Let R be a commutative ring with unity of prime characteristic p. Show that the map
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Let R be a commutative ring with unity of prime characteristic p. Show that the map ∅p : R → R given by ∅p(a) = aP is a homomorphism (the Frobenius homomorphism).
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In a commutative ring R the binomial expansion is valid If p is a prime and ...View the full answer
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