theorem Th17:
for
A being non
trivial Nat for
C,
B,
e being
Nat st
0 < B &
C = Py (
A,
B) holds
ex
i,
j,
D,
E,
F,
G,
H,
I being
Nat st
(
(D * F) * I is
square &
F divides H - C &
B <= C &
D = (((A ^2) - 1) * (C ^2)) + 1 &
E = (((2 * (i + 1)) * D) * (e + 1)) * (C ^2) &
F = (((A ^2) - 1) * (E ^2)) + 1 &
G = A + (F * (F - A)) &
H = B + ((2 * j) * C) &
I = (((G ^2) - 1) * (H ^2)) + 1 )