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计算了循环多胞形$C^{3}(6)$的对偶和单形乘积上(可定向)小覆盖的等变同胚类的个数 相似文献
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Let RP(k) denote the k-dimensional real projective space. This article determines which cobordism classes are represented by the total space of a fibering with prescribed base space RP(3)× RP(1), RP(2) × RP(1), RP(2)× RP(1)× RP(1) or RP(3)× RP(2). 相似文献
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本文借助于计算机编程给出了有限群在可定向闭曲面T~(nr 1)上反向自由作用个数的上界,同时决定了反向自由作用于小亏格闭曲面T~(nr 1)上的有限群以及p-1为素数时反向自由作用于闭曲面T_p上的有限群。 相似文献
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Let (M2m+4n+k-2, T) be a smooth closed manifold with a smooth involution T whose fixed point set is RP(2m)(∪) P(2m, 2n - 1) (m > 3, n > 0). For 2n≥2m, (M2m+4n+k-2, T) is bordant to (P(2m, RP(2n)), To). 相似文献
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设RP(2m+1)为2m+1维实射影空间,CP(k)为k维复射影空间.证明了每个以RP(2m+1)×CP(k)为不动点集的对合协边. 相似文献
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Let(M,T) be a closed manifold with an involution T.The fixed point set of T is F.In this article,bordism classes of the involutions with fixed point set F = ∪(from i=1 to m) CP i(1) × HP i(n) are determined,where CP(1) and H P(n) denote the 1-dimensional complex projective space and n-dimensional quaternionic projective space respectively,and n = 2p-2 or n = 2p-1(p > 1). 相似文献
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§1. IntroductionInthispaper,RP(n),CP(n),HP(n)representsn-dimensionalrealprojectivespace,complexprojectivespace,quaternionisprojectivespacerespectively.M~2RP(n)meansthemod2cohomologyringofMisisomorphictothatofRP(n):H(M;Z2)≈H(RP(n);Z2).Weintroducethe… 相似文献