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Theorem 2llnjaN 34852
Description: The join of two different lattice lines in a lattice plane equals the plane (version of 2llnjN 34853 in terms of atoms). (Contributed by NM, 5-Jul-2012.) (New usage is discouraged.)
Hypotheses
Ref Expression
2llnja.l  |-  .<_  =  ( le `  K )
2llnja.j  |-  .\/  =  ( join `  K )
2llnja.a  |-  A  =  ( Atoms `  K )
2llnja.n  |-  N  =  ( LLines `  K )
2llnja.p  |-  P  =  ( LPlanes `  K )
Assertion
Ref Expression
2llnjaN  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) )  =  W )

Proof of Theorem 2llnjaN
StepHypRef Expression
1 eqid 2622 . 2  |-  ( Base `  K )  =  (
Base `  K )
2 2llnja.l . 2  |-  .<_  =  ( le `  K )
3 simpl1l 1112 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  K  e.  HL )
4 hllat 34650 . . 3  |-  ( K  e.  HL  ->  K  e.  Lat )
53, 4syl 17 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  K  e.  Lat )
6 simpl21 1139 . . . 4  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  Q  e.  A )
7 simpl22 1140 . . . 4  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  R  e.  A )
8 2llnja.j . . . . 5  |-  .\/  =  ( join `  K )
9 2llnja.a . . . . 5  |-  A  =  ( Atoms `  K )
101, 8, 9hlatjcl 34653 . . . 4  |-  ( ( K  e.  HL  /\  Q  e.  A  /\  R  e.  A )  ->  ( Q  .\/  R
)  e.  ( Base `  K ) )
113, 6, 7, 10syl3anc 1326 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( Q  .\/  R )  e.  (
Base `  K )
)
12 simpl31 1142 . . . 4  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  S  e.  A )
13 simpl32 1143 . . . 4  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  T  e.  A )
141, 8, 9hlatjcl 34653 . . . 4  |-  ( ( K  e.  HL  /\  S  e.  A  /\  T  e.  A )  ->  ( S  .\/  T
)  e.  ( Base `  K ) )
153, 12, 13, 14syl3anc 1326 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( S  .\/  T )  e.  (
Base `  K )
)
161, 8latjcl 17051 . . 3  |-  ( ( K  e.  Lat  /\  ( Q  .\/  R )  e.  ( Base `  K
)  /\  ( S  .\/  T )  e.  (
Base `  K )
)  ->  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) )  e.  ( Base `  K ) )
175, 11, 15, 16syl3anc 1326 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) )  e.  ( Base `  K ) )
18 simpl1r 1113 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  W  e.  P )
19 2llnja.p . . . 4  |-  P  =  ( LPlanes `  K )
201, 19lplnbase 34820 . . 3  |-  ( W  e.  P  ->  W  e.  ( Base `  K
) )
2118, 20syl 17 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  W  e.  ( Base `  K )
)
22 simpr1 1067 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( Q  .\/  R )  .<_  W )
23 simpr2 1068 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( S  .\/  T )  .<_  W )
241, 2, 8latjle12 17062 . . . 4  |-  ( ( K  e.  Lat  /\  ( ( Q  .\/  R )  e.  ( Base `  K )  /\  ( S  .\/  T )  e.  ( Base `  K
)  /\  W  e.  ( Base `  K )
) )  ->  (
( ( Q  .\/  R )  .<_  W  /\  ( S  .\/  T ) 
.<_  W )  <->  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) )  .<_  W )
)
255, 11, 15, 21, 24syl13anc 1328 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W )  <->  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) )  .<_  W )
)
2622, 23, 25mpbi2and 956 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) )  .<_  W )
271, 9atbase 34576 . . . . . . . . . 10  |-  ( T  e.  A  ->  T  e.  ( Base `  K
) )
2813, 27syl 17 . . . . . . . . 9  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  T  e.  ( Base `  K )
)
291, 8latjcl 17051 . . . . . . . . 9  |-  ( ( K  e.  Lat  /\  ( Q  .\/  R )  e.  ( Base `  K
)  /\  T  e.  ( Base `  K )
)  ->  ( ( Q  .\/  R )  .\/  T )  e.  ( Base `  K ) )
305, 11, 28, 29syl3anc 1326 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  T )  e.  ( Base `  K ) )
311, 9atbase 34576 . . . . . . . . . . 11  |-  ( S  e.  A  ->  S  e.  ( Base `  K
) )
3212, 31syl 17 . . . . . . . . . 10  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  S  e.  ( Base `  K )
)
331, 2, 8latlej2 17061 . . . . . . . . . 10  |-  ( ( K  e.  Lat  /\  S  e.  ( Base `  K )  /\  T  e.  ( Base `  K
) )  ->  T  .<_  ( S  .\/  T
) )
345, 32, 28, 33syl3anc 1326 . . . . . . . . 9  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  T  .<_  ( S  .\/  T ) )
351, 2, 8latjlej2 17066 . . . . . . . . . 10  |-  ( ( K  e.  Lat  /\  ( T  e.  ( Base `  K )  /\  ( S  .\/  T )  e.  ( Base `  K
)  /\  ( Q  .\/  R )  e.  (
Base `  K )
) )  ->  ( T  .<_  ( S  .\/  T )  ->  ( ( Q  .\/  R )  .\/  T )  .<_  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) ) ) )
365, 28, 15, 11, 35syl13anc 1328 . . . . . . . . 9  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( T  .<_  ( S  .\/  T
)  ->  ( ( Q  .\/  R )  .\/  T )  .<_  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) ) ) )
3734, 36mpd 15 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  T )  .<_  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) ) )
381, 2, 5, 30, 17, 21, 37, 26lattrd 17058 . . . . . . 7  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  T )  .<_  W )
39383adant3 1081 . . . . . 6  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( ( Q 
.\/  R )  .\/  T )  .<_  W )
40 simp11l 1172 . . . . . . 7  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  K  e.  HL )
41 simp121 1193 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  Q  e.  A
)
42 simp122 1194 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  R  e.  A
)
43 simp132 1197 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  T  e.  A
)
44 simp123 1195 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  Q  =/=  R
)
45 simp23 1096 . . . . . . . . 9  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )
46 simpl3 1066 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  /\  T  .<_  ( Q 
.\/  R ) )  ->  S  .<_  ( Q 
.\/  R ) )
47 simpr 477 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  /\  T  .<_  ( Q 
.\/  R ) )  ->  T  .<_  ( Q 
.\/  R ) )
481, 2, 8latjle12 17062 . . . . . . . . . . . . . . . . 17  |-  ( ( K  e.  Lat  /\  ( S  e.  ( Base `  K )  /\  T  e.  ( Base `  K )  /\  ( Q  .\/  R )  e.  ( Base `  K
) ) )  -> 
( ( S  .<_  ( Q  .\/  R )  /\  T  .<_  ( Q 
.\/  R ) )  <-> 
( S  .\/  T
)  .<_  ( Q  .\/  R ) ) )
495, 32, 28, 11, 48syl13anc 1328 . . . . . . . . . . . . . . . 16  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( S  .<_  ( Q  .\/  R )  /\  T  .<_  ( Q  .\/  R ) )  <->  ( S  .\/  T )  .<_  ( Q  .\/  R ) ) )
50493adant3 1081 . . . . . . . . . . . . . . 15  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( ( S 
.<_  ( Q  .\/  R
)  /\  T  .<_  ( Q  .\/  R ) )  <->  ( S  .\/  T )  .<_  ( Q  .\/  R ) ) )
5150adantr 481 . . . . . . . . . . . . . 14  |-  ( ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  /\  T  .<_  ( Q 
.\/  R ) )  ->  ( ( S 
.<_  ( Q  .\/  R
)  /\  T  .<_  ( Q  .\/  R ) )  <->  ( S  .\/  T )  .<_  ( Q  .\/  R ) ) )
5246, 47, 51mpbi2and 956 . . . . . . . . . . . . 13  |-  ( ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  /\  T  .<_  ( Q 
.\/  R ) )  ->  ( S  .\/  T )  .<_  ( Q  .\/  R ) )
53 simpl3 1066 . . . . . . . . . . . . . . . 16  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( S  e.  A  /\  T  e.  A  /\  S  =/= 
T ) )
542, 8, 9ps-1 34763 . . . . . . . . . . . . . . . 16  |-  ( ( K  e.  HL  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
)  /\  ( Q  e.  A  /\  R  e.  A ) )  -> 
( ( S  .\/  T )  .<_  ( Q  .\/  R )  <->  ( S  .\/  T )  =  ( Q  .\/  R ) ) )
