
theorem
  for S,S9 being non void non empty ManySortedSign for A being non-empty
  MSAlgebra over S for f being Function of the carrier of S9, the carrier of S
  for g being Function st f,g form_morphism_between S9,S for B being non-empty
  MSAlgebra over S9 st B = A|(S9,f,g) for s1,s2 being SortSymbol of S9 st
TranslationRel S9 reduces s1,s2 for t being Translation of B, s1, s2 holds t is
  Translation of A, f.s1, f.s2 by Lm1;
