梯田 发表于 2025-3-30 12:01:19

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Rodent 发表于 2025-3-30 15:43:16

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Conduit 发表于 2025-3-30 18:10:41

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查看完整版本: Titlebook: Calculus of Variations; Filip Rindler Textbook 2018 Springer International Publishing AG, part of Springer Nature 2018 calculus of variati