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Theorem
re_inner_eq_norm_mul_self_add_norm_mul_self_sub_norm_sub_mul_self_div_two
Modification history
2021-01-27 01:48
src/analysis/normed_space/inner_product.lean
feat(analysis/normed_space): define linear isometries (#5867) …
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re_inner_eq_norm_mul_self_add_norm_mul_self_sub_norm_sub_mul_self_div_two
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