For an integer n > 1, let G = Un, the group of units in Zn; that is, the set of all [a] in Zn that have multiplicative inverses. Prove that Un is a group with respect to multiplication.
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For an integer n > 1, let G = Un, the group of units in Zn; that is, the set of all [a] in Zn that have multiplicative inverses. Prove that Un is a group with respect to multiplication.
I mean, what's the problem? Maybe the following will help youQuote:
Originally Posted by MissMousey
Quote:
Theorem: The equationis solvable precisely when
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