Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2020-06-24 14:36 04a5bdbc

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feat(linear_algebra/finsupp_vector_space): is_basis.tensor_product (#3147) If b : ι → M and c : κ → N are bases then so is λ i, b i.1 ⊗ₜ c i.2 : ι × κ → M ⊗ N.

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