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单词
homotopy groups
释义
homotopy groups
homotopy groups
[
hō′mäd·ə·pē ‚grüps
]
(mathematics)
Associated to a topological space
X,
the groups appearing for each positive integer
n,
which reflect the number of different ways (up to homotopy) than an
n
-dimensional sphere may be mapped to
X
.
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更新时间:2026/4/13 21:04:15