Satellites in Semi-Abelian Categories
 
 
Description:  After giving a short introduction to semi-abelian categories, I will compare three different view-points of semi-abelian homology. The last of these uses the universal properties of a long exact homology sequence to make homology into a limit or pointwise Kan extension. This allows us to define homology without using projective objects. I will give some examples and also discuss what happens to this viewpoint when enough projectives are available.
Date:  2009-05-12
Start Time:   16:00
Speaker:  Julia Goedecke (Centre for Mathematical Sciences, Univ. Cambridge, UK)
Institution:  --
Research Groups: -Algebra, Logic and Topology
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