Quantum Groups and Representations Learning Seminar

In summer 2009, a bunch of students/postdocs working with Joel Kamnitzer or Sergey Arkhipov come together to discuss topics of common interest. Generally, we are interested in quantum groups, representations and related areas.

Schedule, Summary and References

Date Plan Participants Summary Main references Other references
April 28 Organizational Silvia
Lucy
Stephen
Bruce
We decided to meet weekly on Tuesday 2pm, and we had a round table discussion of everyone's research and interests. Ginzburg, "Geometric Methods in Representation Theory of Hecke Algebras and Quantum Groups";
Schiffman and Etingof, "Lectures on Quantum Groups" (QC20.7 .G76 E85 in Gerstein)
May 5 Stephen leads discussion on Ginzburg's paper on cohomology of quantum groups Silvia
Stephen
Lucy
Iva
We headed in the right direction, but only managed to work through a bunch of definitions and sort of stated the main theorem. Ginzburg and Kumar, "Cohomology of quantum groups at roots of unity";
Lusztig, "Quantum groups at roots of unity"
Lusztig, "Finite dimensional Hopf algebras arising from quantized universal enveloping algebras"
May 12 (Silvia leads discussion on cohomology of quantum groups at roots of unity following the Ginzburg paper appendix) Stephen
Lucy
Bruce
Stephen ended up leading the discussion because Silvia was sick. We tried to look at an explicit calculation, but didn't finish it during the meeting. Stephen said he would post the solution later. Appendix of Ginzburg, "Geometric Methods in Representation Theory of Hecke Algebras and Quantum Groups"
May 19 CANCELLED as Bruce, me and Stephen are all travelling to Northwestern for the TFT conference
May 26 (Silvia on Hochschild cohomology of associative unital algebras) Silvia
Stephen
Silvia wasn't quite ready to speak yet. So they discussed seminar plan for the coming weeks. This meeting was postponed to Friday, May 29.
May 29 Silvia on Hochschild cohomology of associative unital algebras Silvia
Stephen
Lucy
Everything went as planned, except that Stephen forgot about the time, so we started late. [reference missing]
June 2 Unspecified: Silvia? Stephen? Towards tieing back to the Ginzburg paper Silvia
Stephen
Lucy
Chandrika
Lucy asked for general homological idealogy. Silvia presented Koszul complex; Stephen continued his explicit calculation of Ext from a few weeks ago [reference missing]
June 9 Lucy on existence and unique of quantized enveloping algebra using cohomology Silvia
Stephen
..others?..
Kassel

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