Geometry and Topology Seminar
The Geometry and Topology Seminar normally meets on Wednesday
afternoons at 4pm in PHSC 809. When the speaker is from outside OU,
we have tea at 3:30pm in PHSC 424.
For more information about the seminar, contact
Hung Tran.
Spring 2020
January 22
4:00 PM PHSC 809 |
Jing Tao
University of Oklahoma | Shape of the Thurston norm ball |
January 29
4:00 PM PHSC 809 |
Jorge Lauret
Universidad Nacional de Córdoba, Argentina | The beta operator of a homogeneous space revisited |
February 12
4:00 PM PHSC 809 |
Hung C. Tran
University of Oklahoma | Divergence of finitely presented groups |
February 19
4:00 PM PHSC 809 |
Emily Stark
University of Utah | Action rigidity for free products of hyperbolic manifold groups |
February 26
4:00 PM PHSC 809 |
Ricardo Mendes
University of Oklahoma | The isometry group of spherical quotients |
March 4
4:00 PM PHSC 313 |
Lawrence Mouillé
University of California, Riverside | Positive intermediate Ricci curvature with torus symmetries |
March 11
4:00 PM PHSC 809 |
Derrick Wigglesworth
University of Arkansas | Algorithmic Detection of Geometric Automorphisms of Free Groups |
April 8
4:00 PM Zoom |
Dustin Gaskins
University of Oklahoma | Einstein Homogeneous Spaces |
April 15
4:00 PM Zoom |
Jordan Danser
University of Oklahoma | Filiform Ricci Solitons |
April 22
4:00 PM Zoom |
Mary Cook
Arizona State University | The holonomy group under the Ricci flow |
Fall 2019
August 28
4:00 PM PHSC 809 |
Hung C. Tran
University of Oklahoma | The local to global property for Morse quasi-geodesics |
September 4
4:00 PM PHSC 809 |
Leonard Rubin
University of Oklahoma | Dimension Theory, Extension Theory, and a Product-Suspension Result |
September 11
4:00 PM PHSC 809 |
Jing Tao
University of Oklahoma | A tale of two metrics |
September 25
4:00 PM PHSC 809 |
Ricardo Mendes
University of Oklahoma | Convex Algebraic Geometry of Riemannian Curvature Operators |
October 2
4:00 PM PHSC 809 |
Christopher Cashen
University of Vienna | Cogrowth for group actions with strongly contracting elements |
October 23
4:00 PM PHSC 809 |
Boris Apanasov
University of Oklahoma | "Siamese twins construction" in Teichmüller space of hyperbolic 3-manifolds |
November 6
4:00 PM PHSC 809 |
Leonard R. Rubin
University of Oklahoma | Extension Theory: A Product\Suspension Theorem |
Show semesters preceding Fall 2019
Spring 2019
March 6
3:45 PM PHSC 809 |
Thomas Lane
University of Oklahoma | Ricci Flow on Homogeneous Spaces |
March 13
3:45 PM PHSC 809 |
Jason DeVito
University of Oklahoma | Even dimensional rational homology spheres admitting double disk bundle decompositions are homeomorphic to spheres |
April 3
3:45 PM PHSC 809 |
Justin Malestein
University of Oklahoma | Some Linear Representations of the Automorphism Group of a Right-Angled Artin Group |
Fall 2018
September 5
3:45 PM PHSC 809 |
Leonard R. Rubin
University of Oklahoma | Countable extension dimension |
September 19
3:45 PM PHSC 809 |
Jason DeVito
University of Oklahoma and UT Martin | Rational spheres admitting a double disc bundle decomposition |
October 3
4:00 PM PHSC 809 |
Miguel Domínguez
ICMAT, Madrid | On isoparametric hypersurfaces in noncompact symmetric spaces |
October 31
3:45 PM PHSC 809 |
Andrew Lutz
