## TPTP Problem File: SEV417^5.p

View Solutions - Solve Problem

```%------------------------------------------------------------------------------
% File     : SEV417^5 : TPTP v7.5.0. Released v4.0.0.
% Domain   : Set Theory
% Problem  : TPS problem from SETS-THMS
% Version  : Especial.
% English  :

% Refs     : [Bro09] Brown (2009), Email to Geoff Sutcliffe
% Source   : [Bro09]
% Names    : tps_0953 [Bro09]

% Status   : Theorem
% Rating   : 0.27 v7.5.0, 0.14 v7.4.0, 0.11 v7.2.0, 0.00 v7.1.0, 0.12 v7.0.0, 0.14 v6.4.0, 0.17 v6.3.0, 0.20 v6.2.0, 0.29 v6.1.0, 0.14 v5.5.0, 0.17 v5.4.0, 0.20 v5.3.0, 0.40 v4.1.0, 0.33 v4.0.1, 0.67 v4.0.0
% Syntax   : Number of formulae    :    3 (   0 unit;   2 type;   0 defn)
%            Number of atoms       :   24 (   2 equality;  17 variable)
%            Maximal formula depth :   12 (   6 average)
%            Number of connectives :   19 (   0   ~;   0   |;   6   &;  10   @)
%                                         (   0 <=>;   3  =>;   0  <=;   0 <~>)
%                                         (   0  ~|;   0  ~&)
%            Number of type conns  :    5 (   5   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    5 (   2   :;   0   =)
%            Number of variables   :   10 (   3 sgn;   5   !;   0   ?;   5   ^)
%                                         (  10   :;   0  !>;   0  ?*)
%                                         (   0  @-;   0  @+)
% SPC      : TH0_THM_EQU_NAR

% Comments : This problem is from the TPS library. Copyright (c) 2009 The TPS
%            project in the Department of Mathematical Sciences at Carnegie
%------------------------------------------------------------------------------
thf(a_type,type,(
a: \$tType )).

thf(cP,type,(
cP: ( a > \$o ) > \$o )).

thf(cTHM502_pme,conjecture,(
! [X: a > \$o,Y: a > \$o,Z: a > \$o] :
( ( ! [Xx: a] :
( ( X @ Xx )
=> ( Y @ Xx ) )
& ! [Xx: a] :
( ( X @ Xx )
=> ( Z @ Xx ) )
& ( ( ^ [Xx: a] :
( ( Y @ Xx )
& ( Z @ Xx ) ) )
= ( ^ [Xx: a] : \$false ) )
& ( cP
@ ^ [Xx: a] :
( ( Y @ Xx )
& ( Z @ Xx ) ) ) )
=> ( ( X
= ( ^ [Xx: a] : \$false ) )
& ( cP
@ ^ [Xx: a] : \$false ) ) ) )).

%------------------------------------------------------------------------------
```