theorem :: HILB10_8:21
for k being Nat
for L being positive Nat st k > 0 holds
( k + 1 is prime iff ex f, i, j, m, u being positive Nat ex r, s, t being Nat ex A, B, C, D, E, F, G, H, I, W, U, M, S, T, Q being Integer st
( (D * F) * I is square & F divides H - C & (((M ^2) - 1) * (S ^2)) + 1 is square & ((((M * U) ^2) - 1) * (T ^2)) + 1 is square & (((W ^2) * (u ^2)) - ((((W ^2) - 1) * S) * u)) - 1, 0 are_congruent_mod Q & (((4 * (f ^2)) - 1) * ((r - (((m * S) * T) * U)) ^2)) + (((4 * (u ^2)) * (S ^2)) * (T ^2)) < ((((8 * f) * u) * S) * T) * (r - (((m * S) * T) * U)) & k + 1 divides f + 1 & A = M * (U + 1) & B = W + 1 & C = (r + W) + 1 & D = (((A ^2) - 1) * (C ^2)) + 1 & E = (((2 * i) * (C ^2)) * L) * D & F = (((A ^2) - 1) * (E ^2)) + 1 & G = A + (F * (F - A)) & H = B + ((2 * (j - 1)) * C) & I = (((G ^2) - 1) * (H ^2)) + 1 & W = ((100 * f) * k) * (k + 1) & U = ((100 * (u |^ 3)) * (W |^ 3)) + 1 & M = (((100 * m) * U) * W) + 1 & S = (((M - 1) * s) + k) + 1 & T = (((((M * U) - 1) * t) + W) - k) + 1 & Q = (((2 * M) * W) - (W ^2)) - 1 ) )