University of Oklahoma | Almost Isotropic Kähler Manifolds |
November 14
3:45 PM PHSC 809 |
Cory Wilson
University of Oklahoma | Totally Geodesic Orbits of Isometries |
December 5
3:45 PM PHSC 809 |
Andy Miller
University of Oklahoma | Right angled Coxeter groups and Diophantine quadratic forms |
Spring 2018
January 24
3:45 PM PHSC 809 |
Jing Tao
University of Oklahoma | Effective quasimorphisms on right-angled Artin groups |
January 31
3:45 PM PHSC 809 |
Max Forester
University of Oklahoma | Genus bounds in right-angled Artin groups |
February 14
4:00 PM PHSC 809 |
David E. Rowe
Mainz University | Max Dehn and Helmut Kneser in 1929 - or - What went wrong with Dehn's Lemma? |
March 7
3:45 PM PHSC 809 |
Paul Plummer
University of Oklahoma | Nielson-Thurston classification and combinatorial train tracks |
March 28
4:00 PM PHSC 809 |
Martin Kerin
University of Muenster | Double disk bundle decompositions and rational ellipticity |
April 4
3:45 PM PHSC 809 |
Greg Muller
University of Oklahoma | Skein algebras and marked surfaces |
April 11
4:00 PM PHSC 809 |
Robert Kropholler
Tufts University | Almost finitely presented subgroups of hyperbolic groups |
April 18
4:00 PM PHSC 1105 |
Mehmet Aktas
University of Central Oklahoma | The Study of Dessins d'Enfants as an Invariant of Trigonal Curves |
April 25
4:00 PM PHSC 809 |
Andy Eisenberg
Oklahoma State University | A Characterization of Plain Groups via Rewriting Systems |
May 2
3:45 PM PHSC 809 |
Jing Tao
University of Oklahoma | Fine geometry of the Thurston metric |
May 9
4:00 PM PHSC 809 |
Jason DeVito
University of Tennessee at Martin | Almost positive curvature on an irreducible symmetric space of rank 2 |
Fall 2017
August 23
4:00 PM PHSC 809 |
Ricardo Mendes
University of Cologne | Sectional curvature and the Weitzenböck formula |
August 30
3:45 PM PHSC 809 |
Michael Jablonski
University of Oklahoma | Blending theorems of Lie and Nash |
September 6
3:45 PM PHSC 809 |
Shihshu Walter Wei
University of Oklahoma | From geodesics to F-harmonic maps |
September 13
3:45 PM PHSC 809 |
Lee Kennard
University of Oklahoma | Representations of tori and an application in Riemannian geometry |
September 20
3:45 PM PHSC 809 |
Lee Kennard
University of Oklahoma | Representations of tori and an application in Riemannian geometry, II |
October 5
12:00 PM PHSC 1105 |
Dave Auckly
Kansas State University | One is stabilization is enough for isotopy of surfaces |
October 11
3:45 PM PHSC 809 |
Pengfei Zhang
University of Oklahoma | Generic geodesic flow on S^2 |
October 18
4:00 PM PHSC 809 |
Brett Kotschwar
Arizona State University | A uniqueness theorem for asymptotically cylindrical shrinking Ricci solitons |
October 25
4:00 PM PHSC 809 |
Neil Hoffman
Oklahoma State University | Determining co-hyperbolicity of 3-manifolds |
November 1
4:00 PM PHSC 809 |
Yingbo Han
Xinyang Normal University and OU | On the CR Poincaré-Lelong equation, Yamabe steady solitons and structures of complete noncompact Sasakian manifolds |
November 8
4:00 PM PHSC 809 |
Owen Dearricott
University of Melbourne | Positive curvature in dimension 7 |
November 17
3:30 PM PHSC 809 |
Matt Clay
University of Arkansas | Thermodynamic metrics on outer space |
November 29
4:00 PM PHSC 809 |
Edgar Bering
