Algebra, Logic and Topology

 

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Title
Satellites in Semi-Abelian Categories

Abstract
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.

Speaker(s)
Julia Goedecke (Centre for Mathematical Sciences - Univ. Cambridge)

Date
May 12, 2009

Time
16.00

Room
Sala 5.5

 
     
 

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