Past Seminars

Date	Speaker	Title/Abstract
Nov 15/18	Spiro Karigiannis,  University of Waterloo	A curious system of second order nonlinear PDEs for U(m)-structures on manifolds
Oct 25/18	Mehmetcik Pamuk, McMaster University	Arbitrarily large factorizations in mapping class groups
	Nikolai Saveliev, University of Miami	On the Frøyshov invariant and monopole Lefschetz number
Oct 18/18	Elizabeth Drellich, Swarthmore College	tba
Oct 4/18	Jesse Madnick McMaster University	tba
Sept 13/18	Tyrone Ghaswala McMaster University	Amalgamated free products of circularly ordered groups
Apr 27/18	Rita Gitik University of Michigan	A new algorithm in group theory
Apr 12/18	Elise Villella University of Pittsburgh	Virtual Gelfand-Zetlin polytopes
Apr 5/18	Yulan Qing University of Toronto	Loops with large twist get short along quasi-geodesics in $u$$t$$($$F^{}$${}_n$$)$
Mar 29/18	Andreas Arvanitoyeorgos University of Patras	Homogeneous geodesics and two-step homogeneous geodesics in homogeneous spaces
Mar 22/18	Patrick Naylor University of Waterloo	Surface bundles over surfaces
Mar 22/18	Erik Pedersen (University of Copenhagen):	Controlled algebra and topological data analysis
Mar 8/18	Giulio Tiozzo (University of Toronto):	Counting loxodromic elements
Feb 15/18	Kasia Jankiewicz McGill University	Cubical dimension of small cancellation groups
Feb 1/18	??? McMaster University	Perelman’s functionals on compact manifolds with isolated conical singularities
Jan 25/18	Matthias Nagel McMaster University	Surface systems and triple linking numbers
Jan 4/18	Dave Auckly Kansas State University	Stable equivalence of smoothly knotted surfaces
Dec 7/17	Tyrone Ghaswala University of Waterloo	Coverings, groupoids, and embedding braids in mapping class groups
Nov 30/17	David Duncan McMaster University	Some open problems in gauge theory, symplectic geometry, and low-dimensional topology
Nov 23/17	Christopher Davis University of Wisconsin at Eau Claire	Concordance of knots in homology spheres and the solvable filtration
Nov 17/17	Nikolai Saveliev University of Miami	On gauge theoretic invariants of homology S1×S3
Nov 9/17	Katherine Raoux Michigan State University	?-invariants for knots in rational homology spheres
Nov 2/17	Anja Randecker University of Toronto	On Loch Ness monsters and wild singularities – a Halloween-inspired introduction to infinite translation surfaces
Oct 26/17	Jonathan Hillman University of Sydney	Complements of closed hypersurfaces in S4
Oct 19/17	Matthias Nagel McMaster University	Concordance and the Gordon-Litherland lattice
Oct 12/17	George Dragomir McMaster University	Metric transforms yielding Gromov hyperbolic spaces
Oct 2/17	Klaus Kröncke University of Hamburg	Stability of ALE Ricci-flat manifolds under Ricci-flow
Sept 21/17	Hari Kunduri Memorial University of Newfoundland	Geometric inequalities for black hole initial data sets
Sept 14/17	Steven Boyer Département de mathématiques Université du Québec à Montréal	Branched Covers of Quasipositive Links and L-Spaces
April 6/17	McKenzie Wang Math & Stats Dept McMaster University	Some examples of ancient solutions to the Ricci flow
Mar 23/17	Panagiotis Giannioti Waterloo	Regularity theory for Type I  Ricci flows
Mar 30/17	Hans Boden McMaster University	Slice obstructions for virtual knots
Mar 16/17	Nima Anvari Math & Stats Dept McMaster University	Equivariant Rho-Invariants and Instanton Homology of Torus Knots
Mar 9/17	Gary Kennedy Ohio State	Topicalizing spherical varieties
Mar 2/17	Larry Siebenmann	Analyzing surface flows using trees and the Bendixson-Mather 2-disk
Feb 23/17	Chris Herald University of Nevada, Reno	Obtaining reduced Khovanov homology from traceless character varieties
Feb 16/17	Megumi Harada McMaster University	Newton-Okounkov bodies and integrable systems
Feb 9/17	Balazs Elek Cornell	Pizzas and Kazhdan-Lusztig atlases on toric surfaces
Feb 2/17	Tyrone Ghaswala Waterloo	Mapping class groups, coverings, braids and groupoids
Jan 25/17	Victor Mouquin University of Toronto	One some holomorphic Poisson structures related to geometric representation theory
Jan 19/17	Ali Aleyasin	The Calabi problem on edge-cone manifolds
Jan 12/17	Cagatay Kutluhan University of Buffalo	Filtering the Heegaard Floer contact invariant
Jan 5/17	George Dragomir McMaster University	On the existence of closed geodesics on compact developable orbifolds
Nov 18/16	Steffen Marcus College of New JerseySjuvon Chung Rutgers University	Fans of logarithmic structures (Joint with Algebra Seminar)Euler characteristics of cominuscule quantum $K$-theory
Nov 11/16	Doug Schultz Rutgers University	Lagrangian Floer theory in symplectic fibrations
Nov 4/16	Changliang Wang McMaster University	Stability of Riemannian manifolds with Killing spinors
Oct 21/16	Kristen Hendricks Michigan State University	Involutive Heegaard Floer homology
Sept 30/16	Alex Kuronya Budapest Univ. of Tech & Econ.Geoff Scott University of Toronto	Positivity of line bundles and equations defining projective varieties Lie Algebroids on Pinched S^1 Bundles
Oct 7/16	Maxime Fortier Bourque University of Toronto	The Teichmuller space of conformal pentagons
Sept 23/16	Naoki Fujita Tokyo Institute of Technology	Newton-Okounkov polytopes of Schubert varieties and folding method
Sept 16/16	Akos Nagy University of Waterloo	The Berry connection of the Ginzburg–Landau vortices
Mar 10/16	Grigorios Fournodavlos University of Toronto	Singular Ricci solitons and their stability under the Ricci flow
Mar 3/16	Matthias Nagel UQAM	Minimal genus in circle bundles over 3-manifolds
Feb 25/16	Hiraku Abe McMaster University	The cohomology of Hessenberg varieties and representations of symmetric groups
Feb 4/16	Iva Halacheva University of Toronto	The Gromov width of coadjoint orbits of the symplectic group
Jan 14/16	David Rosenthal St. John’s	Large scale geometry of groups
Nov 26/15	Peter Crooks University of Toronto	Minimal nilpotent Hessenberg varieties
Nov 20/15	Martha Precup Northwestern	The Betti numbers of parabolic Hessenberg varieties
Nov 12/15	Long Li McMaster Universilty	On conic constant scalar curvature Kaehler(cscK) metrics
Nov 5/15	John Shareshian Washington St. Louis	Applying discrete Morse theory to complexes of graphs
Oct 29/15	Alejandro Betancourt de la Parra Oxford	Cohomogeneity one Ricci solitons
Oct 22/15	Tatsuya Horiguchi McMaster University	The equivariant cohomology rings of regular nilpotent Hessenberg varieties in Lie type A
Oct 8/15	Federico Galetto McMaster University	Tangent schemes of determinantal varieties
Oct 1/15	David Duncan McMaster University	On the critical values of the Chern-Simons functional
Sept 24/15	Jeremy Lane University of Toronto	Convexity and the Thimm Trick
Sept 17/15	Elisheva Adina Gamse Northeastern	Vanishing relations in the cohomology of the moduli space of parabolic bundles
Sept 10/15	Alexander Caviedes Castro Tel Aviv	Idempotents and symmetries on QH(G(k, n))
Sept 3/15	Chris Cornwell UQAM	Understanding character varieties of knot complements and 2-fold branched covers through the cord ring
May 20/15	Ergun Yalcin Bilkent University	Group actions on spheres with rank one isotropy
May 19/15	Robert Oliver University of Paris 13	Automorphisms of p-completed classifying spaces
May 19/15	Sune Precht Reeh Massachusetts Institute of Technology	Characteristic idempotents and fusion systems
Apr 9/15	Chris Herald University of Nevada, Reno	A Lagrangian-Floer theory in the pillowcase arising from traceless representations of knot groups
Mar 19/15	Laurent Siebenmann Orsay	Chambers and trees describing general foliations of the plane
Mar 12/15	Ergun Yalcin McMaster University	Rank Threee p-Group Actions on Products of Spheres
Feb 26/15	Long Li McMaster University	On the convexity of the Mabuchi energy functional along geodesics
Feb 12/15	Steven Gindi University of Waterloo	Holomorphic Twistor Spaces and Bihermitian Geometry
Feb 5/15	Jihyeon Jessie Yang McMaster University	Toric desingularization of Gelfand-Zetlin toric variety
Jan 29/15	Matt Luther McMaster University	Continuous Model Theory and Flat Subspaces
Jan 22/15	Cynthia Curtis The College of New Jersey	The SL(2,C) Casson invariant for knots and the A-hat polynomial
Jan 15/15	Alyson Hildum McMaster University	Topological 4-manifolds with RAAG fundamental groups
Dec 18/14	Andreas Arvaniteorgeous University of Patras & Tufts University	Progress on homogeneous Einstein manifolds
Dec 4/14	Ronald Fintushel Michigan State University	Pinwheels and fake projective planes
Nov 27/14	Thomas Murphy California State Fullerton	Complex Riemannian foliations of Kaehler manifolds
Nov 20/14	Romina Arroyo University of Cordoba, Argentina	Homogeneous Ricci solitons and the Alekseevskii conjecture in low dimensions
Nov 13/14	Eric Harper McMaster University	Virtual knots, almost classical knots, and their Alexander lnvariants
