\(3\times 3\) lemma and protomodularity

DOI10.1006/jabr.2000.8526zbMath0978.18004OpenAlexW2067717199WikidataQ124935737 ScholiaQ124935737MaRDI QIDQ5929360

Publication date: 22 January 2002

Published in: Journal of Algebra (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1006/jabr.2000.8526

zbMATH Keywords

\(3\times 3\) lemma central extensions crossed modules protomodular category quasi-pointed regular category snake lemma

Mathematics Subject Classification ID

Nonabelian homological algebra (category-theoretic aspects) (18G50) Special categories (18B99) Abelian categories, Grothendieck categories (18E10)

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