"group object" meaning in English

See group object in All languages combined, or Wiktionary

Noun

Forms: group objects [plural]
Head templates: {{en-noun}} group object (plural group objects)
  1. (category theory) Given a category C, any object X ∈ C on which morphisms are defined corresponding to the group theoretic concepts of a binary operation (called multiplication), identity and inverse, such that multiplication is associative and properties are satisfied that correspond to the existence of inverse elements and the identity element. Wikipedia link: group object Categories (topical): Category theory

Inflected forms

Download JSON data for group object meaning in English (3.0kB)

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          "ref": "1995, J. Michael Boardman, “Chapter 14: Stable Operations in Generalized Cohomology”, in I.M. James, editor, Handbook of Algebraic Topology, Elsevier (North-Holland), page 617",
          "text": "If H is another group object in C, a morphism f#x3A;G#x5C;rightarrowH is a morphism of group objects if it commutes with the three structure morphisms; as is standard for sets and true generally (again by Lemma 7.7), it is enough to check #x5C;mu. Thus we form the category #x5C;textit#x7B;Gp#x7D;(C) of all group objects in C; one important example is #x5C;textit#x7B;Gp#x7D;(#x5C;textit#x7B;Ho#x7D;).",
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          "text": "2005, Angelo Vistoli, Part 1: Grothendieck typologies, fibered categories, and descent theory, Barbara Fantechi, Lothar Göttsche, Luc Illusie, Steven L. Kleiman, Nitin Nitsure, Angelo Vistoli, Fundamental Algebraic Geometry: Grothendieck's FGA Explained, American Mathematical Society, page 20,\nThe identity is obviously a homomorphism from a group object to itself. Furthermore, the composite of homomorphisms of group objects is still a homomorphism; thus, group objects in a fixed category form a category, which we denote by Grp(C)."
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          "text": "If H is another group object in C, a morphism f#x3A;G#x5C;rightarrowH is a morphism of group objects if it commutes with the three structure morphisms; as is standard for sets and true generally (again by Lemma 7.7), it is enough to check #x5C;mu. Thus we form the category #x5C;textit#x7B;Gp#x7D;(C) of all group objects in C; one important example is #x5C;textit#x7B;Gp#x7D;(#x5C;textit#x7B;Ho#x7D;).",
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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2024-05-01 from the enwiktionary dump dated 2024-04-21 using wiktextract (f4fd8c9 and c9440ce). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

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