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Action accessibility via centralizers - MaRDI portal

Action accessibility via centralizers (Q456859)

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scientific article; zbMATH DE number 6094146
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Action accessibility via centralizers
scientific article; zbMATH DE number 6094146

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    Action accessibility via centralizers (English)
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    16 October 2012
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    The authors introduce a non-symmetric notion of centralization between a relation and an equivalence relation. For exact pointed protomodular categories, the existence of such non-symmetric centralizers is equivalent to action accessibility (in the sense of \textit{D. Bourn} and \textit{G. Janelidze} [Cah. Topol. Géom. Différ. Catég. 50, No. 3, 211--232 (2009; Zbl 1187.18011)]).
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    protomodular category
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    exact category
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    centralizer
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    action accessible category
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