1 include "logic/equality.ma".
3 (* Inclusion of: COL083-1.p *)
5 (* -------------------------------------------------------------------------- *)
7 (* File : COL083-1 : TPTP v3.7.0. Released v2.6.0. *)
9 (* Domain : Combinatory Logic *)
11 (* Problem : Compatible Birds, part 1 *)
13 (* Version : Especial. *)
17 (* Refs : [Smu85] Smullyan (1978), To Mock a Mocking Bird and Other Logi *)
23 (* Status : Unsatisfiable *)
25 (* Rating : 0.00 v2.6.0 *)
27 (* Syntax : Number of clauses : 3 ( 0 non-Horn; 3 unit; 1 RR) *)
29 (* Number of atoms : 3 ( 3 equality) *)
31 (* Maximal clause size : 1 ( 1 average) *)
33 (* Number of predicates : 1 ( 0 propositional; 2-2 arity) *)
35 (* Number of functors : 4 ( 2 constant; 0-2 arity) *)
37 (* Number of variables : 6 ( 2 singleton) *)
39 (* Maximal term depth : 3 ( 2 average) *)
41 (* Comments : A UEQ part of COL054-1 *)
43 (* -------------------------------------------------------------------------- *)
44 ntheorem prove_birds_are_compatible_1:
45 (∀Univ:Type.∀A:Univ.∀B:Univ.∀C:Univ.
47 ∀compose:∀_:Univ.∀_:Univ.Univ.
49 ∀response:∀_:Univ.∀_:Univ.Univ.
50 ∀H0:∀A:Univ.∀B:Univ.∀C:Univ.eq Univ (response (compose A B) C) (response A (response B C)).
51 ∀H1:∀A:Univ.eq Univ (response mocking_bird A) (response A A).∃A:Univ.∃B:Univ.eq Univ (response a A) B)
63 napply (ex_intro ? ? ? ?) ##[
65 napply (ex_intro ? ? ? ?) ##[
70 ntry (nassumption) ##;
73 (* -------------------------------------------------------------------------- *)