Tactic is run (ideally only once)
Tactic is run (ideally only twice)
Tactic is run (ideally only twice)
Tactic is run (ideally only once, in most general context)
n : Nat
⊢ (invImage (fun x => x) instWellFoundedRelation).1 n n.succ
Tactic is run (ideally only twice, in most general context)
Tactic is run (ideally only twice, in most general context)
n : Nat
⊢ sizeOf n < sizeOf n.succ
n m : Nat ⊢ (invImage (fun x => PSigma.casesOn x fun a a_1 => a) instWellFoundedRelation).1 ⟨n, m + 1⟩ ⟨n.succ, m⟩