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chore: bump to v4.9

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jstoobysmith 2024-07-02 11:36:36 -04:00
parent 1e5be33ffc
commit bd9f796110
11 changed files with 13 additions and 24 deletions
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1
HepLean/SpaceTime/MinkowskiMetric.lean
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@ -63,7 +63,6 @@ lemma det_eq_neg_one_pow_d : (@minkowskiMatrix d).det = (- 1) ^ d := by
lemma as_block : @minkowskiMatrix d = (
Matrix.fromBlocks (1 : Matrix (Fin 1) (Fin 1) ℝ) 0 0 (-1 : Matrix (Fin d) (Fin d) ℝ)) := by
rw [minkowskiMatrix]
congr
simp [LieAlgebra.Orthogonal.indefiniteDiagonal]
rw [← fromBlocks_diagonal]
refine fromBlocks_inj.mpr ?_