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zbMath0568.18009MaRDI QIDQ3684277

Manuel Bullejos, Antonio Martínez Cegarra

Publication date: 1984

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

nonabelian cohomology hypergroupoid Mal'tsev variety two-dimensional obstruction theory

Mathematics Subject Classification ID

Obstruction theory in algebraic topology (55S35) Nonabelian homological algebra (category-theoretic aspects) (18G50) Monads (= standard construction, triple or triad), algebras for monads, homology and derived functors for monads (18C15)

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Higher dimensional obstruction theory in algebraic categories ⋮ An exact sequence in the first variable for torsor cohomology: the 2-dimensional theory of obstructions

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