
theorem
  for a1,a2,a3,a4,a5,a6,a7,a8,a9,a10 being object holds
  rng <*a1,a2,a3,a4,a5,a6,a7,a8,a9,a10*> = {a1,a2,a3,a4,a5,a6,a7,a8,a9,a10}
  proof
    let a1,a2,a3,a4,a5,a6,a7,a8,a9,a10 be object;
    thus rng <*a1,a2,a3,a4,a5,a6,a7,a8,a9,a10*>
    = rng <*a1,a2,a3,a4,a5,a6,a7,a8,a9*> \/ rng <*a10*> by FINSEQ_1:31
    .= {a1,a2,a3,a4,a5,a6,a7,a8,a9} \/ rng <*a10*> by Th2
    .= {a1,a2,a3,a4,a5,a6,a7,a8,a9} \/ {a10} by FINSEQ_1:38
    .= {a1,a2,a3,a4,a5,a6,a7,a8,a9,a10} by ENUMSET1:85;
  end;
