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Question: f where exercise 3 in f a field we denote...

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F (where Exercise 3. In F a field, we denote by n the element 1 + . . . + 1 1 is added to itself n-times) Show that if n -0 in F, then some prime divisor of n is zero in F as well This prime number is called the characteristic of F (if for all n, nメ0 in F we say F has characteristic 0). Show also that the characteristic of a field is unique.

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