Ooooooh. I have a short essay on abelian categories that me and Alexander Berglund wrote when we took ... I think it must have been our topology course once upon a time. Somewhere.
Coherence conditions and cocycle conditions overlap a lot, do they? I know a few things pop up in group cohomology that obviously come from that general direction.
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Coherence conditions and cocycle conditions overlap a lot, do they? I know a few things pop up in group cohomology that obviously come from that general direction.