## TPTP Problem File: SEV495^1.p

View Solutions - Solve Problem

```%------------------------------------------------------------------------------
% File     : SEV495^1 : TPTP v7.5.0. Released v7.0.0.
% Domain   : Analysis
% Problem  : SUPPORT_SUPPORT
% Version  : Especial.
% English  :

% Refs     : [Kal16] Kalisyk (2016), Email to Geoff Sutcliffe
% Source   : [Kal16]
% Names    : SUPPORT_SUPPORT_.p [Kal16]

% Status   : Theorem
% Rating   : 1.00 v7.2.0, 0.75 v7.1.0
% Syntax   : Number of formulae    :    9 (   0 unit;   5 type;   0 defn)
%            Number of atoms       :   68 (   7 equality;  48 variable)
%            Maximal formula depth :   17 (   9 average)
%            Number of connectives :   51 (   1   ~;   0   |;   1   &;  49   @)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%                                         (   0  ~|;   0  ~&)
%            Number of type conns  :   31 (  31   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    7 (   5   :;   0   =;   0  @=)
%                                         (   0  !!;   0  ??;   0 @@+;   0 @@-)
%            Number of variables   :   27 (   0 sgn;  17   !;   2   ?;   2   ^)
%                                         (  27   :;   6  !>;   0  ?*)
%                                         (   0  @-;   0  @+)
% SPC      : TH1_THM_EQU_NAR

% Comments : Exported from core HOL Light.
%------------------------------------------------------------------------------
thf('thf_const_const/sets/SETSPEC',type,(
'const/sets/SETSPEC':
!>[A: \$tType] :
( A > \$o > A > \$o ) )).

thf('thf_const_const/sets/IN',type,(
'const/sets/IN':
!>[A: \$tType] :
( A > ( A > \$o ) > \$o ) )).

thf('thf_const_const/sets/GSPEC',type,(
'const/sets/GSPEC':
!>[A: \$tType] :
( ( A > \$o ) > A > \$o ) )).

thf('thf_const_const/iterate/support',type,(
'const/iterate/support':
!>[B: \$tType,A: \$tType] :
( ( B > B > B ) > ( A > B ) > ( A > \$o ) > A > \$o ) )).

thf('thf_const_const/iterate/neutral',type,(
'const/iterate/neutral':
!>[A: \$tType] :
( ( A > A > A ) > A ) )).

thf('thm/sets/IN_ELIM_THM_1',axiom,(
! [A: \$tType,A0: A > \$o,A1: A] :
( ( 'const/sets/IN' @ A @ A1
@ ( 'const/sets/GSPEC' @ A
@ ^ [A2: A] :
? [A3: A] :
( 'const/sets/SETSPEC' @ A @ A2 @ ( A0 @ A3 ) @ A3 ) ) )
= ( A0 @ A1 ) ) )).

thf('thm/iterate/support_',axiom,(
! [B: \$tType,A: \$tType,A0: A > \$o,A1: A > B,A2: B > B > B] :
( ( 'const/iterate/support' @ B @ A @ A2 @ A1 @ A0 )
= ( 'const/sets/GSPEC' @ A
@ ^ [A3: A] :
? [A4: A] :
( 'const/sets/SETSPEC' @ A @ A3
@ ( ( 'const/sets/IN' @ A @ A4 @ A0 )
& ( ( A1 @ A4 )
!= ( 'const/iterate/neutral' @ B @ A2 ) ) )
@ A4 ) ) ) )).

thf('thm/sets/EXTENSION_',axiom,(
! [A: \$tType,A0: A > \$o,A1: A > \$o] :
( ( A0 = A1 )
= ( ! [A2: A] :
( ( 'const/sets/IN' @ A @ A2 @ A0 )
= ( 'const/sets/IN' @ A @ A2 @ A1 ) ) ) ) )).

thf('thm/iterate/SUPPORT_SUPPORT_',conjecture,(
! [A: \$tType,A0: \$tType,A1: A > A > A,A2: A0 > A,A3: A0 > \$o] :
( ( 'const/iterate/support' @ A @ A0 @ A1 @ A2 @ ( 'const/iterate/support' @ A @ A0 @ A1 @ A2 @ A3 ) )
= ( 'const/iterate/support' @ A @ A0 @ A1 @ A2 @ A3 ) ) )).

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