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arXiv 1401.7301math.AGmath.ATmath.CO
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热带半环上的滤几何格与Lefschetz截口定理

Filtered geometric lattices and Lefschetz Section Theorems over the tropical semiring

Karim Alexander Adiprasito, Anders Björner

摘要:

本文的目的是建立光滑热带簇的经典Lefschetz截口定理的类似定理。更确切地说,我们证明了Lefschetz,Andreotti-Frankel,Bott-Milnor-Thom,Hamm-Lê和Kodaira-Spencer的截口定理,以及Andreotti-Frankel和Akizuki-Kodaira-Nakano的消灭定理的热带类似物。本文首先解决了Mikhalkin和Ziegler(2008)关于几何格的某些滤子的同伦类型的一个猜想,推广了全几何格的几个已知性质.这转化为一个关键的指数估计分层莫尔斯数据在临界点的热带品种,它本身也可以被解释为莱夫谢茨型定理拟阵。

英文摘要:

The purpose of this paper is to establish analogues of the classical Lefschetz Section Theorem for smooth tropical varieties. More precisely, we prove tropical analogues of the section theorems of Lefschetz, Andreotti-Frankel, Bott-Milnor-Thom, Hamm-Lê and Kodaira-Spencer, and the vanishing theorems of Andreotti-Frankel and Akizuki-Kodaira-Nakano. We start the paper by resolving a conjecture of Mikhalkin and Ziegler (2008) concerning the homotopy types of certain filtrations of geometric lattices, generalizing several known properties of full geometric lattices. This translates to a crucial index estimate for the stratified Morse data at critical points of the tropical variety; it can also by itself be interpreted as a Lefschetz-type theorem for matroids.

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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