Temple University | A McCarthy-type theorem for linearly growing outer automorphisms of a free group |
Spring 2017
January 25
3:45 PM PHSC 809 |
Lee Kennard
University of Oklahoma | Topological realization problems |
February 1
4:00 PM PHSC 809 |
Carolyn Gordon
Darthmouth College | Decoding geometry and topology from the Steklov spectrum of orbisurfaces |
February 8
3:45 PM PHSC 809 |
Jing Tao
University of Oklahoma | Coarse and fine geometry of the Thurston metric |
February 15
3:45 PM PHSC 809 |
Justin Malestein
University of Oklahoma | Burnside-like problems for Aut(Fn) and primitive homology |
February 22
3:45 PM PHSC 809 |
Ignat Soroko
University of Oklahoma | Uncountably many quasi-isometry classes of groups of type FP |
March 1
4:00 PM PHSC 809 |
Andrew Sale
Vanderbilt University | Vastness properties of McCool groups of free groups and automorphisms of RAAGs |
March 8
4:00 PM PHSC 809 |
Kenneth Bromberg
University of Utah | Convex co-compact subgroups of the mapping class group |
March 29
3:45 PM PHSC 809 |
Thomas Lane
University of Oklahoma | Curvature on Lie Groups |
April 5
3:45 PM PHSC 809 |
Anthony Martino
University of Oklahoma | Dunwoody's geometric proof of Stallings Theorem |
April 12
4:00 PM PHSC 809 |
Yusheng Wang
Beijing Normal University | Curvature >= 1, diameter >= \pi/2 and rigidity (in Alexandrov geometry) |
April 19
3:45 PM PHSC 809 |
Jonathan Merlini
University of Oklahoma | Rank Rigidity on 3-Manifolds |
April 26
4:00 PM PHSC 809 |
Joseph Maher
CUNY | Random walks on groups with negative curvature |
May 3
3:45 PM PHSC 809 |
Elahe Khalili Samani
University of Oklahoma | Topology of 8-dimensional positively curved Riemannian manifolds with symmetry |
May 10
4:00 PM PHSC 809 |
Tracy Payne
Idaho State University | Evolutionary Game Theory and Applications to Geometry |
Fall 2016
September 7
3:45 PM PHSC 809 |
Leonard R. Rubin
University of Oklahoma | New methods for G-acyclic resolutions in cohomological dimension |
September 14
3:45 PM PHSC 809 |
Jonathan Epstein
University of Oklahoma | Topological entropy of magnetic flows on nilmanifolds |
September 21
4:00 PM PHSC 809 |
Dave Auckly
Kansas State University | Equivariant Homology Cobordism |
September 28
3:45 PM PHSC 809 |
Boris Apanasov
University of Oklahoma | Topological barriers for maps, M.A.Lavrentiev problem, and 4-cobordisms |
October 5
3:45 PM PHSC 809 |
Shihshu Walter Wei
University of Oklahoma | Distance Functions, Hessian, Radial Curvature and Mean Curvature |
October 12
3:45 PM PHSC 809 |
Ravi Shankar
University of Oklahoma | New metrics of non-negative sectional curvature on exotic spheres |
October 19
4:00 PM PHSC 809 |
Maria Emilia Descotte
University of Buenos Aires | 2-Pro-object theory |
October 26
4:00 PM PHSC 809 |
Wolfgang Ziller
University of Pennsylvania | Graph manifolds, nullity and the Nomizu conjecture |
November 2
4:00 PM PHSC 809 |
Dmytro Yeroshkin
Idaho State University | Manifolds with density and measure |
December 7
3:45 PM PHSC 809 |
Michael Tilles
University of Oklahoma | Geometry of 2-step nilpotent Lie groups |
Spring 2016
February 3
3:45 PM PHSC 809 |
Justin Malestein
University of Oklahoma | Arithmetic quotients of the mapping class group from covers |
February 10
3:45 PM PHSC 809 |
Ignat Soroko
University of Oklahoma | Dehn functions of subgroups of right-angled Artin groups |
February 17
3:45 PM PHSC 809 |
KB Lee
University of Oklahoma | Some infra-nilmanifolds of dimension 6 |
February 24
4:00 PM PHSC 809 |
Andrew Putman
Rice University | The high-dimensional cohomology of the moduli space of curves with level structures |
March 9
4:00 PM PHSC 809 |
Mark Pengitore
Purdue | Effective Separability of Nilpotent Groups |
March 30
4:00 PM PHSC 809 |
Richard Webb
University College, London | Locally infinite complexes, combinatorial isoperimetric inequalities and CAT(0) metrics |
April 20
3:45 PM PHSC 809 |
Shihshu Walter Wei
University of Oklahoma | The Geometry and Topology of Locally Conformally Flat Manifolds, Quasiconformal and Quasiregular Mappings |
April 27
4:00 PM PHSC 809 |
Huy T. Nguyen
University of Oklahoma | Harmonic forms on Kahler manifolds |
May 4
3:45 PM PHSC 809 |
Robert Tang
University of Oklahoma | Veech surfaces and simple closed curves |
May 31
3:30 PM PHSC 809 |
Ramiro Lafuente
University of Muenster | On a gap theorem for Ricci flatness on homogeneous spaces and its applications |
Fall 2015
September 2
3:45 PM PHSC 809 |
Leonard Rubin
University of Oklahoma | Examples of Pseudo-compact Spaces and Their Products |
September 9
3:45 PM PHSC 809 |
Jeff Meyer
University of Oklahoma | Geodesics and Surfaces: A Rigid Interaction |
September 16
3:45 PM PHSC 809 |
Ravi Shankar
University of Oklahoma | Semi-free circle actions on 5-manifolds |
September 23
3:45 PM PHSC 809 |
Max Forester
University of Oklahoma | Effective quasimorphisms for right-angled Artin groups |
September 30
4:00 PM PHSC 809 |
Camille Horbez
University of Utah | Subgroups of the automorphism group of a free product |
October 21
3:45 PM PHSC 809 |
Max Forester
University of Oklahoma | Quasimorphisms on right-angled Artin groups |
November 11
4:00 PM PHSC 809 |
Andrey Vesnin
Russian Academy of Sciences (Sobolev Institute of Mathematics in Novosibirsk) | From right-angled polyhedra to manifolds and links |
November 18
3:45 PM PHSC 1105 |
Walter Wei
University of Oklahoma | Lawson-Simons Conjecture, Cohomology Algebra, Complex Analysis, and Characteristic Classes |
November 30
3:30pm PHSC 359 |
Tommy Murphy
Cal. State University, Fullerton | Complex Riemannian foliations of Hermitian symmetric spaces. |
December 2
3:45 PM PHSC 809 |
Ben Stucky
University of Oklahoma | Applications of Graph Folding |
December 9
4:00 PM PHSC 809 |
Catherine Searle
Wichita State University | Non-negative curvature and torus actions |
Spring 2015
January 21
4:00 PM PHSC 809 |
Henry Segerman
Oklahoma State University | Pachner moves and crushing normal surfaces |
January 28
3:45 PM PHSC 809 |
Jing Tao
University of Oklahoma | Growth Tight Actions |
February 18
4:00 PM PHSC 1105 |
Catherine Pfaff
Universität Bielefeld | When Outer Space behaves like Teichmuller space (or hyperbolic spaces) & how we can use this to understand Out(F_n) |
March 25
4:00 PM PHSC 809 |
Funda Gultepe
University of Illinois at Urbana-Champaign | Constructing fully irreducible automorphisms of the free group via geometric Dehn twisting |
April 1
4:00 PM PHSC 809 |
Thomas Koberda
Yale | Convex cocompactness in right-angled Artin groups |
April 22
4:00 PM PHSC 1105 |
Benjamin Linowitz
