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Theorem cdleme21a 30439
Description: Part of proof of Lemma E in [Crawley] p. 115. (Contributed by NM, 28-Nov-2012.)
Hypotheses
Ref Expression
cdleme21a.l  |-  .<_  =  ( le `  K )
cdleme21a.j  |-  .\/  =  ( join `  K )
cdleme21a.a  |-  A  =  ( Atoms `  K )
Assertion
Ref Expression
cdleme21a  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  S  =/=  z )

Proof of Theorem cdleme21a
StepHypRef Expression
1 simp11 987 . . 3  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  K  e.  HL )
2 hlcvl 29474 . . 3  |-  ( K  e.  HL  ->  K  e.  CvLat )
31, 2syl 16 . 2  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  K  e.  CvLat )
4 simp12 988 . 2  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  P  e.  A )
5 simp2l 983 . 2  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  S  e.  A )
6 simp3l 985 . 2  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  -> 
z  e.  A )
7 simp13 989 . . 3  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  Q  e.  A )
8 simp2r 984 . . 3  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  -.  S  .<_  ( P 
.\/  Q ) )
9 cdleme21a.l . . . . 5  |-  .<_  =  ( le `  K )
10 cdleme21a.j . . . . 5  |-  .\/  =  ( join `  K )
11 cdleme21a.a . . . . 5  |-  A  =  ( Atoms `  K )
129, 10, 11atnlej1 29493 . . . 4  |-  ( ( K  e.  HL  /\  ( S  e.  A  /\  P  e.  A  /\  Q  e.  A
)  /\  -.  S  .<_  ( P  .\/  Q
) )  ->  S  =/=  P )
1312necomd 2633 . . 3  |-  ( ( K  e.  HL  /\  ( S  e.  A  /\  P  e.  A  /\  Q  e.  A
)  /\  -.  S  .<_  ( P  .\/  Q
) )  ->  P  =/=  S )
141, 5, 4, 7, 8, 13syl131anc 1197 . 2  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  P  =/=  S )
15 simp3r 986 . 2  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  -> 
( P  .\/  z
)  =  ( S 
.\/  z ) )
1611, 10cvlsupr6 29462 . . 3  |-  ( ( K  e.  CvLat  /\  ( P  e.  A  /\  S  e.  A  /\  z  e.  A )  /\  ( P  =/=  S  /\  ( P  .\/  z
)  =  ( S 
.\/  z ) ) )  ->  z  =/=  S )
1716necomd 2633 . 2  |-  ( ( K  e.  CvLat  /\  ( P  e.  A  /\  S  e.  A  /\  z  e.  A )  /\  ( P  =/=  S  /\  ( P  .\/  z
)  =  ( S 
.\/  z ) ) )  ->  S  =/=  z )
183, 4, 5, 6, 14, 15, 17syl132anc 1202 1  |-  ( ( ( K  e.  HL  /\  P  e.  A  /\  Q  e.  A )  /\  ( S  e.  A  /\  -.  S  .<_  ( P 
.\/  Q ) )  /\  ( z  e.  A  /\  ( P 
.\/  z )  =  ( S  .\/  z
) ) )  ->  S  =/=  z )
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 359    /\ w3a 936    = wceq 1649    e. wcel 1717    =/= wne 2550   class class class wbr 4153   ` cfv 5394  (class class class)co 6020   lecple 13463   joincjn 14328   Atomscatm 29378   CvLatclc 29380   HLchlt 29465
This theorem is referenced by:  cdleme21ct  30443  cdleme21d  30444
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1552  ax-5 1563  ax-17 1623  ax-9 1661  ax-8 1682  ax-13 1719  ax-14 1721  ax-6 1736  ax-7 1741  ax-11 1753  ax-12 1939  ax-ext 2368  ax-rep 4261  ax-sep 4271  ax-nul 4279  ax-pow 4318  ax-pr 4344  ax-un 4641
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1325  df-ex 1548  df-nf 1551  df-sb 1656  df-eu 2242  df-mo 2243  df-clab 2374  df-cleq 2380  df-clel 2383  df-nfc 2512  df-ne 2552  df-nel 2553  df-ral 2654  df-rex 2655  df-reu 2656  df-rab 2658  df-v 2901  df-sbc 3105  df-csb 3195  df-dif 3266  df-un 3268  df-in 3270  df-ss 3277  df-nul 3572  df-if 3683  df-pw 3744  df-sn 3763  df-pr 3764  df-op 3766  df-uni 3958  df-iun 4037  df-br 4154  df-opab 4208  df-mpt 4209  df-id 4439  df-xp 4824  df-rel 4825  df-cnv 4826  df-co 4827  df-dm 4828  df-rn 4829  df-res 4830  df-ima 4831  df-iota 5358  df-fun 5396  df-fn 5397  df-f 5398  df-f1 5399  df-fo 5400  df-f1o 5401  df-fv 5402  df-ov 6023  df-oprab 6024  df-mpt2 6025  df-1st 6288  df-2nd 6289  df-undef 6479  df-riota 6485  df-poset 14330  df-plt 14342  df-lub 14358  df-join 14360  df-lat 14402  df-covers 29381  df-ats 29382  df-atl 29413  df-cvlat 29437  df-hlat 29466
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