cosection

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English

Etymology

From co- +‎ section.

Noun

cosection (plural cosections)

  1. (mathematics) The left inverse of a morphism.
    • 2016, M. Kool, A. Gholampour, “Rank 2 wall-crossing and the Serre correspondence”, in arXiv:
      Provided admits a cosection cutting out a 1-dimensional subscheme, we prove that the generating function of these Euler characteristics is equal to times a polynomial of degree .