The Sunflower Lemma of Erdős and Rado

René Thiemann 🌐

February 25, 2021

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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


Session Sunflowers