
theorem Th31:
for L being Field
for x being Element of L holds eval(0._(L),x) = 0.L
proof
let L be Field; let x be Element of L;
thus eval(0._(L),x) = eval(0_.(L),x) * eval((0._(L))`2,x)"
                    .= 0.L * eval((0._(L))`2,x)" by POLYNOM4:17
                    .= 0.L;
end;
