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arXiv 2602.21802math.AG
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非交换crepant解析用于(几乎)单纯形典范代数

Non-commutative crepant resolutions for (almost) simplicial toric algebras

Beijing Institute of Mathematical Sciences and Applications(北京国际数学研究中心);Massachusetts Institute of Technology(麻省理工学院)

Aimeric Malter, Artan Sheshmani

AI总结:

本文通过非交换crepant解析方法,证明了单纯形和几乎单纯形典范Gorenstein代数的典范解析存在性,并提供了新的简短证明。

摘要:

给定一个由晶格多面体P构造的有理凸多面体Gorenstein锥,我们证明其关联的典范代数的典范非交换crepant解析(NCCRs)可以降维到多面体P的面的代数的典范NCCRs。作为结果,我们给出了两种新的简短证明,用于证明单纯形仿射典范Gorenstein代数和几乎单纯形仿射典范Gorenstein代数的典范NCCRs的存在性,即那些关联到具有dimσ+1个极值射线的锥σ的代数。

英文摘要:

Given a rational convex polyhedral Gorenstein cone constructed as cone over a lattice polytope P, we establish that toric non-commutative crepant resolutions (NCCRs) of its associated toric algebra descend to toric NCCRs of the algebras associated to faces of the polytope P. As consequence, we present two new, short proofs to the existence of toric NCCRs for simplicial affine toric Gorenstein algebras and for almost simplicial affine toric Gorenstein algebras, i.e. those associated to cones $σ$ with $\dimσ+1$ extremal rays.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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