Yorck Sommerhäuser

Recent and Upcoming Talks

• Mathematical Congress of the Americas: Special session on Hopf algebras and tensor categories
  • Title: TBA
  • Date: Monday, July 21 - Friday, July 25, 2025
  • Location: Miami, USA
  • Summary

• Memorial University
  • Title: Constructing mapping class group representations from Hopf algebras II
  • Date: Wednesday, October 16, 2024
  • Location: St. John's, Canada
  • Summary
• Memorial University
  • Title: Constructing mapping class group representations from Hopf algebras I
  • Date: Wednesday, October 9, 2024
  • Location: St. John's, Canada
  • Summary
• Hopf Algebras and Monoidal Categories
  • Title: Self-duality of Yetter-Drinfel'd Hopf algebras and their biproducts
  • Date: Thursday, September 5, 2024
  • Location: Ferrara, Italy
  • Summary

• University of Almería
  • Title: Hopf algebras - an introduction
  • Date: Monday, July 8 - Friday, July 12, 2024
  • Location: Almería, Spain
  • Summary

• Universität Hamburg
  • Title: Mapping class group actions on cohomology groups
  • Date: Tuesday, June 18, 2024
  • Location: Hamburg, Germany
  • Summary

• Canadian Mathematical Society Summer Meeting: Session on the representation theory and geometry of quantum algebras
  • Title: Hopf algebras, cohomology, and mapping class groups
  • Date: Monday, June 3, 2024
  • Location: Saskatoon, Canada
  • Summary

• AMS Spring Western Sectional Meeting: Special session on tensor categories and noncommutative algebras
  • Title: Hopf algebras and mapping class group representations
  • Date: Saturday, May 4, 2024
  • Location: San Francisco, USA
  • Summary

• University of Alberta
  • Title: Hopf algebras and their applications in topological field theory
  • Date: Friday, April 12, 2024
  • Location: Edmonton, Canada
  • Summary

• Memorial University
  • Title: Hopf algebras in categories and their extensions II
  • Date: Wednesday, October 18, 2023
  • Location: St. John's, Canada
  • Summary

• Memorial University
  • Title: Hopf algebras in categories and their extensions
  • Date: Wednesday, October 4, 2023
  • Location: St. John's, Canada
  • Summary

• Groups, Rings, Lie and Hopf Algebras. V
  • Title: Yetter-Drinfel'd Hopf algebras and their extensions
  • Date: Wednesday, August 23, 2023
  • Location: Harlow, United Kingdom
  • Summary

• Tenth Congress of Romanian Mathematicians
  • Title: Categorical aspects of extension theory
  • Date: Tuesday, July 4, 2023
  • Location: Piteşti, Romania
  • Summary

• AMS Fall Western Sectional Meeting: Special session on quantum groups, Hopf algebras and applications
  • Title: TBA (talk cancelled)
  • Date: Saturday, October 22 - Sunday, October 23, 2022
  • Location: Salt Lake City, USA
  • Summary

• Hopf Algebras, Monoidal Categories and Related Topics
  • Title: Isomorphisms and self-duality of Yetter-Drinfel'd Hopf algebras
  • Date: Wednesday, July 27, 2022
  • Location: Bucharest, Romania
  • Summary

• Joint Mathematics Meeting: Special session on Hopf algebras and tensor categories
  • Title: New semisimple Hopf algebras via the biproduct construction
  • Date: Thursday, April 7, 2022
  • Location: Seattle, USA (virtual)
  • Summary

• Memorial University
  • Title: What is a Hopf algebra?
  • Date: Thursday, February 17, 2022
  • Location: St. John's, Canada (virtual)

• University of Costa Rica
  • Title: Hopf algebras: History, achievements, and problems
  • Date: Thursday, October 21, 2021
  • Location: San José, Costa Rica (virtual)
  • Summary
  • Recording

• Mathematical Congress of the Americas: Special session on quantum symmetries
  • Title: New examples of semisimple Hopf algebras
  • Date: Friday, July 16, 2021
  • Location: Buenos Aires, Argentina (virtual)
  • Summary

• Technische Universität Dresden
  • Title: Equivariant Frobenius-Schur indicators for Hopf algebras
  • Date: Monday, June 14, 2021
  • Location: Dresden, Germany (virtual)
  • Summary

• Atlantic Algebra Centre
  • Title: A short introduction to Hopf algebras
  • Date: November 10-26, 2020
  • Location: St. John's, Canada (virtual)

• Memorial University
  • Title: What is a Hopf algebra?
  • Date: Thursday, September 24, 2020
  • Location: St. John's, Canada

• Memorial University
  • Title: What is a Hopf algebra?
  • Date: Thursday, November 14, 2019
  • Location: St. John's, Canada
  • Summary

• AARMS Workshop at Science Atlantic
  • Title: Current developments in Hopf algebra theory
  • Date: Sunday, October 27, 2019
  • Location: Halifax, Canada
  • Summary

• International Workshop on Hopf Algebras and Tensor Categories
  • Title: Cores in Yetter-Drinfel'd Hopf algebras: Examples
  • Date: Wednesday, September 11, 2019
  • Location: Nanjing, China
  • Summary

• Nonassociative Algebras and Geometry
  • Title: New examples of Yetter-Drinfel'd Hopf algebras
  • Date: Friday, August 16, 2019
  • Location: Norris Point, Canada
  • Summary

• XXIII Coloquio Latinoamericano de Álgebra
  • Title: Examples of cores in Yetter-Drinfel'd Hopf algebras
  • Date: Monday, August 5, 2019
  • Location: Mexico City, Mexico
  • Summary

• Universität Hamburg
  • Title: New examples of Yetter-Drinfel'd Hopf algebras
  • Date: Tuesday, July 9, 2019
  • Location: Hamburg, Germany
  • Summary

• Fudan University
  • Title: Yetter-Drinfel'd Hopf algebras
  • Date: Thursday, June 6, 2019
  • Location: Shanghai, China
  • Summary

• East China Normal University
  • Title: Hopf algebras - a short introduction
  • Date: Wednesday, June 5, 2019
  • Location: Shanghai, China
  • Summary

• East China Normal University
  • Title: Equivariant Frobenius-Schur indicators and congruence subgroups
  • Date: May 29, May 30, June 3, June 4, June 10, 2019
  • Location: Shanghai, China
  • Summary

• AMS Spring Southeastern Sectional Meeting: Special session on Hopf algebras and their applications
  • Title: Cores in Yetter-Drinfel'd Hopf algebras: Examples
  • Date: Saturday, March 16, 2019
  • Location: Auburn, USA
  • Summary

• University of Alberta
  • Title: A short introduction to Hopf algebras
  • Date: Thursday, February 28, 2019
  • Location: Edmonton, Canada
  • Summary

• University of Alberta
  • Title: Hopf algebras, congruence subgroups, and Frobenius-Schur indicators
  • Date: Monday, February 25, 2019
  • Location: Edmonton, Canada
  • Summary

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• Last modification: October 14, 2024