Deformations of local Artin rings via Hilbert-Burch matrices

Autor:	Homs, Roser, Winz, Anna-Lena
Rok vydání:	2023
Předmět:	Mathematics - Commutative Algebra Mathematics - Algebraic Geometry 13D02 14C05
Druh dokumentu:	Working Paper
Popis:	In the local setting, Gr\"obner cells are affine spaces that parametrize ideals in $\mathbf{k}[\![x,y]\!]$ that share the same leading term ideal with respect to a local term ordering. In particular, all ideals in a cell have the same Hilbert function, so they provide a cellular decomposition of the punctual Hilbert scheme compatible with its Hilbert function stratification. We exploit the parametrization given in \cite{HW21} via Hilbert-Burch matrices to compute the Betti strata, with hands-on examples of deformations that preserve the Hilbert function, and revisit some classical results along the way. Moreover, we move towards an explicit parametrization of all local Gr\"obner cells. Comment: 18 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2309.06871 Zobrazit plný text záznamu View this record from Arxiv