C Co D New member Jan 23, 2011 #1 So, I am stuck on this problem and I need help. Let R be an integral domain. Show that R contains a subring isomorphic to Z_p for some prime number p if and only if char(R)=p.
So, I am stuck on this problem and I need help. Let R be an integral domain. Show that R contains a subring isomorphic to Z_p for some prime number p if and only if char(R)=p.
