Ramsey number

Meaning

Noun

• Any one of a certain set of numbers which are guaranteed to exist by Ramsey's theorem; a positive integer which is a certain function of some given multiset of positive integers, where that "certain function" is that which yields the minimal number guaranteed to exist by Ramsey's theorem.

Origin

• Named after Frank Plumpton Ramsey (1903–1930), British mathematician, philosopher and economist.