What is special about the divisors of 12?
classification
🧮 math.AC
keywords
coefficientscommutingdivisordivisorseveryfinitelyinvolutionmany
read the original abstract
Let R be the ring of polynomials in finitely many commuting variables with coefficients in Z_n. It is shown that every unit of R is an involution if and only of n is a divisor of 12.
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