theorem
  f/.1 = W-max L~f & W-max L~f <> N-min L~f implies (W-max L~f)..f < (
  N-min L~f)..f
proof
  assume that
A1: f/.1 = W-max L~f and
A2: W-max L~f <> N-min L~f;
A3: N-min L~f in rng f by SPRECT_2:39;
  then (N-min L~f)..f in dom f by FINSEQ_4:20;
  then
A4: (N-min L~f)..f >= 1 by FINSEQ_3:25;
  W-max L~f in rng f & (W-max L~f)..f = 1 by A1,FINSEQ_6:43,SPRECT_2:44;
  hence thesis by A3,A2,A4,FINSEQ_5:9,XXREAL_0:1;
end;
