let p be Prime; for n being non zero Nat
for F being p -characteristic Field st card F = p |^ n holds
for a being Element of F holds eval ((X^ ((p |^ n),F)),a) = 0. F
let n be non zero Nat; for F being p -characteristic Field st card F = p |^ n holds
for a being Element of F holds eval ((X^ ((p |^ n),F)),a) = 0. F
let F be p -characteristic Field; ( card F = p |^ n implies for a being Element of F holds eval ((X^ ((p |^ n),F)),a) = 0. F )
assume A:
card F = p |^ n
; for a being Element of F holds eval ((X^ ((p |^ n),F)),a) = 0. F
let a be Element of F; eval ((X^ ((p |^ n),F)),a) = 0. F
a |^ (p |^ n) = a
by A, thX0;
then
a is_a_root_of X^ ((p |^ n),F)
by thXX;
hence
eval ((X^ ((p |^ n),F)),a) = 0. F
; verum