I know that ring homomorphism is injective but not surjective, but I can't come up with an example with an integral domain R of characteristic p>0 such that the map is r-> r^p. I need help with this. Thank you.
2026-03-25 01:18:57.1774401537
give an example of an integral domain R of characteristic p>0, such that the map R->R, r->r^p is a non-surjective ring homomorphism
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