
theorem :: WAYBEL31:1, AK, 21.02.2006
  for T be TopStruct for b be Basis of T holds weight T c= card b
proof
  let T be TopStruct;
  let b be Basis of T;
  card b in the set of all  card B1 where B1 is Basis of T ;
  hence thesis by SETFAM_1:3;
end;
