theorem
  Rea (<k>*') = 0 & Im1 (<k>*') = 0 & Im2 (<k>*') = 0 & Im3 (<k>*') = -1
proof
  <k>*' = [*zz,zz,zz,-jj*] by Th24,Th36;
  hence thesis by Th16;
end;