553, 53, 6, 7, 54syl112anc 1330 . . . . . . . . . . . . . . 15  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( S  .\/  T )  .<_  ( Q  .\/  R )  <-> 
( S  .\/  T
)  =  ( Q 
.\/  R ) ) )
56553adant3 1081 . . . . . . . . . . . . . 14  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( ( S 
.\/  T )  .<_  ( Q  .\/  R )  <-> 
( S  .\/  T
)  =  ( Q 
.\/  R ) ) )
5756adantr 481 . . . . . . . . . . . . 13  |-  ( ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  /\  T  .<_  ( Q 
.\/  R ) )  ->  ( ( S 
.\/  T )  .<_  ( Q  .\/  R )  <-> 
( S  .\/  T
)  =  ( Q 
.\/  R ) ) )
5852, 57mpbid 222 . . . . . . . . . . . 12  |-  ( ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  /\  T  .<_  ( Q 
.\/  R ) )  ->  ( S  .\/  T )  =  ( Q 
.\/  R ) )
5958eqcomd 2628 . . . . . . . . . . 11  |-  ( ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  /\  T  .<_  ( Q 
.\/  R ) )  ->  ( Q  .\/  R )  =  ( S 
.\/  T ) )
6059ex 450 . . . . . . . . . 10  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( T  .<_  ( Q  .\/  R )  ->  ( Q  .\/  R )  =  ( S 
.\/  T ) ) )
6160necon3ad 2807 . . . . . . . . 9  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( ( Q 
.\/  R )  =/=  ( S  .\/  T
)  ->  -.  T  .<_  ( Q  .\/  R
) ) )
6245, 61mpd 15 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  -.  T  .<_  ( Q  .\/  R ) )
632, 8, 9, 19lplni2 34823 . . . . . . . 8  |-  ( ( K  e.  HL  /\  ( Q  e.  A  /\  R  e.  A  /\  T  e.  A
)  /\  ( Q  =/=  R  /\  -.  T  .<_  ( Q  .\/  R
) ) )  -> 
( ( Q  .\/  R )  .\/  T )  e.  P )
6440, 41, 42, 43, 44, 62, 63syl132anc 1344 . . . . . . 7  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( ( Q 
.\/  R )  .\/  T )  e.  P )
65 simp11r 1173 . . . . . . 7  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  W  e.  P
)
662, 19lplncmp 34848 . . . . . . 7  |-  ( ( K  e.  HL  /\  ( ( Q  .\/  R )  .\/  T )  e.  P  /\  W  e.  P )  ->  (
( ( Q  .\/  R )  .\/  T ) 
.<_  W  <->  ( ( Q 
.\/  R )  .\/  T )  =  W ) )
6740, 64, 65, 66syl3anc 1326 . . . . . 6  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( ( ( Q  .\/  R ) 
.\/  T )  .<_  W 
<->  ( ( Q  .\/  R )  .\/  T )  =  W ) )
6839, 67mpbid 222 . . . . 5  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( ( Q 
.\/  R )  .\/  T )  =  W )
69373adant3 1081 . . . . 5  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  ( ( Q 
.\/  R )  .\/  T )  .<_  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) ) )
7068, 69eqbrtrrd 4677 . . . 4  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  S  .<_  ( Q 
.\/  R ) )  ->  W  .<_  ( ( Q  .\/  R ) 
.\/  ( S  .\/  T ) ) )
71703expia 1267 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( S  .<_  ( Q  .\/  R
)  ->  W  .<_  ( ( Q  .\/  R
)  .\/  ( S  .\/  T ) ) ) )
721, 8latjcl 17051 . . . . . . . . 9  |-  ( ( K  e.  Lat  /\  ( Q  .\/  R )  e.  ( Base `  K
)  /\  S  e.  ( Base `  K )
)  ->  ( ( Q  .\/  R )  .\/  S )  e.  ( Base `  K ) )
735, 11, 32, 72syl3anc 1326 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  S )  e.  ( Base `  K ) )
741, 2, 8latlej1 17060 . . . . . . . . . 10  |-  ( ( K  e.  Lat  /\  S  e.  ( Base `  K )  /\  T  e.  ( Base `  K
) )  ->  S  .<_  ( S  .\/  T
) )
755, 32, 28, 74syl3anc 1326 . . . . . . . . 9  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  S  .<_  ( S  .\/  T ) )
761, 2, 8latjlej2 17066 . . . . . . . . . 10  |-  ( ( K  e.  Lat  /\  ( S  e.  ( Base `  K )  /\  ( S  .\/  T )  e.  ( Base `  K
)  /\  ( Q  .\/  R )  e.  (
Base `  K )
) )  ->  ( S  .<_  ( S  .\/  T )  ->  ( ( Q  .\/  R )  .\/  S )  .<_  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) ) ) )
775, 32, 15, 11, 76syl13anc 1328 . . . . . . . . 9  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( S  .<_  ( S  .\/  T