Nov 6/14	Alejandro Adem University of British Columbia	Homotopy Group Actions and Group Cohomology
Oct 30/14	Oleg Chterental University of Toronto	Virtual Braids and Virtual Curve Diagrams
Oct 23/14	Shuguang Wang University of Missouri	A compactification of the foliated ASD moduli spaces
Oct 16/14	Nikolai Saveliev University of Miami	Instanton knot homology and equivariant gauge theory
Oct 2/14	Nima Anvari McMaster University	Cyclic Group Actions on Contractible Four-Manifolds
Sep 25/14	Ergun Yalcin Bilkent University	Constructing finite group actions on homotopy spheres
Sep 18/14	Long Li McMaster University	Abstract
Apr 3/14	Shahab Kalantari Amirkabir University of Technology	Asymptotic Resemblance: A new approach to define a large scale structure on a set
Mar 27/14	Peng Lu University of Oregon	Shrinking Ricci solitons
Mar 20/14	Blake Winter University of Buffalo	Welded Knots and Ribbon Knots
Mar 13/14	Eric Harper McMaster University	The Virtual Knot Group and its Alexander Invariants
Mar 6/14	Thomas Murphy McMaster University	Spectral geometry of toric Einstein manifolds
Jan 30/14	Dror Bar-Natan University of Toronto	Trees and Wheels and Balloons and Hoops
Jan 16/14	Laurent Siebenmann Orsay	Vignettes from the rise of differential topology
Dec 5/13	Diarmuid Crowley Max Planck Institute, Bonn	The topology of Stein fillable contact manifolds in higher dimensions
Nov 28/13	Chris Cappadocia McMaster University	The weak hyperbolic dimension of metric spaces
Nov 14/13	Thomas Murphy McMaster University	Rigidity results for Hermitian-Einstein manifolds
Nov 7/13	Yun-xia Chen University of Waterloo	ADE bundles over complex surfaces
Oct 31/13	Alyson Hildum McMaster University	The minimum b_2 problem for right-angled Artin groups
Oct 17/13	Frederick  Fong Brown University	Kahler-Ricci flow and its singularity analysis
Oct 10/13	Enxin Wu Western University	A homotopy theory for diffeological spaces
Oct 3/13	Karene Chu Massachusetts Institute of Technology	Classification of flat virtual pure tangles
Sep 19/13	Anna Bertiger University of Waterloo	The action of Sp(n) on complex flags
Sep 12/13	Bruce Williams University of Notre Dame	Localizations and algebraic K-theory
Apr 25/13	Masoud Khakhali University of Western Ontario	Spectral zeta functions, scalar curvature, and Gauss-Bonnet theorems in noncommutative geometry
Apr 4/13	Nima Anvari McMaster University	Equivariant gauge theory and four-manifolds
Mar 28/13	Reto Mueller Imperial College, London	Dynamical stability and instability of Ricci-flat metrics
Mar 21/13	Saso Strle University of Ljubljana	Unknotting number and concordance
Mar 14/13	Alexander Kolpakov Vanderbilt University	Geometric and combinatorial optimality of the hyperbolic 24-cell
Mar 7/13	Robert Haslhofer NYU	Quantitative stratification and the regularity of mean curvature flow
Feb 28/13	Mikhail Mazin SUNY	Topology and combinatorics of certain compactified Jacobians
Feb 14/13	David Duncan Rutgers University	A compactness result for the quilted Atiyah–Floer conjecture
Feb 7/13	Eric Harper McMaster University	Akbulut corks and non-trivial involutions on instanton Floer homology
Jan 31/13	Peter Samuelson University of Toronto	Skein modules and the double affine Hecke algebra
Jan 24/13	Tomoo Matsumura Korea Advanced Institute of Science and Technology (KAIST)	Schubert calculus of weighted Grassmannians
Jan 17/13	Maria Buzano McMaster University	Ricci flow on homogeneous spaces
Jan 10/13	Aaron Smith University of Waterloo	The higher Riemann–Hilbert correspondence and extensions
Nov 29/12	Ruxandra Moraru University of Waterloo	Stable bundles on complex nilmanifolds
Nov 22/12	David Rosenthal St. John’s University	On the coarse asymptotic dimension of groups
Nov 15/12	William Wylie Syracuse University	Warped product rigidity
Nov 8/12	Daniel Ruberman Brandeis University	Embeddings of non-orientable surfaces in 4-manifolds
Nov 1/12	Jihyeon Jessie Yang McMaster University	“Limits” of schemes
Oct 25/12	Kate Petersen Florida State University	The Euclidean algorithm and primitive roots
Oct 11/12	Shintaro Kuroki University of Toronto	Root systems of torus graphs and characterization of extended actions of torus manifolds
Oct 4/12	Adam Clay UQAM	Left-orderability, foliations, L-spaces and graph manifolds
Sep 20/12	Kristin Shaw University of Toronto	Obstructions to approximating tropical curves in surfaces
Sep 13/12	Owen Baker McMaster University	Hyperbolic group boundaries and Cannon-Thurston maps

2003-2012