Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2021-01-06 02:30 9fdd703b

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feat(linear_algebra/affine_space/midpoint): a few more lemmas (#5571)

  • simplify expressions like midpoint R p₁ p₂ -ᵥ p₁ and p₂ - midpoint R p₁ p₂;
  • fix a typo in data/set/intervals/surj_on.

Estimated changes