Bounds for the cup-length of Poincaré spaces and their applications

Bounds for the cup-length of Poincaré spaces and their applications
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庞加莱空间杯长的界限及其应用

DOI:
10.1016/j.topol.2006.01.005
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
J. Korbaš
J. Korbaš
中科院分区:
--
文献类型:
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作者:
J. Korbaš

文献摘要

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我们的主要结果提供了一种新的(相当系统的)方法来推导场上庞加莱空间杯长的界限;我们根据这一结果概述了一个总体研究计划。对于定向格拉斯曼流形,在许多情况下,该程序的有限实现已经导致了杯长度的精确值以及有关 Lyusternik-Shnirel'man 类别的有趣信息。
Our main result offers a new (quite systematic) way of deriving bounds for the cup-length of Poincaré spaces over fields; we outline a general research program based on this result. For the oriented Grassmann manifolds, already a limited realization of the program leads, in many cases, to the exact values of the cup-length and to interesting information on the Lyusternik–Shnirel'man category.