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Theorem real_inner_eq_norm_add_mul_self_sub_norm_mul_self_sub_norm_mul_self_div_two

Modification history

2020-10-01 07:41
src/analysis/normed_space/inner_product.lean
feat(analysis/normed_space/inner_product): Define the inner product based on `is_R_or_C` (#4057)
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