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Bookmark or Share- What does it mean to say "a divides b" - Mathematics Stack Exchange$\begingroup$ "a divides b" means a and b are integers and there is an integer n, such that n x a = b; or ...
- What is meant by "evenly divisible"? - Mathematics Stack ExchangeFor example, we can say that "20 is evenly divisible by 5", which is equivalent to saying that "5 divides 20"; or in mathematical notation, $5 | 20$. I am sure that the author of the question that you cite, "What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?"
- Proof of Euclid's Lemma - Mathematics Stack ExchangeI saw on the internet the following Proof of Euclid's lemma, which states that if a prime number divides the product of two numbers, then it must divide at least one of the two numbers.
- elementary number theory - A problem on divisibility: If $c$ divides ...Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
- Proof by induction: Prove that $6$ divides $9^n - 3^n$Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
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