## TPTP Problem File: LCL582^1.p

View Solutions - Solve Problem

```%------------------------------------------------------------------------------
% File     : LCL582^1 : TPTP v7.4.0. Released v3.6.0.
% Domain   : Logical Calculi
% Problem  : Popkorn problem 3
% Version  : [BP09] axioms.
% English  :

% Refs     : [Pop95] Popkorn (1995), First Steps in Modal Logic
%          : [BP09]  Benzmueller & Paulson (2009), Exploring Properties of
% Source   : [BP09]
% Names    : K-c [BP09]

% Status   : CounterSatisfiable
%          : Standard semantics : CounterSatisfiable
% Rating   : 0.00 v4.0.0, 1.00 v3.7.0
% Syntax   : Number of formulae    :   39 (   0 unit;  23 type;  15 defn)
%            Number of atoms       :   85 (  15 equality;  40 variable)
%            Maximal formula depth :    9 (   5 average)
%            Number of connectives :   42 (   3   ~;   1   |;   2   &;  35   @)
%                                         (   0 <=>;   1  =>;   0  <=;   0 <~>)
%                                         (   0  ~|;   0  ~&)
%            Number of type conns  :   84 (  84   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   28 (  23   :;   0   =)
%            Number of variables   :   36 (   2 sgn;   4   !;   4   ?;  28   ^)
%                                         (  36   :;   0  !>;   0  ?*)
%                                         (   0  @-;   0  @+)
% SPC      : TH0_CSA_EQU_NAR

% Comments :
%------------------------------------------------------------------------------
%----Include simple maths definitions and axioms
include('Axioms/LCL008^0.ax').
%------------------------------------------------------------------------------
%----Signature
thf(a,type,(
a: \$i > \$o )).

thf(r,type,(
r: \$i > \$i > \$o )).

thf(s,type,(
s: \$i > \$i > \$o )).

%----Conjecture
thf(thm,conjecture,
( mvalid @ ( mimpl @ ( mbox @ r @ a ) @ ( mbox @ s @ a ) ) )).

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