula of embedded contact homology* Luya Wang Berkeley
Mar 29 Complex Ball Quotients and New Symplectic 4-Manifolds with Nonnegative Signatures*
Time 3:00pm, note this talk is on Tuesday
Sumeyra Sakalli University of Arkansas
Mar 28 Quasi-morphisms on Surface Diffeomorphism groups Jonathan Bowden Universität Regensburg
Mar 21 No Seminar: Spring Break
Mar 14 The Grand Arc Graph — A “curve graph” for infinite-type surfaces Assaf Bar-Natan University of Toronto
Mar 7 An invariant for families of contact structures in monopole Floer homology* Juan Muñoz-Echániz Columbia University
Feb 28 Finite-order mapping classes of del Pezzo surfaces Seraphina Lee University of Chicago
Feb 21 Symplectic Lefschetz fibrations, rational blowdowns, and small exotic 4-manifolds* Jonathan Simone Georgia Tech
Feb 14 Abelian cycles in the homology of the Torelli group Erik Lindell University of Stockholm
Feb 7 Stable commutator length on big mapping class groups Elizabeth Field University of Utah
Jan 31 Stein property of complex-hyperbolic Kleinian groups Subhadip Dey Yale university
Jan 24 The diffeomorphism group of a 4-manifold Danny Ruberman Brandeis University
Jan 17 No Seminar: MLK Day

Fall 2021

The Geometry and Topology Seminar will sometimes be run in-person and sometimes on-line. If the title has an * by it, then it will be in-person in Skiles 006. For on-line seminars a link will be sent to the geometry-topology group before each seminar.

Date Title Speaker Institute
Nov 29 Applications of contact geometry to 3-dimensional Anosov dynamics Federico Salmoiraghi Technion
Nov 22 Open
Nov 15 Detection results in link Floer homology * Subhankar Dey University of Alabama
Nov 8 A Fox-Milnor Condition for 1-Solvable Links * Shawn Williams Rice
Nov 1 Classical and new plumbings bounding contractible manifolds and homology balls Oğuz Şavk Boğaziçi University
Oct 25 Open
Oct 18 On amphichirality of symmetric unions Ceren Kose U Texas, Austin
Oct 11 No Seminar: Fall Break
Oct 4 Invariants of rational homology 3-spheres from the abelianization
of the mod-p Torelli group
Ricard Riba Garcia UAB Barcelona
Sept 27 Invariance of Knot Lattice Homology Seppo Niemi-Colvin Duke University
Sept 20 Mitsumatsu’s Liouville domains are stably Weinstein * Austin Christian Ga Tech
Sept 13 A curve graph for Artin groups Rose Morris-Wright UCLA
Sept 6 No Seminar: Labor Day
Aug 30 Chi-slice 3-braid links * Jon Simone Ga Tech

Spring 2021

The Geometry and Topology Seminar will be held online this semester due to COVID-19. Please contact John Etnyre for the link to the seminars if you are interested.

Date Title Speaker Institute
Jul 7 Brached cyclic covers and L-spaces Hannah Turner U Texas, Austin
May 3 Normal surface theory and colored Khovanov homology Christine Ruey Shan Lee University of South Alabama
Apr 26 On the length of the shortest closed geodesic on positively curved 2-spheres Franco Vargas Pallete Yale University
Apr 19 3-manifolds that bound no definite 4-manifold Marco Golla Université de Nantes
Apr 12 Diffeomorphisms of the 4-sphere, Cerf theory and Montesinos twins David Gay University of Georgia
Apr 5 Right-veering open books and the Upsilon invariant Diana Hubbard Brooklyn College
Mar 29 Topology of the Shift Locus via Big Mapping Class Groups Yan Mary He University of Toronto
Mar 22 Infinite-type surfaces and the omnipresent arcs Tyrone Ghaswala CIRGET, Université du Québec à Montréal
Mar 15 Big mapping class groups and rigidity of the simple circle Lvzhou Chen UT Austin
Mar 8 Open
Mar 1 Open
Feb 22 Julia sets with Ahlfors-regular conformal dimension one InSung Park Indiana University Bloomington
Feb 15 No Seminar: Presidents Day
Feb 8 Braids, quasimorphisms, and slice-Bennequin inequalities Peter Feller ETH Zurich
Feb 1 Symmetric knots and the equivariant 4-ball genus Ahmad Issa University of British Columbia
Jan 25 The asymptotic dimension of big mapping class groups Yvon Verberne Georgia Tech
Jan 18 No Seminar: MLK Day
Jan 11 Identifying Dehn Functions of Bestvina–Brady Groups From Their Defining Graphs Yu-Chan Chang Emory

Fall 2020

The Geometry and Topology Seminar will be held online this semester due to COVID-19. Please contact John Etnyre for the link to the seminars if you are interested.

