Homology, Homotopy and Applications

Volume 11 (2009)

Number 1

On $H*(\mathcal{C}; k^×)$ for fusion systems

Pages: 203 – 218

DOI: https://dx.doi.org/10.4310/HHA.2009.v11.n1.a10


Markus Linckelmann (Department of Mathematical Sciences, University of Aberdeen, Scotland, United Kingdom)


We give a cohomological criterion for the existence and uniqueness of solutions of the $2$-cocycle gluing problem in block theory. The existence of a solution for the $2$-cocycle gluing problem is further reduced to a property of fusion systems of certain finite groups associated with the fusion system of a block.


fusion system, block, 2-cocycle

2010 Mathematics Subject Classification

16E40, 18G40, 20C20

Published 1 January 2009