TPTP Problem File: SYO297^5.p

View Solutions - Solve Problem

%------------------------------------------------------------------------------
% File     : SYO297^5 : TPTP v7.2.0. Released v4.0.0.
% Domain   : Syntactic
% Problem  : TPS problem from BASIC-HO-THMS
% Version  : Especial.
% English  :

% Refs     : [Bro09] Brown (2009), Email to Geoff Sutcliffe
% Source   : [Bro09]
% Names    : tps_0754 [Bro09]

% Status   : CounterSatisfiable
% Rating   : 0.33 v4.1.0, 0.00 v4.0.0
% Syntax   : Number of formulae    :    4 (   0 unit;   3 type;   0 defn)
%            Number of atoms       :    9 (   0 equality;   7 variable)
%            Maximal formula depth :    8 (   4 average)
%            Number of connectives :    8 (   0   ~;   0   |;   1   &;   5   @)
%                                         (   0 <=>;   2  =>;   0  <=;   0 <~>)
%                                         (   0  ~|;   0  ~&)
%            Number of type conns  :    2 (   2   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    5 (   3   :;   0   =)
%            Number of variables   :    3 (   0 sgn;   3   !;   0   ?;   0   ^)
%                                         (   3   :;   0  !>;   0  ?*)
%                                         (   0  @-;   0  @+)
% SPC      : TH0_CSA_NEQ_NAR

% Comments : This problem is from the TPS library. Copyright (c) 2009 The TPS
%            project in the Department of Mathematical Sciences at Carnegie
%            Mellon University. Distributed under the Creative Commons copyleft
%            license: http://creativecommons.org/licenses/by-sa/3.0/
%          : 
%------------------------------------------------------------------------------
thf(n_type,type,(
    n: $tType )).

thf(cS,type,(
    cS: n > n )).

thf(c0,type,(
    c0: n )).

thf(cPA_IND,conjecture,(
    ! [Xp: n > $o] :
      ( ( ( Xp @ c0 )
        & ! [Xx: n] :
            ( ( Xp @ Xx )
           => ( Xp @ ( cS @ Xx ) ) ) )
     => ! [Xx: n] :
          ( Xp @ Xx ) ) )).

%------------------------------------------------------------------------------