Abstract:
We describe the cohomology ring of the moduli space of a flexible polygon in geometrically meaningful terms. We propose two presentations, both are computation friendly: there are simple rules for the cup product.
Citation:
I. Nekrasov, G. Panina, “Geometric presentation for the cohomology ring of polygon spaces”, Algebra i Analiz, 31:1 (2019), 80–91; St. Petersburg Math. J., 31:1 (2020), 59–67
\Bibitem{NekPan19}
\by I.~Nekrasov, G.~Panina
\paper Geometric presentation for the cohomology ring of polygon spaces
\jour Algebra i Analiz
\yr 2019
\vol 31
\issue 1
\pages 80--91
\mathnet{http://mi.mathnet.ru/aa1628}
\elib{https://elibrary.ru/item.asp?id=43244626}
\transl
\jour St. Petersburg Math. J.
\yr 2020
\vol 31
\issue 1
\pages 59--67
\crossref{https://doi.org/10.1090/spmj/1584}
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Linking options:
https://www.mathnet.ru/eng/aa1628
https://www.mathnet.ru/eng/aa/v31/i1/p80
This publication is cited in the following 1 articles:
Ilia I. Nekrasov, Gaiane Yu. Panina, “Compactifications of M0,n Associated with Alexander Self-Dual Complexes: Chow Rings, ψ-Classes, and Intersection Numbers”, Proc. Steklov Inst. Math., 305 (2019), 232–250