)  ->  ( ( Q  .\/  R )  .\/  S )  .<_  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) ) ) )
7875, 77mpd 15 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  S )  .<_  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) ) )
791, 2, 5, 73, 17, 21, 78, 26lattrd 17058 . . . . . . 7  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  S )  .<_  W )
80793adant3 1081 . . . . . 6  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  ( ( Q  .\/  R )  .\/  S )  .<_  W )
81 simp11l 1172 . . . . . . 7  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  K  e.  HL )
82 simp121 1193 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  Q  e.  A )
83 simp122 1194 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  R  e.  A )
84 simp131 1196 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  S  e.  A )
85 simp123 1195 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  Q  =/=  R )
86 simp3 1063 . . . . . . . 8  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  -.  S  .<_  ( Q  .\/  R
) )
872, 8, 9, 19lplni2 34823 . . . . . . . 8  |-  ( ( K  e.  HL  /\  ( Q  e.  A  /\  R  e.  A  /\  S  e.  A
)  /\  ( Q  =/=  R  /\  -.  S  .<_  ( Q  .\/  R
) ) )  -> 
( ( Q  .\/  R )  .\/  S )  e.  P )
8881, 82, 83, 84, 85, 86, 87syl132anc 1344 . . . . . . 7  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  ( ( Q  .\/  R )  .\/  S )  e.  P )
89 simp11r 1173 . . . . . . 7  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  W  e.  P )
902, 19lplncmp 34848 . . . . . . 7  |-  ( ( K  e.  HL  /\  ( ( Q  .\/  R )  .\/  S )  e.  P  /\  W  e.  P )  ->  (
( ( Q  .\/  R )  .\/  S ) 
.<_  W  <->  ( ( Q 
.\/  R )  .\/  S )  =  W ) )
9181, 88, 89, 90syl3anc 1326 . . . . . 6  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  ( (
( Q  .\/  R
)  .\/  S )  .<_  W  <->  ( ( Q 
.\/  R )  .\/  S )  =  W ) )
9280, 91mpbid 222 . . . . 5  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  ( ( Q  .\/  R )  .\/  S )  =  W )
93783adant3 1081 . . . . 5  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  ( ( Q  .\/  R )  .\/  S )  .<_  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) ) )
9492, 93eqbrtrrd 4677 . . . 4  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) )  /\  -.  S  .<_  ( Q  .\/  R ) )  ->  W  .<_  ( ( Q  .\/  R
)  .\/  ( S  .\/  T ) ) )
95943expia 1267 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( -.  S  .<_  ( Q  .\/  R )  ->  W  .<_  ( ( Q  .\/  R
)  .\/  ( S  .\/  T ) ) ) )
9671, 95pm2.61d 170 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  W  .<_  ( ( Q  .\/  R
)  .\/  ( S  .\/  T ) ) )
971, 2, 5, 17, 21, 26, 96latasymd 17057 1  |-  ( ( ( ( K  e.  HL  /\  W  e.  P )  /\  ( Q  e.  A  /\  R  e.  A  /\  Q  =/=  R )  /\  ( S  e.  A  /\  T  e.  A  /\  S  =/=  T
) )  /\  (
( Q  .\/  R
)  .<_  W  /\  ( S  .\/  T )  .<_  W  /\  ( Q  .\/  R )  =/=  ( S 
.\/  T ) ) )  ->  ( ( Q  .\/  R )  .\/  ( S  .\/  T ) )  =  W )
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 196    /\ wa 384    /\ w3a 1037    = wceq 1483    e. wcel 1990    =/= wne 2794   class class class wbr 4653   ` cfv 5888  (class class class)co 6650   Basecbs 15857   lecple 15948   joincjn 16944   Latclat 17045   Atomscatm 34550   HLchlt 34637   LLinesclln 34777   LPlanesclpl 34778
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-preset 16928  df-poset 16946  df-plt 16958  df-lub 16974  df-glb 16975  df-join 16976  df-meet 16977  df-p0 17039  df-lat 17046  df-clat 17108  df-oposet 34463  df-ol 34465  df-oml 34466  df-covers 34553  df-ats 34554  df-atl 34585  df-cvlat 34609  df-hlat 34638  df-llines 34784  df-lplanes 34785
This theorem is referenced by:  2llnjN  34853
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