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From: Hasse Riemann <rafaelb77@hotmail.com>
To: Category mailing list <categories@mta.ca>
Subject: What is classified by cohomology?
Date: Wed, 20 May 2009 23:09:28 +0000	[thread overview]
Message-ID: <E1M7AwY-00043R-UD@mailserv.mta.ca> (raw)


 

Hi all categorists
 
Here is another questions i think about and need your help with.
 
3>
What does the cohomology H^n(X;coefficients) classify, for X a more general object then a group and especially when X is a category?
I know that the case X=group gives n-torsors.

And how come that the classification is independant of the coefficients?
 
Best regards
Rafael Borowiecki




             reply	other threads:[~2009-05-20 23:09 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-20 23:09 Hasse Riemann [this message]
2009-05-21 18:04 Fernando Muro

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