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Z3---4.15.1.UNS-Prf.s

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%------------------------------------------------------------------------------
% File     : Z3---4.15.1
% Problem  : COL042-9 : TPTP v9.0.0. Released v2.1.0.
% Transfm  : none
% Format   : tptp
% Command  : run_E %s %d THM

% Computer : n009.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Sat Jun 21 05:00:38 AM UTC 2025

% Result   : Unsatisfiable 0.19s 0.40s
% Output   : Proof 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   15
%            Number of leaves      :   19
% Syntax   : Number of formulae    :   66 (  51 unt;   0 typ;   0 def)
%            Number of atoms       :   85 (  82 equ)
%            Maximal formula atoms :    2 (   1 avg)
%            Number of connectives :   30 (  13   ~;   9   |;   0   &)
%                                         (   8 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    6 (   2 avg)
%            Maximal term depth    :    8 (   2 avg)
%            Number of FOOLs       :    2 (   2 fml;   0 var)
%            Number of types       :    1 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of predicates  :    3 (   1 usr;   1 prp; 0-2 aty)
%            Number of functors    :    5 (   5 usr;   4 con; 0-2 aty)
%            Number of variables   :   69 (  64   !;   0   ?;  69   :)

% Comments : 
%------------------------------------------------------------------------------
tff(apply_type,type,
    apply: ( $i * $i ) > $i ).

tff(fixed_pt_type,type,
    fixed_pt: $i ).

tff(strong_fixed_point_type,type,
    strong_fixed_point: $i ).

tff(b_type,type,
    b: $i ).

tff(w1_type,type,
    w1: $i ).

tff(1,plain,
    ( ( strong_fixed_point = apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))) )
  <=> ( strong_fixed_point = apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(2,axiom,
    strong_fixed_point = apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',strong_fixed_point) ).

tff(3,plain,
    strong_fixed_point = apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),
    inference(modus_ponens,[status(thm)],[2,1]) ).

tff(4,plain,
    apply(strong_fixed_point,fixed_pt) = apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),fixed_pt),
    inference(monotonicity,[status(thm)],[3]) ).

tff(5,plain,
    apply(fixed_pt,apply(strong_fixed_point,fixed_pt)) = apply(fixed_pt,apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),fixed_pt)),
    inference(monotonicity,[status(thm)],[4]) ).

tff(6,plain,
    apply(fixed_pt,apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),fixed_pt)) = apply(fixed_pt,apply(strong_fixed_point,fixed_pt)),
    inference(symmetry,[status(thm)],[5]) ).

tff(7,plain,
    ^ [Z: $i,Y: $i,X: $i] :
      refl(( ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
      <=> ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) ) )),
    inference(bind,[status(th)],[]) ).

tff(8,plain,
    ( ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
  <=> ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) ) ),
    inference(quant_intro,[status(thm)],[7]) ).

tff(9,plain,
    ( ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
  <=> ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(10,axiom,
    ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',b_definition) ).

tff(11,plain,
    ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) ),
    inference(modus_ponens,[status(thm)],[10,9]) ).

tff(12,plain,
    ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) ),
    inference(skolemize,[status(sab)],[11]) ).

tff(13,plain,
    ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) ),
    inference(modus_ponens,[status(thm)],[12,8]) ).

tff(14,plain,
    ( ~ ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
    | ( apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),fixed_pt) = apply(apply(w1,w1),apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt)) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(15,plain,
    apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),fixed_pt) = apply(apply(w1,w1),apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt)),
    inference(unit_resolution,[status(thm)],[14,13]) ).

tff(16,plain,
    apply(apply(w1,w1),apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt)) = apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),fixed_pt),
    inference(symmetry,[status(thm)],[15]) ).

tff(17,plain,
    ^ [Y: $i,X: $i] :
      refl(( ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) )
      <=> ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) ) )),
    inference(bind,[status(th)],[]) ).

tff(18,plain,
    ( ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) )
  <=> ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) ) ),
    inference(quant_intro,[status(thm)],[17]) ).

tff(19,plain,
    ( ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) )
  <=> ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(20,axiom,
    ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',w1_definition) ).

tff(21,plain,
    ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) ),
    inference(modus_ponens,[status(thm)],[20,19]) ).

tff(22,plain,
    ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) ),
    inference(skolemize,[status(sab)],[21]) ).

tff(23,plain,
    ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) ),
    inference(modus_ponens,[status(thm)],[22,18]) ).

