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Theorem cdleme19a 33669
Description: Part of proof of Lemma E in [Crawley] p. 113, 5th paragraph on p. 114, 1st line.  D represents s2. In their notation, we prove that if r  <_ s  \/ t, then s2=(s  \/ t)  /\ w. (Contributed by NM, 13-Nov-2012.)
Hypotheses
Ref Expression
cdleme19.l  |-  .<_  =  ( le `  K )
cdleme19.j  |-  .\/  =  ( join `  K )
cdleme19.m  |-  ./\  =  ( meet `  K )
cdleme19.a  |-  A  =  ( Atoms `  K )
cdleme19.h  |-  H  =  ( LHyp `  K
)
cdleme19.u  |-  U  =  ( ( P  .\/  Q )  ./\  W )
cdleme19.f  |-  F  =  ( ( S  .\/  U )  ./\  ( Q  .\/  ( ( P  .\/  S )  ./\  W )
) )
cdleme19.g  |-  G  =  ( ( T  .\/  U )  ./\  ( Q  .\/  ( ( P  .\/  T )  ./\  W )
) )
cdleme19.d  |-  D  =  ( ( R  .\/  S )  ./\  W )
cdleme19.y  |-  Y  =  ( ( R  .\/  T )  ./\  W )
Assertion
Ref Expression
cdleme19a  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  D  =  ( ( S 
.\/  T )  ./\  W ) )

Proof of Theorem cdleme19a
StepHypRef Expression
1 cdleme19.d . 2  |-  D  =  ( ( R  .\/  S )  ./\  W )
2 eqid 2441 . . . 4  |-  ( Base `  K )  =  (
Base `  K )
3 cdleme19.l . . . 4  |-  .<_  =  ( le `  K )
4 hllat 32730 . . . . 5  |-  ( K  e.  HL  ->  K  e.  Lat )
543ad2ant1 1004 . . . 4  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  K  e.  Lat )
6 simp1 983 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  K  e.  HL )
7 simp21 1016 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  R  e.  A )
8 simp22 1017 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  S  e.  A )
9 cdleme19.j . . . . . 6  |-  .\/  =  ( join `  K )
10 cdleme19.a . . . . . 6  |-  A  =  ( Atoms `  K )
112, 9, 10hlatjcl 32733 . . . . 5  |-  ( ( K  e.  HL  /\  R  e.  A  /\  S  e.  A )  ->  ( R  .\/  S
)  e.  ( Base `  K ) )
126, 7, 8, 11syl3anc 1213 . . . 4  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  ( R  .\/  S )  e.  ( Base `  K
) )
13 simp23 1018 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  T  e.  A )
142, 9, 10hlatjcl 32733 . . . . 5  |-  ( ( K  e.  HL  /\  S  e.  A  /\  T  e.  A )  ->  ( S  .\/  T
)  e.  ( Base `  K ) )
156, 8, 13, 14syl3anc 1213 . . . 4  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  ( S  .\/  T )  e.  ( Base `  K
) )
16 simp33 1021 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  R  .<_  ( S  .\/  T
) )
173, 9, 10hlatlej1 32741 . . . . . 6  |-  ( ( K  e.  HL  /\  S  e.  A  /\  T  e.  A )  ->  S  .<_  ( S  .\/  T ) )
186, 8, 13, 17syl3anc 1213 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  S  .<_  ( S  .\/  T
) )
192, 10atbase 32656 . . . . . . 7  |-  ( R  e.  A  ->  R  e.  ( Base `  K
) )
207, 19syl 16 . . . . . 6  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  R  e.  ( Base `  K
) )
212, 10atbase 32656 . . . . . . 7  |-  ( S  e.  A  ->  S  e.  ( Base `  K
) )
228, 21syl 16 . . . . . 6  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  S  e.  ( Base `  K
) )
232, 3, 9latjle12 15228 . . . . . 6  |-  ( ( K  e.  Lat  /\  ( R  e.  ( Base `  K )  /\  S  e.  ( Base `  K )  /\  ( S  .\/  T )  e.  ( Base `  K
) ) )  -> 
( ( R  .<_  ( S  .\/  T )  /\  S  .<_  ( S 
.\/  T ) )  <-> 
( R  .\/  S
)  .<_  ( S  .\/  T ) ) )
245, 20, 22, 15, 23syl13anc 1215 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  (
( R  .<_  ( S 
.\/  T )  /\  S  .<_  ( S  .\/  T ) )  <->  ( R  .\/  S )  .<_  ( S 
.\/  T ) ) )
2516, 18, 24mpbi2and 907 . . . 4  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  ( R  .\/  S )  .<_  ( S  .\/  T ) )
263, 9, 10hlatlej2 32742 . . . . . 6  |-  ( ( K  e.  HL  /\  R  e.  A  /\  S  e.  A )  ->  S  .<_  ( R  .\/  S ) )
276, 7, 8, 26syl3anc 1213 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  S  .<_  ( R  .\/  S
) )
28 hlcvl 32726 . . . . . . . . 9  |-  ( K  e.  HL  ->  K  e.  CvLat )
29283ad2ant1 1004 . . . . . . . 8  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  K  e.  CvLat )
30 simp31 1019 . . . . . . . . 9  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  R  .<_  ( P  .\/  Q
) )
31 simp32 1020 . . . . . . . . 9  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  -.  S  .<_  ( P  .\/  Q ) )
32 nbrne2 4307 . . . . . . . . 9  |-  ( ( R  .<_  ( P  .\/  Q )  /\  -.  S  .<_  ( P  .\/  Q ) )  ->  R  =/=  S )
3330, 31, 32syl2anc 656 . . . . . . . 8  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  R  =/=  S )
343, 9, 10cvlatexch1 32703 . . . . . . . 8  |-  ( ( K  e.  CvLat  /\  ( R  e.  A  /\  T  e.  A  /\  S  e.  A )  /\  R  =/=  S
)  ->  ( R  .<_  ( S  .\/  T
)  ->  T  .<_  ( S  .\/  R ) ) )
3529, 7, 13, 8, 33, 34syl131anc 1226 . . . . . . 7  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  ( R  .<_  ( S  .\/  T )  ->  T  .<_  ( S  .\/  R ) ) )
3616, 35mpd 15 . . . . . 6  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  T  .<_  ( S  .\/  R
) )
379, 10hlatjcom 32734 . . . . . . 7  |-  ( ( K  e.  HL  /\  R  e.  A  /\  S  e.  A )  ->  ( R  .\/  S
)  =  ( S 
.\/  R ) )
386, 7, 8, 37syl3anc 1213 . . . . . 6  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  ( R  .\/  S )  =  ( S  .\/  R
) )
3936, 38breqtrrd 4315 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  T  .<_  ( R  .\/  S
) )
402, 10atbase 32656 . . . . . . 7  |-  ( T  e.  A  ->  T  e.  ( Base `  K
) )
4113, 40syl 16 . . . . . 6  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  T  e.  ( Base `  K
) )
422, 3, 9latjle12 15228 . . . . . 6  |-  ( ( K  e.  Lat  /\  ( S  e.  ( Base `  K )  /\  T  e.  ( