Type Ctrl-D or 'Exit.' to exit or 'Help.' for help. # Set: pp::colors Set: pp::unicode Assumed: q # Assumed: p # Assumed: Ax # Assumed: a # Proof state: x : ℤ ⊢ (q a x) ⇒ (p x) ## Proof state: H : q a x, x : ℤ ⊢ p x ## Proof state: H : q a x, x : ℤ ⊢ q a x ## Proof state: no goals ## Proved: T #