Y by son7, Mango247
Let denote the set of ordered pairs of positive integers. A finite subset of is stable if whenever is in , then so are all points of with both and .
Prove that if is a stable set, then among all stable subsets of (including the empty set and itself), at least half of them have an even number of elements.
Ashwin Sah and Mehtaab Sawhney
Prove that if is a stable set, then among all stable subsets of (including the empty set and itself), at least half of them have an even number of elements.
Ashwin Sah and Mehtaab Sawhney
This post has been edited 1 time. Last edited by willwin4sure, Dec 15, 2020, 6:09 PM