诱骗
发表于 2025-3-26 21:43:07
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存心
发表于 2025-3-27 03:00:08
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Definitive
发表于 2025-3-27 06:53:05
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违抗
发表于 2025-3-27 12:57:04
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事情
发表于 2025-3-27 15:19:47
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outrage
发表于 2025-3-27 21:51:28
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影响深远
发表于 2025-3-27 23:06:37
Functors of Complexes,up . there is, essentially, one covariant and one contravariant . such that .. The resulting groups . are the .. The functors . are also useful in studying product spaces; these questions are discussed in §§ 8–12.
arterioles
发表于 2025-3-28 05:08:02
Manifolds,ly regular then the orbit space is also a manifold. The set of solutions ., ... , .) ∈ ℝ. of a sufficiently regular system of equations . (.,..., .) = 0, . = 1,..., ., is a manifold. These and other examples justify studying the special homology properties of manifolds.
漫不经心
发表于 2025-3-28 08:21:44
Preliminaries on Categories, Abelian Groups and Homotopy,apter I only when necessary. He may then find the reference in I too short, insufficient (some proofs are omitted), or too ad-hoc; in that case he should consult the relevant literature, samples of which are listed at the end of §1 and §2.