Identify all the subfields of a field , with elements where is a prime. Draw the lattice of all subfields.
I am allowed to just use a theorem, but I don't know one to use.
http://lh5.ggpht.com/_miqRA1rlzTU/ST...dpZsJ6Fs/1.jpg
Here it is. I am pretty sure it is correct though. Thanks for the help.