
theorem
for R being domRing,
    p being Element of the carrier of Polynom-Ring R
holds p is Unit of Polynom-Ring R implies p is non zero constant
proof
let F be domRing, p be Element of the carrier of Polynom-Ring F;
p is Unit of Polynom-Ring F implies deg p = 0 by T88;
hence thesis by LX;
end;
