Meanings
nouncosection (plural cosections)
plural cosections
- mathematicsThe left inverse of a morphism.
Provided #92;mathcal#123;R#125; admits a cosection cutting out a 1-dimensional subscheme, we prove that the generating function of these Euler characteristics is equal to M(q)#123;2e(X)#125; times a polynomial of degree c#95;3(#92;mathcal#123;R#125;).
2016, M. Kool, A. Gholampour, “Rank 2 wall-crossing and the Serre correspondence”, in arXiv
Origin
Cite this entry
APA
cosection. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/cosection
MLA
“cosection.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cosection. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “cosection,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/cosection.
Source: cosection on Wiktionary, CC BY-SA 4.0.