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Theorem
inner_product_geometry.norm_sub_eq_abs_sub_norm_iff_angle_eq_zero
Modification history
2022-10-13 06:01
src/geometry/euclidean/angle/unoriented/basic.lean
refactor(geometry/euclidean): split up unoriented angles (#16942) …
Modified
inner_product_geometry.norm_sub_eq_abs_sub_norm_iff_angle_eq_zero
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2021-05-02 00:17
src/geometry/euclidean/basic.lean
feat(geometry/euclidean/basic): lemmas about angles and distances (#7140)
Added
inner_product_geometry.norm_sub_eq_abs_sub_norm_iff_angle_eq_zero
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