theorem Th109:
   for E be Enumeration of F, p be Permutation of dom E holds
    E*p is Enumeration of F
proof
  let E be Enumeration of F,p be Permutation of dom E;
  reconsider Ep = E*p as FinSequence;
  dom p = dom E = rng p by FUNCT_2:52,def 3;
  then rng Ep = rng E =F by RELAT_1:28,RLAFFIN3:def 1;
  hence thesis by RLAFFIN3:def 1;
end;
