coprimality

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Pairwise coprime — In mathematics, especially number theory, a set of integers is said to be pairwise coprime (or pairwise relatively prime, also known as mutually coprime) if every pair of integers a and b in the set are coprime (that is, have no common divisors… … Wikipedia
Gödel numbering for sequences — A Gödel numbering for sequences provides us an effective way to represent each finite sequence of natural numbers as a single natural number. Of course, the embedding is surely possible set theoretically, but the emphasis is on the effectiveness… … Wikipedia
Chinese remainder theorem — The Chinese remainder theorem is a result about congruences in number theory and its generalizations in abstract algebra. In its most basic form it concerned with determining n, given the remainders generated by division of n by several numbers.… … Wikipedia

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