quism

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noun

A quasi-isomorphism.

Scrabble 16

Meanings

nounquism (plural quisms)

plural quisms

  1. mathematicsA quasi-isomorphism.

    By [3], the vertical maps are quisms.

    2000, Alex Martsinkofsky, New homological invariants for modules over local rings, II, Journal of Pure and Applied Algebra, Vol. 153 No. 1
    3 more examples

    Most authors speak of a quasi-isomorphism or quism, but Bourbaki's term is more descriptive.

    1990, Jan R. Strooker, Homological Questions in Local Algebra, Cambridge University Press, →ISBN, page 5

    Then the composition is a quism and therefore is an acceptable Adams-Hilton model for E.

    1992, Kathryn P. Hess, “Twisted tensor products of DGA’s and the Adams-Hilton model for the total space of a fibration”, in Nigel Ray and Spike Walker (editors), Adams Memorial Symposium on Algebraic Topology (proceedings of a July 1990 symposium), Volume I, Cambridge University Press, page 51

    Since ρ₀ is a surjective quism, the Σ-module K is acyclic.

    2002, Martin Markl, Steven Shnider, James Stasheff, Operads in Algebra, Topology and Physics, American Mathematical Society, →ISBN, page 201

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APA

quism. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/quism

MLA

“quism.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/quism. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “quism,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/quism.

Source: quism on Wiktionary, CC BY-SA 4.0.