- 分割定理
- 切除定理
- excision: n. 1.删除。 2.【医学】切除(术)。 3.【宗教】 ...
- theorem: n. 1.(能证明的)一般原理，公理，定律，法则。 2. ...
- homotopy excision theorem: 同伦分割定理
- excision: n. 1.删除。 2.【医学】切除(术)。 3.【宗教】逐出教会。
- s theorem: 贝叶斯定理
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excision theorem中文什么意思
- 分割定理
- 切除定理
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百科释义
In algebraic topology, a branch of mathematics, the excision theorem is a useful theorem about relative homology?given topological spaces X and subspaces A and U such that U is also a subspace of A, the theorem says that under certain circumstances, we can cut out (excise) U from both spaces such that the relative homologies of the pairs (X,A) and (X U,A U) are isomorphic. This assists in computation of singular homology groups, as sometimes after excising an appropriately chosen subspace we obtain something easier to compute.
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