OAK
发表于 2025-3-21 17:42:36
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陈旧
发表于 2025-3-21 22:14:35
The Amplituhedron,mage of the positive Grassmannian . under a totally positive linear map. Regarded as a non-linear generalization of (cyclic) polytopes inside the Grassmannian, it is a semialgebraic set with beautiful and rich combinatorics. The . amplituhedron . encodes tree-level amplitudes in . SYM. The . amplitu
NAG
发表于 2025-3-22 00:55:43
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镶嵌细工
发表于 2025-3-22 06:31:35
T-Duality: The Hypersimplex Versus the Amplituhedron,ch is the moment map image of the positive Grassmannian . and has nice combinatorics in connection with matroid theory and tropical geometry. The second is the . . .—a 2.-dimensional semialgebraic set in . which is the image of the positive Grassmannian . under a linear map induced by a totally posi
拒绝
发表于 2025-3-22 09:21:58
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阻挡
发表于 2025-3-22 13:25:32
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阻挡
发表于 2025-3-22 19:15:34
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聋子
发表于 2025-3-23 01:12:59
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abduction
发表于 2025-3-23 05:28:03
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FLEET
发表于 2025-3-23 07:58:31
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