mathlib3

6537ae9c - feat(order/partition/finpartition): Bound size of a bit of `finpartition.atomise` (#15350)

feat(order/partition/finpartition): Bound size of a bit of `finpartition.atomise` (#15350) Auxiliary lemmas for Szemerédi Regularity Lemma. Co-authored-by: Bhavik Mehta <bhavik.mehta8@gmail.com>