Explicit Formulas for 2-Characters

Details Explicit Formulas for 2-Characters Explicit Formulas for 2-Characters

2009-04-28

arxiv.org/abs/0904.4414v1

Mathematics

Algebraic Topology

11 pages Submitted to Proceedings of the AMS

Scientific paper

Ganter and Kapranov associated a 2-character to 2-representations of a finite
group. Elgueta classified 2-representations in the category of 2-vector spaces
2Vect_k in terms of cohomological data. We give an explicit formula for the
2-character in terms of this cohomological data and derive some consequences.

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