tff(24,plain,
    ( ~ ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) )
    | ( apply(apply(w1,w1),apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt)) = apply(apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1),w1) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(25,plain,
    apply(apply(w1,w1),apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt)) = apply(apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1),w1),
    inference(unit_resolution,[status(thm)],[24,23]) ).

tff(26,plain,
    apply(apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1),w1) = apply(apply(w1,w1),apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt)),
    inference(symmetry,[status(thm)],[25]) ).

tff(27,plain,
    ( ~ ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
    | ( apply(apply(apply(b,b),b),fixed_pt) = apply(b,apply(b,fixed_pt)) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(28,plain,
    apply(apply(apply(b,b),b),fixed_pt) = apply(b,apply(b,fixed_pt)),
    inference(unit_resolution,[status(thm)],[27,13]) ).

tff(29,plain,
    apply(apply(apply(apply(b,b),b),fixed_pt),w1) = apply(apply(b,apply(b,fixed_pt)),w1),
    inference(monotonicity,[status(thm)],[28]) ).

tff(30,plain,
    apply(apply(b,apply(b,fixed_pt)),w1) = apply(apply(apply(apply(b,b),b),fixed_pt),w1),
    inference(symmetry,[status(thm)],[29]) ).

tff(31,plain,
    apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)) = apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)),
    inference(monotonicity,[status(thm)],[30]) ).

tff(32,plain,
    apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)) = apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),
    inference(symmetry,[status(thm)],[31]) ).

tff(33,plain,
    ( ~ ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
    | ( apply(apply(apply(b,w1),apply(apply(apply(b,b),b),fixed_pt)),w1) = apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(34,plain,
    apply(apply(apply(b,w1),apply(apply(apply(b,b),b),fixed_pt)),w1) = apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)),
    inference(unit_resolution,[status(thm)],[33,13]) ).

tff(35,plain,
    ( ~ ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
    | ( apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt) = apply(apply(b,w1),apply(apply(apply(b,b),b),fixed_pt)) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(36,plain,
    apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt) = apply(apply(b,w1),apply(apply(apply(b,b),b),fixed_pt)),
    inference(unit_resolution,[status(thm)],[35,13]) ).

tff(37,plain,
    apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1) = apply(apply(apply(b,w1),apply(apply(apply(b,b),b),fixed_pt)),w1),
    inference(monotonicity,[status(thm)],[36]) ).

tff(38,plain,
    apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1) = apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),
    inference(transitivity,[status(thm)],[37,34,32]) ).

tff(39,plain,
    apply(apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1),w1) = apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),w1),
    inference(monotonicity,[status(thm)],[38]) ).

tff(40,plain,
    apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),w1) = apply(apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1),w1),
    inference(symmetry,[status(thm)],[39]) ).

tff(41,plain,
    ( ~ ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) )
    | ( apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),w1) = apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(42,plain,
    apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),w1) = apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)),
    inference(unit_resolution,[status(thm)],[41,23]) ).

tff(43,plain,
    apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),w1),
    inference(symmetry,[status(thm)],[42]) ).

tff(44,plain,
    apply(apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)),
    inference(monotonicity,[status(thm)],[32]) ).

tff(45,plain,
    apply(apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),fixed_pt),
    inference(transitivity,[status(thm)],[44,43,40,26,16]) ).

tff(46,plain,
    apply(fixed_pt,apply(apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)),apply(apply(b,apply(b,fixed_pt)),w1))) = apply(fixed_pt,apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),apply(apply(b,b),b))),fixed_pt)),
    inference(monotonicity,[status(thm)],[45]) ).

tff(47,plain,
    ( ~ ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
    | ( apply(apply(apply(b,fixed_pt),apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1))),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(fixed_pt,apply(apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)),apply(apply(b,apply(b,fixed_pt)),w1))) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(48,plain,
    apply(apply(apply(b,fixed_pt),apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1))),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(fixed_pt,apply(apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)),apply(apply(b,apply(b,fixed_pt)),w1))),
    inference(unit_resolution,[status(thm)],[47,13]) ).

tff(49,plain,
    apply(apply(apply(b,w1),apply(apply(apply(b,b),b),fixed_pt)),w1) = apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1),
    inference(symmetry,[status(thm)],[37]) ).

tff(50,plain,
    apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)) = apply(apply(apply(b,w1),apply(apply(apply(b,b),b),fixed_pt)),w1),
    inference(symmetry,[status(thm)],[34]) ).

