Yorck Sommerhäuser

Address:

Memorial University of Newfoundland
Department of Mathematics and Statistics
St. John's, NL
Canada
A1C 5S7

Email:

sommerh@mathematik.uni-muenchen.de
sommerh@mun.ca

Phone/Fax:

Phone: 001 709 864 8097
Fax: 001 709 864 3010

Teaching:

• Courses
• Seminars

Videos:

1. Algebraische Zahlentheorie
2. On central character rings

Publications:

1. Deformed enveloping algebras
2. Kac-Moody algebras
3. On Kaplansky's fifth conjecture
4. Ribbon transformations, integrals, and triangular decompositions
5. On Kaplansky's conjectures
6. Yetter-Drinfel'd Hopf algebras over groups of prime order
7. Self-dual modules of semisimple Hopf algebras
8. Stable anti-Yetter-Drinfel'd modules
9. Hopf-cyclic homology and cohomology with coefficients
10. On higher Frobenius-Schur indicators
11. Hopf algebras and congruence subgroups
12. On the central charge of a factorizable Hopf algebra
13. On the notion of a ribbon quasi-Hopf algebra
14. Triviality theorems for Yetter-Drinfel'd Hopf algebras
15. Hochschild cohomology and the modular group
16. On cores in Yetter-Drinfel'd Hopf algebras
17. Hochschild cohomology, modular tensor categories, and mapping class groups
18. On biproducts and extensions

Lectures:

• Conference talks
• Colloquia and seminar talks
• Recent and upcoming talks

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Internet links:

• Mathematics
• Physics
• Miscellaneous

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• New homepage in St. John's
• Last modification: September 9, 2020