Articles
Published 2005-10-24
Keywords
- Quasi-abelian category,
- commutative square,
- Lambek invariants
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How to Cite
On the Lambek Invariants of Commutative Squares in a Quasi-Abelian Category. (2005). Scientia Series A: Mathematical Sciences, 11, 57-67. https://revistas.usm.cl/scientia/article/view/73
Abstract
We consider the invariants Ker and Im for commutative squares in quasi abelian categories. These invariants were introduced by Lambek for groups and then studied by Hilton and Nomura in categories exact in the sense of Buchsbaum.
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