UNWIND_CONV : term -> thm
# UNWIND_CONV `?a b c d. b = 7 /\ 2 = d /\ a + b + c + d = 97`;; val it : thm = |- (?a b c d. b = 7 /\ 2 = d /\ a + b + c + d = 97) <=> (?a c. a + 7 + c + 2 = 97) # UNWIND_CONV `?w x y z. w = z /\ x = 1 /\ x + y = z /\ y = 42`;; val it : thm = |- (?w x y z. w = z /\ x = 1 /\ x + y = z /\ y = 42) <=> T # UNWIND_CONV `x = 2`;; Exception: Failure "CHANGED_CONV".