CSU Topology Seminar
This seminar at Colorado State University is for those interested in topology and its applications, broadly interpreted. The seminar is co-organized by Henry Adams, Alex Elchesen, and Amit Patel.
Fall 2022: Tuesdays at 4pm in WB 201
August 23, organizational meeting
August 30
September 6
September 13
September 20
September 27 (w/o HA)
October 4
October 11
October 18
October 25 (w/o HA)
November 1
November 8
November 15
November 29
December 6
Spring 2022, Fall 2021, Spring 2021, Fall 2020: Please see www.aatrn.net for an online topology seminar co-hosted by CSU, meeting Wednesdays at 9am Mountain Time (typically) on Zoom. Please email Henry for more details.
Spring 2020: Tuesdays at 4pm in WB 201
January 28, organizational meeting
February 11, Alex Williams, Computing persistent homology
Wednesday February 12, Shmuel Weinberger, 10am in Morgan 172. This is part of the AATRN Online Seminar.
February 18, Henry Adams, Persistent homology, zigzag persistence, and quiver representations
February 25, Michael DiPasquale, Multiparameter persistence
March 3, Hailun Zheng, Face numbers of centrally symmetric simplicial polytopes and spheres
March 10, Joshua Mirth, A statistical perspective on persistence
THE REMAINING TOPOLOGY SEMINAR MEETINGS WERE CANCELLED DUE TO COVID-19.
March 24, Chris Peterson, Stochastic topologyMarch 31, Eric Kehoe, The complex of pseudoultrametrics and iterated cycle structuresApril 7, Brittany Carr, Radon's theorem and Tverberg's conjectureApril 14, Johnathan Bush, The topological Tverberg conjectureApril 21, Henry Adams at Topology Day in BoulderFriday May 8, Hannah Alpert, Configuration spaces of hard objects
Fall 2019
September 3, organizational meeting
September 10, Henry Adams, An introduction to matroids [Notes]
September 17, Alex McCleary, An introduction to matroids and greedoids [Björner Section 6]
September 24, Michael DiPasquale, Oriented matroids [Björner Section 7] and/or [appendix of MacPherson]
October 1, Amit Patel, Matroid bundles [Anderson]
October 8, Woojin Kim, Generalized persistence diagrams for persistence modules over posets
October 15, Amit Patel, Matroid bundles and the MacPhersonian [MacPherson]
October 22, Harrison Chapman, Knots, biology, (and data)
October 29, Mark Blumstein, Symmetries in data
November 5, Molly Moran, An introduction to geometric group theory
November 12, Markus Pflaum, Relative K-theory
November 19, Chris Peterson, A piece of Hilbert's 16th problem
December 10, Bryan Gillespie, Convexity in ordered matroids and the generalized external order
Spring 2019
January 29, organizational meeting. Topics we discussed that were not claimed below included group representations in data analysis, Persistent cohomology and circular coordinates, and magnitude homology for metric spaces, and Finding optimal discrete Morse functions is NP-hard.
Feb 5, Michael DiPasquale, Steinitz' theorem and some relatives
Feb 26, Amit Patel is giving two lectures at the Boulder Topology Seminar
March 5, Jānis Lazovskis, Stratifications and sheaves for persistent homology
March 12, Érika Roldán Roa, Asymptotic behavior of the homology of random polyominoes
March 26, Henry Adams, The waist inequality [Notes/Slides, Reference by Larry Guth]
April 2, Amit Patel, Intersection homology & duality for pseudomanifolds I
April 9, Amit Patel, Intersection homology & duality for pseudomanifolds II
April 16, Topology day in Boulder, with talks by Satyan Devadoss and Ezra Getzler
April 23, Harrison Chapman, The Grunbaum-Hadwinger-Ramos Hyperplane Mass Partition Problem
April 30, John Bush, Metric thickenings, orbitopes, and Borsuk-Ulam theorems
Fall 2018
August 21, organizational meeting
August 28, Bernd Sturmfels, Learning algebraic varieties from samples (AATRN seminar, at an unusual time 11:00am, in Morgan 172)
September 4, Joshua Mirth, Morse theory
September 11, Joshua Mirth, Discrete Morse theory
September 18, Grzegorz Muszynski, Towards topological pattern detection methods in spatiotemporal data
September 25, Amit Patel, Multidimensional persistence
October 2, Chris Peterson, Multiparameter persistence
October 9, Alex McCleary, Magnitude homology
October 16, Tanner Strunk, Applied vector bundles
October 23, Agnès Beaudry, The Linearization Conjecture
October 30, Mark Blumstein, Introduction to Lie groups and principal bundles
November 6, Mark Blumstein, Principal bundles and Chern-Weil theory
November 13, Henry Adams, Lovasz' proof of the Kneser conjecture
December 4, Ezra Miller (AATRN seminar, at an unusual time 11:00am, in Morgan 172)
Spring 2018
January 30, Mark Blumstein, An introduction to equivariant cohomology I
February 6, Mark Blumstein, An introduction to equivariant cohomology II
February 20, Topology Day at CU Boulder
February 27, Tom Needham, Injectivity properties of distance distributions
March 6, Amit Patel, Applications of merge trees and Reeb graphs
March 20, Amit Patel, Homology with twisted coefficients
March 27, Greg Henselman, Combinatorics and Computation in Topological Data Analysis
April 10, Chad Topaz, Topological data analysis of collective motion
April 17, Amit Patel, Cosheaf homology
April 24, Henry Adams, An introduction to homotopy colimits [Notes]
May 1, Henry Adams, Using homotopy colimits to understand infinite simplicial complexes
Fall 2017
September 5, Amit Patel, The theory of persistence I
September 12, Amit Patel, The theory of persistence II
September 19, Amit Patel, The theory of persistence III
September 26, Henry Adams, An introduction to Vietoris-Rips and Cech complexes I
October 3, Joshua Mirth, Metric thickenings of Euclidean submanifolds
October 10, Henry Adams, Vietoris-Rips complexes of the circle
October 31, Amit Patel, Tubular neighborhoods for Whitney stratified spaces
November 7, Henry Kvinge, An introduction to Khovanov homology I
November 14, Henry Kvinge, An introduction to Khovanov homology II
November 28, Dustin Sauriol, Leray spectral sequences I
December 5, Dustin Sauriol, Leray spectral sequences II