Abstract
We introduce the notion of pointed category and the related definition of exact sequence. We show how the four basic elementary algebraic facts described in the introduction can be translated in purely categorical terms, that is in a diagrammatic formulation.
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Bourn, D. (2017). Four basic facts in Algebra. In: From Groups to Categorial Algebra. Compact Textbooks in Mathematics. Birkhäuser, Cham. https://doi.org/10.1007/978-3-319-57219-2_3
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DOI: https://doi.org/10.1007/978-3-319-57219-2_3
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Publisher Name: Birkhäuser, Cham
Print ISBN: 978-3-319-57218-5
Online ISBN: 978-3-319-57219-2
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