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Small Cover的L-S畴数

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Small Cover的L-S畴数 母雪薇, 刘登品广西师范大学数学与统计学院 桂林 541004 Lusternik–Schnirelmann Category of Small Cover Xue Wei MU, Deng Pin LIUSchool of Mathematics and Statistics, Guangxi Normal University, Guilin 541004, P. R. China
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摘要我们证明了如下结论:任意n维smallcover的Lusternik-Schnirelmann畴数等于n;任意2n维toric-流形的Lusternik-Schnirelmann畴数等于n.我们的结果依赖于如下两个事实,一个是不等式cup(M)≤ cat(M)≤ dim(M)/r,它导致我们去计算cup(M).另一个事实是环面拓扑流形上同调环的明确表示,该表示使得cup(M)的计算变得容易.最后,我们进一步推广了相关结论.
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收稿日期: 2019-09-12
MR (2010):O189.2
基金资助:国家自然科学基金资助项目(11401118)
作者简介: 母雪薇,E-mail:13045321015@163.com;刘登品,E-mail:aaldp520@126.com
引用本文:
母雪薇, 刘登品. Small Cover的L-S畴数[J]. 数学学报, 2021, 64(1): 59-64. Xue Wei MU, Deng Pin LIU. Lusternik–Schnirelmann Category of Small Cover. Acta Mathematica Sinica, Chinese Series, 2021, 64(1): 59-64.
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http://www.actamath.com/Jwk_sxxb_cn/CN/ http://www.actamath.com/Jwk_sxxb_cn/CN/Y2021/V64/I1/59


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[1]Deng Pin LIU. Cellular Chain Complex of Small Covers with Integer Coefficients and Its Application[J]. Acta Mathematica Sinica, English Series, 2018, 34(11): 1742-1754.



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