The Sunflower Lemma of Erdős and Rado

René Thiemann

25 February 2021

Abstract

We formally define sunflowers and provide a formalization of the sunflower lemma of Erdős and Rado: whenever a set of size-k-sets has a larger cardinality than (r - 1)k · k!, then it contains a sunflower of cardinality r.
BSD License

Topics

Theories