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An element a in a monoid is called an idempotent if ______________(a) a^-1=a*a^-1(b) a*a^2=a(c) a^2=a*a=a(d) a^3=a*aI got this question during an online interview.This intriguing question originated from Groups topic in division Groups of Discrete Mathematics |
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Answer» The correct option is (c) a^2=a*a=a |
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