16 lines
496 B
Text
16 lines
496 B
Text
rewrite_set NNF
|
||
add_rewrite not_not_eq not_true not_false not_neq not_and not_or not_iff not_implies not_forall
|
||
not_exists forall_and_distribute exists_and_distributer exists_and_distributel : NNF
|
||
|
||
variable p : Nat → Nat → Bool
|
||
variable f : Nat → Nat
|
||
variable g : Nat → Nat → Nat
|
||
|
||
(*
|
||
local t1 = parse_lean('¬ ∀ x, (∃ y, p x y ∨ p (f x) (f y)) ∨ f 0 = 1')
|
||
local t2, pr = simplify(t1, "NNF")
|
||
print(t1)
|
||
print("====>")
|
||
print(t2)
|
||
get_environment():type_check(pr)
|
||
*)
|