case h.e'_2.h.h.h.e
α : Type u_1
inst✝ : CancelCommMonoidWithZero α
h : WellFounded fun x x_1 => x < x_1
x✝¹ x✝ : Associates α
⊢ DvdNotUnit = LT.lt
α : Type u_1
inst✝ : CancelCommMonoidWithZero α
h : WellFounded fun x x_1 => x < x_1
⊢ WellFounded DvdNotUnit
convert h
case h.e'_2.h.h.h.e.h.h.a
α : Type u_1
inst✝ : CancelCommMonoidWithZero α
h : WellFounded fun x x_1 => x < x_1
x✝³ x✝² x✝¹ x✝ : Associates α
⊢ DvdNotUnit x✝¹ x✝ ↔ x✝¹ < x✝
case h.e'_2.h.h.h.e
α : Type u_1
inst✝ : CancelCommMonoidWithZero α
h : WellFounded fun x x_1 => x < x_1
x✝¹ x✝ : Associates α
⊢ DvdNotUnit = LT.lt
ext
no goals
case h.e'_2.h.h.h.e.h.h.a
α : Type u_1
inst✝ : CancelCommMonoidWithZero α
h : WellFounded fun x x_1 => x < x_1
x✝³ x✝² x✝¹ x✝ : Associates α
⊢ DvdNotUnit x✝¹ x✝ ↔ x✝¹ < x✝
exact Associates.dvdNotUnit_iff_lt