tff(51,plain,
    apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1)) = apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1),
    inference(transitivity,[status(thm)],[50,49]) ).

tff(52,plain,
    apply(apply(b,fixed_pt),apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1))) = apply(apply(b,fixed_pt),apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1)),
    inference(monotonicity,[status(thm)],[51]) ).

tff(53,plain,
    apply(apply(b,fixed_pt),apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1)) = apply(apply(b,fixed_pt),apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1))),
    inference(symmetry,[status(thm)],[52]) ).

tff(54,plain,
    apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1),
    inference(transitivity,[status(thm)],[31,50,49]) ).

tff(55,plain,
    apply(apply(b,fixed_pt),apply(w1,apply(apply(b,apply(b,fixed_pt)),w1))) = apply(apply(b,fixed_pt),apply(apply(apply(apply(b,apply(b,w1)),apply(apply(b,b),b)),fixed_pt),w1)),
    inference(monotonicity,[status(thm)],[54]) ).

tff(56,plain,
    ( ~ ! [Z: $i,Y: $i,X: $i] : ( apply(apply(apply(b,X),Y),Z) = apply(X,apply(Y,Z)) )
    | ( apply(apply(apply(b,apply(b,fixed_pt)),w1),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(b,fixed_pt),apply(w1,apply(apply(b,apply(b,fixed_pt)),w1))) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(57,plain,
    apply(apply(apply(b,apply(b,fixed_pt)),w1),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(b,fixed_pt),apply(w1,apply(apply(b,apply(b,fixed_pt)),w1))),
    inference(unit_resolution,[status(thm)],[56,13]) ).

tff(58,plain,
    apply(apply(apply(b,apply(b,fixed_pt)),w1),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(b,fixed_pt),apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1))),
    inference(transitivity,[status(thm)],[57,55,53]) ).

tff(59,plain,
    apply(apply(apply(apply(b,apply(b,fixed_pt)),w1),apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(apply(b,fixed_pt),apply(w1,apply(apply(apply(apply(b,b),b),fixed_pt),w1))),apply(apply(b,apply(b,fixed_pt)),w1)),
    inference(monotonicity,[status(thm)],[58]) ).

tff(60,plain,
    ( ~ ! [Y: $i,X: $i] : ( apply(apply(w1,X),Y) = apply(apply(Y,X),X) )
    | ( apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(apply(apply(b,apply(b,fixed_pt)),w1),apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)) ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(61,plain,
    apply(apply(w1,apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)) = apply(apply(apply(apply(b,apply(b,fixed_pt)),w1),apply(apply(b,apply(b,fixed_pt)),w1)),apply(apply(b,apply(b,fixed_pt)),w1)),
    inference(unit_resolution,[status(thm)],[60,23]) ).

tff(62,plain,
    apply(strong_fixed_point,fixed_pt) = apply(fixed_pt,apply(strong_fixed_point,fixed_pt)),
    inference(transitivity,[status(thm)],[4,15,25,39,42,61,59,48,46,6]) ).

tff(63,plain,
    ( ( apply(strong_fixed_point,fixed_pt) != apply(fixed_pt,apply(strong_fixed_point,fixed_pt)) )
  <=> ( apply(strong_fixed_point,fixed_pt) != apply(fixed_pt,apply(strong_fixed_point,fixed_pt)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(64,axiom,
    apply(strong_fixed_point,fixed_pt) != apply(fixed_pt,apply(strong_fixed_point,fixed_pt)),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_strong_fixed_point) ).

tff(65,plain,
    apply(strong_fixed_point,fixed_pt) != apply(fixed_pt,apply(strong_fixed_point,fixed_pt)),
    inference(modus_ponens,[status(thm)],[64,63]) ).

tff(66,plain,
    $false,
    inference(unit_resolution,[status(thm)],[65,62]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem    : COL042-9 : TPTP v9.0.0. Released v2.1.0.
% 0.00/0.12  % Command    : run_E %s %d THM
% 0.13/0.34  % Computer : n009.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit   : 300
% 0.13/0.34  % WCLimit    : 300
% 0.13/0.34  % DateTime   : Thu Jun 19 12:07:18 EDT 2025
% 0.13/0.34  % CPUTime    : 
% 0.19/0.40  % SZS status Unsatisfiable
% 0.19/0.40  % SZS output start Proof
% See solution above
% 0.19/0.41  % E exiting
%------------------------------------------------------------------------------