proposition: Lemma Rminus_eq_compat_rev_strong : forall a b c d, a - c = b - d -> c = d -> a = b.
proof: Proof. intros a b c d Heq Hcd ; replace a with (a - c + c) by ring ; replace b with (b - d + d) by ring ; subst ; apply Rplus_eq_compat_r ; assumption. Qed.
imports: Rbase Rtactic Lra Ranalysis Rfunctions Rtrigo_facts Rseries_def SeqProp Rextensionality Rpser_usual RIVT Rseries_facts Rsequence_cv_facts MyRIneq Tactics Rinterval Ranalysis_def Ranalysis_def_simpl Ranalysis_facts Ranalysis5