fact: Definition index_seq_prop_family (Q : nat -> Prop) (k : nat) (n : nat -> nat) := match k with | O => Q (n 0) | S k => Q (n (k + 1)) /\ n k < n (k + 1) end.
imports: Lia Arith Arith.Compare ClassicalChoice ChoiceFacts Libs.Analysis.SubsequencesMetric