Arithmetic Progressions and Relative Primes

José Manuel Rodríguez Caballero

1 February 2020


This article provides a formalization of the solution obtained by the author of the Problem “ARITHMETIC PROGRESSIONS” from the Putnam exam problems of 2002. The statement of the problem is as follows: For which integers n > 1 does the set of positive integers less than and relatively prime to n constitute an arithmetic progression?
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