Date    Title Speaker Institute
Nov 23 Taut foliations and Dehn surgery along positive braid knots Siddhi Krishna Georgia Tech
Nov 16 RAAGs in MCGs Ian Runnels University of Virginia
Nov 9 A Combinatorial Description of the knot concordance invariant epsilon Hakan Doga University at Buffalo
Nov 2 Knots and Links in overtwisted contact structures Rima Chatterjee LSU
Oct 26 Embedding closed hyperbolic 3-manifolds in small volume hyperbolic 4-manifolds Michelle Chu University of Illinois
at Chicago
Oct 19 Ribbon homology cobordism Shea Vela Vick LSU
Oct 12 A contact invariant from bordered Heegaard Floer homology Ina Petkova Dartmouth
Oct 5 Open
Sep 28 SL3 Skein Algebras of Surfaces Vijay Higgins UC Santa Barbara
Sep 21 The embedded contact homology of prequantization bundles Morgan Weiler Rice
Sep 14 L-space surgeries on 2-component L-space links Beibei Liu Georgia Tech
Sept 7 No Seminar: Labor Day
Aug 31 Triple linking and Heegaard Floer homology Allison Moore Virginia Commonwealth
University
Aug 24 Equivalence relations on 4 manifolds Mark Powell Durham University
Aug 17 SU(2) representations for toroidal homology spheres Tye Lidman NCSU

Spring 2020

The Geometry and Topology Seminar  has been cancelled starting March 30 due to the shutdown of on campus activities related to COVID-19.

Date Title Speaker Institute
April 20 TBD Michelle Chu University of Illinois at Chicago
April 13 TBD Maggie Miller Princeton
April 6 TBD
Time: 3:30
Allison Moore Virginia Commonwealth University
April 6 TBD Shelly Harvey Rice
Mar 30 TBD Anthony Conway MPI
Mar 23 Cancelled — —
Mar 16 No Seminar: Spring Break
Mar 9 Satellite operations and knot genera Allison Miller Rice
The dihedral genus of a knot
UGA, Boyd 221, 4:00
Patricia Cahn Smith College
Mar 2 Stein domains in complex two space with prescribed boundary
UGA, Boyd 221, 2:30
Bulent Tosun University of Alabama
Feb 24 From veering triangulations to link spaces and back again Henry Segerman Oklahoma State University
Feb 17 Spaces of trees and fatgraphs for string topology and moduli spaces Kate Poirier CUNY – City College of Technology
Feb 13 The Frohman-Kania-Bartoszynska invariant is the 3D index (note special date) Stavros Gafoufalidis SUSTECH and MPI Bonn
Feb 10 Brieskorn spheres bounding rational balls
Time: 3:30
Kyle Larson UGA
Feb 10 Homotopy invariants of homology cobordism and knot concordance Kent Orr Indiana University
Feb 3 Annular Rasmussen invariants: Properties and 3-braid classification Gage Martin Boston College
Jan 27 The coalgebra of singular chains and the fundamental group Manuel Rivera Purdue University
Jan 20 No Seminar: MLK Day
Branched covers bounding rational homology balls
UGA, Boyd 221, 4:00
JungHwan Park Ga Tech
Jan 13 Knot Floer homology and cosmetic surgeries
UGA, Boyd 221, 2:30
Jonathan Hanselman Princeton University
Jan 6 Localization in Khovanov homology  Melissa Zhang UGA

Fall 2019

Date Title Speaker Institute
Dec 9 Classifying contact structures on hyperbolic 3-manifolds
Skiles 202, Time 2:30
James Conway UC, Berkeley
Dec 2 Residual Torsion-Free Nilpotence and Two-Bridge Knot Groups Jonathan Johnson UT, Austin
Nov 25 Classifying incompressible surfaces in hyperbolic 4-punctured sphere mapping tori Sunny Xiao Brown University
Nov 18 A generalization of Rasmussen’s invariant, with applications to surfaces in some four-manifolds
UGA, Boyd 303, 4:00
Marco Marengon UCLA
Nov 18 Concordance invariants from branched coverings and Heegaard Floer homology
UGA, Boyd 221, 2:30
Antonio Alfieri UBC
Nov 11 Seminar Cancelled
Nov 4 Koszul duality and Knot Floer homology Tom Hockenhull University of Glasgow
Oct 28 Connected Floer homology of covering involutions Sungkyung Kang Chinese University of Hong Kong
Oct 21 The geometry of subgroup combination theorems Jacob Russell CUNY Graduate Center
Oct 14 No Seminar: Fall Break
Oct 7 Upper bounds on the topological slice genus via twisting operations
Time: 3:30
Duncan McCoy UQAM
Oct 7 Smooth 4-Manifolds and Higher Order Corks Paul Melvin Bryn Mawr College
Sept 30 Surface bundles and complex projective varieties Corey Bregman Brandeis University
Sept 23 Intrinsic Combinatorics for the Space of Generic Complex Polynomials Michael Dougherty Colby College
Sept 16 The “generating function” of configuration spaces, as a source for explicit formulas and representation stability Nir Gadish Massachusetts Institute of Technology
Sept 9 Link Concordance and Groups Miriam Kuzbary Georgia Tech
Sept 2 No Seminar: Labor Day
Aug 26 Dynamical Mapping Classes Jasmine Powell University of Michigan
Aug 13 Group Actions and Cogroup Coactions in Simplicial Sheaves Jonathan Beardsley Georgia Tech