University of Michigan | Effective rigidity in spectral geometry |
April 29
4:00 PM PHSC 115 |
Peter Petersen
UCLA | Uniqueness of Warped Product Einstein Metrics |
Fall 2014
August 20
4:00 PM PHSC 1105 |
Lina Wu
BMCC, CUNY | Studying Harmonic Differential Forms by Extending the Scope of L^{q} Growth |
September 3
3:45 PM PHSC 809 |
Robert Tang
University of Oklahoma | Shadows of Teichmueller discs in the curve graph |
September 10
3:45 PM PHSC 809 |
Garrett Alston
University of Oklahoma | Holomorphic curves in symplectic and contact geometry, I |
September 17
3:45 PM PHSC 809 |
Garrett Alston
University of Oklahoma | Holomorphic curves in symplectic and contact geometry, II |
September 24
3:45 PM PHSC 809 |
Jing Tao
University of Oklahoma | Uniform growth rate |
October 1
4:00 PM PHSC 809 |
Talia Fernós
UNC Greensboro | Rigidity of actions on CAT(0) cube complexes |
October 8
3:45 PM PHSC 809 |
Noel Brady
University of Oklahoma | Hyperbolic Hydra |
November 5
3:45 PM PHSC 809 |
Chenxu He
University of Oklahoma | Infinitesimal rigidity of gradient steady Ricci soliton in dimension three |
November 12
3:45 PM PHSC 809 |
Ignat Soroko
University of Oklahoma | Virtually special free-by-cyclic groups |
December 3
3:45 PM PHSC 809 |
Michael Jablonski
University of Oklahoma | Einstein solvmanifolds have maximal symmetry |
Spring 2014
January 17
3:30 PM PHSC 809 |
Dan Knopf
University of Texas at Austin | Type-II singularities of Ricci flow |
January 22
4:00 PM PHSC 809 |
John Harvey
University of Notre Dame | Orbifolds and Alexandrov geometry |
January 29
3:45 PM PHSC 809 |
Will Wylie
Syracuse University | Sectional Curvature for Riemannian manifolds with density. |
February 5
4:30 PM PHSC 809 |
Trent Schirmer
Oklahoma State University | Heegaard splittings, free tangle decompositions, and the fundamental group of knots |
February 12
4:00 PM PHSC 809 |
Mark Feighn
Rutgers University-Newark | Folding paths in Outer space |
February 19
3:45 PM PHSC 809 |
Max Forester
University of Oklahoma | Trees and stable commutator length |
February 25
4:00 PM PHSC 1105 |
Vera Tonic
Ben Gurion University | Introduction to asymptotic dimension theory for discrete groups |
March 26
3:45 PM PHSC 809 |
Michael Jablonski
University of Oklahoma | A step towards the Alekseevskii Conjecture. |
April 2
4:00 PM PHSC 809 |
Danielle O'Donnol
Oklahoma State University | Legendrian Graphs |
April 9
4:00 PM PHSC 809 |
Sean Bowman
Oklahoma State University | Knots in the page of an open book |
April 23
3:45 PM PHSC 809 |
Scott Thuong
University of Oklahoma | All Four-Dimensional Infra-Solvmanifolds are Boundaries |
April 30
3:45 PM PHSC 809 |
Ignat Soroko
University of Oklahoma | A new linearity criterion of Bou-Rabee and McReynolds |
Fall 2013
August 28
3:45 PM PHSC 809 |
Jeffrey Meyer
University of Oklahoma | A Geometric Introduction to Arithmetic Groups |
September 4
3:45 PM PHSC 809 |
Jeffrey Meyer
University of Oklahoma | An Introduction to Spectral Geometry of Arithmetic Locally Symmetric Spaces (a.k.a - A Geometric Introduction to Arithmetic Groups - Part II) |
September 11
3:45 PM PHSC 1105 |
Shihshu Walter Wei
University of Oklahoma | New Comparison Theorems and Cohomology Groups |
September 18
3:45 PM PHSC 809 |
Matthew Lynam
