proposition: Lemma cvg_shiftr (M : R) (T : topologicalType) (f : R -> T) (l : T) : (f (n + M) @[n --> +oo]--> l) = (f r @[r --> +oo] --> l).
proof: Proof. rewrite propeqE; split; last by apply: cvg_comp; exact: cvg_addrr. rewrite -[X in X -> _](cvg_centerr M); apply: cvg_trans => /=. apply: near_eq_cvg; near do rewrite subrK; exists M. by rewrite num_real. Unshelve. all: by end_near. Qed.
imports: mathcomp(all_ssreflect ssralg ssrint ssrnum finmap) mathcomp(matrix interval zmodp vector fieldext falgebra) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality) ereal reals signed topology prodnormedzmodule normedtype derive sequences real_interval HB(structures)