cosection

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English

Etymology

From co- +‎ section.

Noun

cosection (plural cosections)

(mathematics) The left inverse of a morphism.
- 2016, M. Kool, A. Gholampour, “Rank 2 wall-crossing and the Serre correspondence”, in arXiv‎:
  Provided ${\mathcal {R}}$ admits a cosection cutting out a 1-dimensional subscheme, we prove that the generating function of these Euler characteristics is equal to $M(q)^{2e(X)}$ times a polynomial of degree $c_{3}({\mathcal {R}})$ .

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