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Title
Categorias de Moore

Abstract
In 1970, M. Gerstenhaber introduced in [1] a list of axioms defining Moore categories in order to develop the Baer Extension Theory. The independence of the axioms is studied and they are compared with more recent notions. Thus, a Moore category is a pointed, strongly protomodular and Barr-exact category with cokernels. With Grp as a model, the Baer sum of extensions is presented in a Moore category, without using all cokernels.
[1] M. Gerstenhaber, A categorical setting for the Baer extension theory, Proc. of Symposia in Pure Mathematics 17, 50-64, Amer. Math. Soc., Providence 1970.

Areas of interest
Category Theory

Speaker(s)
Diana Rodelo (CMUC/Universidade do Algarve)

Date
October 21, 2003

Time
14.30

Room
Sala 5.5

 
     
 

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