The Singular Homology of the Hawaiian Earring

The Singular Homology of the Hawaiian Earring
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夏威夷耳环的奇异同源性

DOI:
10.1112/s0024610700001071
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发表时间:
2000
期刊:
Journal of the London Mathematical Society
影响因子:
--
通讯作者:
K. Kawamura
K. Kawamura
中科院分区:
--
文献类型:
--
作者:
K. Eda;K. Kawamura

文献摘要

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紧CW-复形的奇异同调群是无限生成的,但是紧度量空间的群一般都很容易无限生成,即使对于下面的称为夏威夷耳环的平面的紧子集,我们对这些群的理解也远未完成:H= Σ m=1∞Cm,其中Cm={(x,y)∈R2|(x-1m)2+y2=1m2}
The singular homology groups of compact CW‐complexes are finitely generated, but the groups of compact metric spaces in general are very easy to generate infinitely and our understanding of these groups is far from complete even for the following compact subset of the plane, called the Hawaiian earring: H=∪m=1∞Cm,where Cm={(x,y)∈R2|(x‐1m)2+y2=1m2}