Memorial 发表于 2025-3-30 11:06:14
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Mario S. Catalani,Giuseppe F. Clerico notion of a vector in an abstract .-dimensional space and, in general, the notion of an extensor (decomposable antisymmetric tensor). Grassmann’s plan was radically innovative; his aim was to found an intrinsic algebraic calculus for (projective, affine, euclidean) geometry, that was alternative to改革运动 发表于 2025-3-31 00:46:33
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