On the Lambek Invariants of Commutative Squares in a Quasi-Abelian Category
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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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Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial 4.0.
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Kopylov, Y. . (2025). On the Lambek Invariants of Commutative Squares in a Quasi-Abelian Category. Scientia, 11, 57-67. https://doi.org/10.71712/