Contraction of Areas vs. Topology of Mappings

Contraction of Areas vs. Topology of Mappings
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区域收缩与映射拓扑

DOI:
10.1007/s00039-013-0246-3
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发表时间:
2012
影响因子:
2.2
通讯作者:
L. Guth
L. Guth
中科院分区:
数学1区
文献类型:
--
作者:
L. Guth

文献摘要

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我们构造了从Sm到Sm−1的同伦非平凡映射,其中任意小的k-扩张对于每个k >(m + 1)/2。我们证明了从Sm到Sm−1的同伦非平凡映射不可能有任意小的k-扩张,其中k ≤(m + 1)/2。
We construct homotopically non-trivial maps from Sm to Sm−1 with arbitrarily small k-dilation for each k > (m + 1)/2. We prove that homotopically non-trivial maps from Sm to Sm−1 cannot have arbitrarily small k-dilation for k ≤ (m + 1)/2.