= Big-little-big lemma
{wiki=Big-little-big_lemma}
The Big-Little-Big Lemma is a result in number theory, particularly in the area of prime number theory and additive combinatorics. This lemma typically relates to the distribution of primes and the structure of integer sequences. The lemma asserts that if we have a prime p that divides a certain expression involving integers, and if we also have a prime q not dividing the same primes, then we can draw conclusions about the divisibility or arithmetic properties of sequences or sums involving these primes.
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