寓言
发表于 2025-3-21 17:52:19
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hemoglobin
发表于 2025-3-21 21:34:19
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Innocence
发表于 2025-3-22 00:33:58
Infinite-Dimensional Problems,pings in some infinite-dimensional topological vector spaces. In this way, extensions of the Kakutani fixed point theorem are obtained for set-valued self-mappings of compact subsets in locally convex topological vector spaces (Ky Fan fixed point theorem), with their important special cases for sing
离开真充足
发表于 2025-3-22 07:23:46
Difference Equations,ears. For first order equations, special attention is paid on their periodic solutions, by analogy with the case of ordinary differential equations. The method of lower and upper solutions is developed and presents some interesting distinct features from the corresponding differential case. Combined
Evocative
发表于 2025-3-22 11:59:07
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证实
发表于 2025-3-22 14:35:21
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起来了
发表于 2025-3-22 20:01:05
History of the Brouwer Fixed Point Theorem,owing the ‘nonlinear’ character of the evolution of mathematics. After describing and commenting the fundamental contribution of Brouwer, it is shown how it has been in one way or another anticipated by Poincaré (with his .-dimensional intermediate value theorem), Hadamard (with his first published
替代品
发表于 2025-3-22 21:38:39
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火花
发表于 2025-3-23 02:32:23
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genesis
发表于 2025-3-23 07:55:49
Politische Entscheidung als Phasenmodell − 1)-differential form depending upon . and its partial derivatives. For . = 2, it is the Cauchy index or winding number of . on ., the algebraic number of turns of . around the closed curve .. The Gauss linking number of two curves is a special case of the Kronecker index in .. Various expressions