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Theorem im_inner_eq_norm_sub_I_smul_mul_self_sub_norm_add_I_smul_mul_self_div_four

Modification history

2021-01-27 01:48
src/analysis/normed_space/inner_product.lean
feat(analysis/normed_space): define linear isometries (#5867) …
Added im_inner_eq_norm_sub_I_smul_mul_self_sub_norm_add_I_smul_mul_self_div_fourView on Github →