Mathlib v3 is deprecated. Go to Mathlib v4

Theorem orthonormal_basis.oangle_smul_smul_self_of_nonneg

Modification history

2022-10-24 11:01
src/geometry/euclidean/oriented_angle.lean
feat(geometry/euclidean/oriented_angle): refactor to a basis-free definition (#16596) …
Deleted orthonormal_basis.oangle_smul_smul_self_of_nonnegView on Github →
2022-09-30 21:28
src/geometry/euclidean/oriented_angle.lean
feat(analysis/inner_product/orientation, geometry/euclidean/oriented_angle): use bundled orthonormal bases (#16475) …
Added orthonormal_basis.oangle_smul_smul_self_of_nonnegView on Github →