University of Oklahoma | Extensional Maps |
October 2
3:45 PM PHSC 809 |
Ravi Shankar
University of Oklahoma | Rigidity of spherical rank for a lower curvature bound |
October 9
3:45 PM PHSC 809 |
Michael Jablonski
University of Oklahoma | An equivalence of conjectures |
October 16
3:45 PM PHSC 809 |
Michael Jablonski
University of Oklahoma | An equivalence of conjectures, part II |
October 23
3:45 PM PHSC 809 |
Chenxu He
University of Oklahoma | Linear stability of gradient shrinking Ricci solitons |
October 30
3:45 PM PHSC 809 |
Joel Louwsma
University of Oklahoma | Stable commutator length in Baumslag-Solitar groups |
November 6
3:45 PM PHSC 809 |
Noel Brady
University of Oklahoma | Homotopical and homological Dehn functions are different |
November 13
3:45 PM PHSC 809 |
Chenxu He
University of Oklahoma | Linear stability of gradient shrinking Ricci solitons, II |
November 20
3:45 PM PHSC 809 |
Leonard Rubin
University of Oklahoma | The Topology of Direct Limits of Direct Systems Induced by Maps |
December 4
4:00 PM PHSC 809 |
Sam Taylor
The University of Texas at Austin | Subfactor projections and fully irreducible automorphisms of free groups |
Spring 2013
January 23
3:45 PM PHSC 809 |
Murad Ozaydin
University of Oklahoma | Topological Robotics - Restricted Configuration Spaces |
January 30
3:45 PM PHSC 809 |
Murad Ozaydin
University of Oklahoma | Topological Robotics - Restricted Configuration Spaces II |
February 6
3:45 PM PHSC 809 |
Shihshu Walter Wei
University of Oklahoma | A generalized Bochner's method and its applications in real and complex geometry and topology |
February 13
3:45 PM PHSC 809 |
Shihshu Walter Wei
University of Oklahoma | A generalized Bochner's method and its applications in real and complex geometry and topology II |
March 6
3:45 PM PHSC 809 |
Chenxu He
University of Oklahoma | Riemannian manifolds with positive or non-negative sectional curvature |
April 17
3:45 PM PHSC 809 |
Jing Tao
University of Oklahoma | The shape of moduli space |
May 1
3:45 PM PHSC 1105 |
Yoe Herrera
University of Oklahoma | Intersection Numbers in a Surface |
Fall 2012
September 12
4:00 PM PHSC 809 |
Lee Kennard
UC Santa Barbara | Two conjectures of Hopf in the presence of symmetry |
September 19
3:45 PM PHSC 809 |
Chenxu He
University of Oklahoma | Existence and uniqueness of Einstein metrics on warped products |
September 26
3:45 PM PHSC 809 |
Jing Tao
University of Oklahoma | Thurston metric on Teichmuller space |
October 17
3:45 PM PHSC 809 |
Jean Sun
University of Oklahoma | Growth, Projections and Bounded Generation of Mapping Class Groups |
October 24
3:45 PM PHSC 809 |
Michael Jablonski
University of Oklahoma | How to build an isometry group. |
October 31
3:45 PM PHSC 809 |
William Carter
University of Oklahoma | Nice Examples of Non-Unique Product Groups |
November 7
3:45 PM PHSC 809 |
Leonard Rubin
University of Oklahoma | Simplified Proofs of the Z/p- and Q-resolution Theorems |
November 27
3:45 PM PHSC 809 |
| |
November 28
4:00 PM PHSC 809 |
Spencer Dowdall
University of Illinois at Urbana-Champaign | Kleinian convex cocompact subgroups of mapping class groups |
December 5
3:45 PM PHSC 809 |
Rachel Wright
University of Oklahoma | Right-angled Artin groups as totally reflected systems |