Spring 2019

Date Title Speaker Institute
May 31 Factorization homology: sigma-models as state-sum TQFTs David Ayala Montana State University
May 29 Rational cobordisms and integral homology Paolo Aceto University of Oxford
May 15 Flag moduli spaces and Legendrian surfaces Roger Casals UC Davis
May 13 Translational scissors congruence Inna Zakharevich Cornell
Apr 22 On the topological expressiveness of neural networks Eli Grigsby Boston College
Apr 22 Simply-connected, spineless 4-manifolds Adam Levine Duke University
Apr 15 Doubly slice knots and L^2 signatures Patrick Orson Boston College
Apr 8 Heegaard Floer homology and non-zero degree maps Tye Lidman NCSU
Apr 3 Moebius bands in S^1xB^3 and the square peg problem Peter Feller ETH Zurich
Apr 1 Embedding Seifert fibered spaces in the 4-sphere Ahmad Issa University of Texas
Mar 25 A surface construction for colored Khovanov homology
UGA, Boyd 328, 4:00 pm
Christine Ruey Shan Lee University of South Alabama
Mar 25 A spectral sequence from Khovanov homology to knot Floer homology
UGA, Boyd 328, 2:30 pm
Nathan Dowlin Dartmouth
Mar 18 No Seminar: Spring break
Mar 11 Using 2-torsion to obstruct topological isotopy Hannah Schwartz Bryn Mawr
Mar 4 The nu+ equivalence class of genus one knots Kouki Sato University of Tokyo
Feb 25 Knots in homology spheres, concordance, and crossing changes
Time: 3:30
Chris Davis U Wisconsin Eau Claire
Feb 25 Knot Traces and the Slice Genus Lisa Piccirillo UT Austin
Feb 18 Heegaard Floer and the homology cobordism group Jen Hom Georgia Tech
Feb 11 Simplification of singularities of Lagrangian and Legendrian fronts Daniel Álvarez-Gavela IAS
Feb 1 Acylindrical hyperbolicity of non-elementary convergence groups Bin Sun Vanderbilt
Jan 28 Link Floer homology and the stabilization distance
UGA, Boyd 328, 4:00 pm
Ian Zemke Princeton University
Jan 28 Knot Concordances in S^1 x S^2 and Constructing Akbulut-Ruberman Type Exotic 4-Manifolds
UGA, Boyd 328, 2:30 pm
Eylem Yildiz Michigan State University
Jan 21 No Seminar: MLK Day

Fall 2018

Date Title Speaker Institute
Dec. 3 Maximal Weinstein domains Oleg Lazarev Columbia University
Nov 19 The arithmetic of orientation-reversing mapping classes Livio Liechti Paris-Jussieu
Nov 16 Counting incompressible surfaces and the 3D-index Stavros Garoufalidis Georgia Tech & MPI
Nov 12 Affine Grassmannians in motivic homotopy theory Tom Bachmann MIT
Nov 5 A family of freely slice good boundary links Min Hoon Kim Korea Institute for Advanced Study
Oct 29 Stable homotopy invariants for links 
UGA, Boyd 328, 4:00 pm
Patrick Orson Boston College
Oct 29 A ribbon obstruction and derivatives of knots
UGA, Boyd 328, 2:30 pm
JungHwan Park Georgia Tech
Oct 22 Genuine Equivariant Operads Luis Alexandre Pereira Georgia Tech
Oct 15 The transverse invariant and braid dynamics Lev Tovstopyat-Nelip Boston College
Oct 8 No Seminar: Fall Break
Oct 1 The ribbon genus of a knotted surface
Time 3:30
Jason Joseph UGA
Oct 1 A contact Fukaya category Lenny Ng Duke University
Sept 24 Link Concordance and Groups Miriam Kuzbary Rice University
Sept 17 Non-isotopic embeddings of contact manifolds John Etnyre Georgia Tech
Sept 10 Rational cobordisms and integral homology JungHwan Park Georgia Tech
Sept 3 No Seminar: Labor Day
Aug 27 Khovanov homology via immersed curves in the 4-punctured sphere
UGA, Boyd 328, 4:00 pm
Artem Kotelskiy Indiana University
Aug 27 Homological knot invariants and the unknotting number
UGA, Boyd 328, 4:00 pm
Akram Alishahi Columbia University

Spring 2018

coming soon

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