University of Cambridge > Talks.cam > Category Theory Seminar > Universal central extensions in peri-abelian categories

Universal central extensions in peri-abelian categories

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Julia Goedecke.

(joint work with James Gray)

We clarify the relation between Bourn’s notion of peri-abelian category on the one hand and coincidence of the Smith, Huq and Higgins commutators on the other. Next, peri-abelian categories are shown to form a good context for the general theory of universal central extensions: all peri-abelian categories satisfy the condition (UCE) considered in joint work with Casas; and via a result of Cigoli, all categories of interest in Orzech’s sense are examples.

This talk is part of the Category Theory Seminar series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2014 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity