α : Type u_1
r : α → α → Prop
wf : WellFounded r
x : α
h : ∃ y, r x y
⊢ r x (min wf {y | r x y} h)
α : Type u_1
r : α → α → Prop
wf : WellFounded r
x : α
h : ∃ y, r x y
⊢ r x (WellFounded.succ wf x)
rw [WellFounded.succ, dif_pos h]
no goals
α : Type u_1
r : α → α → Prop
wf : WellFounded r
x : α
h : ∃ y, r x y
⊢ r x (min wf {y | r x y} h)
apply min_mem