2021-10-01 10:38
src/linear_algebra/bilinear_form.lean
feat(linear_algebra/{bilinear,quadratic}_form): remove non-degeneracy requirement from `exists_orthogonal_basis` and Sylvester's law of inertia (#9465) …
Added bilin_form.is_Ortho.nondegenerate_iff_not_is_ortho_basis_self