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(** ** Multiplication                                    *)
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(* TODO: We may want to deprecate it but cannot because of the hint used in external libs (the stdlib can already be compiled without it) *)
Lemma Rminus_diag_uniq_sym : forall r1 r2, r2 - r1 = 0 -> r1 = r2.
#[global]
Hint Resolve Rplus_minus: real.