1 include "logic/equality.ma".
3 (* Inclusion of: LAT143-1.p *)
5 (* ------------------------------------------------------------------------------ *)
7 (* File : LAT143-1 : TPTP v3.7.0. Released v3.1.0. *)
9 (* Domain : Lattice Theory *)
11 (* Problem : Huntington equation H24 implies H15 *)
13 (* Version : [McC05] (equality) axioms : Especial. *)
17 (* Refs : [McC05] McCune (2005), Email to Geoff Sutcliffe *)
19 (* Source : [McC05] *)
23 (* Status : Unsatisfiable *)
25 (* Rating : 0.11 v3.4.0, 0.25 v3.3.0, 0.21 v3.2.0, 0.14 v3.1.0 *)
27 (* Syntax : Number of clauses : 10 ( 0 non-Horn; 10 unit; 1 RR) *)
29 (* Number of atoms : 10 ( 10 equality) *)
31 (* Maximal clause size : 1 ( 1 average) *)
33 (* Number of predicates : 1 ( 0 propositional; 2-2 arity) *)
35 (* Number of functors : 5 ( 3 constant; 0-2 arity) *)
37 (* Number of variables : 19 ( 2 singleton) *)
39 (* Maximal term depth : 6 ( 3 average) *)
43 (* ------------------------------------------------------------------------------ *)
45 (* ----Include Lattice theory (equality) axioms *)
47 (* Inclusion of: Axioms/LAT001-0.ax *)
49 (* -------------------------------------------------------------------------- *)
51 (* File : LAT001-0 : TPTP v3.7.0. Released v1.0.0. *)
53 (* Domain : Lattice Theory *)
55 (* Axioms : Lattice theory (equality) axioms *)
57 (* Version : [McC88] (equality) axioms. *)
61 (* Refs : [Bum65] Bumcroft (1965), Proceedings of the Glasgow Mathematic *)
63 (* : [McC88] McCune (1988), Challenge Equality Problems in Lattice *)
65 (* : [Wos88] Wos (1988), Automated Reasoning - 33 Basic Research Pr *)
67 (* Source : [McC88] *)
73 (* Syntax : Number of clauses : 8 ( 0 non-Horn; 8 unit; 0 RR) *)
75 (* Number of atoms : 8 ( 8 equality) *)
77 (* Maximal clause size : 1 ( 1 average) *)
79 (* Number of predicates : 1 ( 0 propositional; 2-2 arity) *)
81 (* Number of functors : 2 ( 0 constant; 2-2 arity) *)
83 (* Number of variables : 16 ( 2 singleton) *)
85 (* Maximal term depth : 3 ( 2 average) *)
89 (* -------------------------------------------------------------------------- *)
91 (* ----The following 8 clauses characterise lattices *)
93 (* -------------------------------------------------------------------------- *)
95 (* ------------------------------------------------------------------------------ *)
97 (∀Univ:Type.∀X:Univ.∀Y:Univ.∀Z:Univ.
101 ∀join:∀_:Univ.∀_:Univ.Univ.
102 ∀meet:∀_:Univ.∀_:Univ.Univ.
103 ∀H0:∀X:Univ.∀Y:Univ.∀Z:Univ.eq Univ (join (meet X Y) (meet Y Z)) (join (meet X Y) (meet Y (join (meet X Y) (meet Z (join X Y))))).
104 ∀H1:∀X:Univ.∀Y:Univ.∀Z:Univ.eq Univ (join (join X Y) Z) (join X (join Y Z)).
105 ∀H2:∀X:Univ.∀Y:Univ.∀Z:Univ.eq Univ (meet (meet X Y) Z) (meet X (meet Y Z)).
106 ∀H3:∀X:Univ.∀Y:Univ.eq Univ (join X Y) (join Y X).
107 ∀H4:∀X:Univ.∀Y:Univ.eq Univ (meet X Y) (meet Y X).
108 ∀H5:∀X:Univ.∀Y:Univ.eq Univ (join X (meet X Y)) X.
109 ∀H6:∀X:Univ.∀Y:Univ.eq Univ (meet X (join X Y)) X.
110 ∀H7:∀X:Univ.eq Univ (join X X) X.
111 ∀H8:∀X:Univ.eq Univ (meet X X) X.eq Univ (meet a (join (meet a b) (meet a c))) (meet a (join (meet a b) (join (meet a c) (meet c (join a b))))))
131 nauto by H0,H1,H2,H3,H4,H5,H6,H7,H8 ##;
132 ntry (nassumption) ##;
135 (* ------------------------------------------------------------------------------ *)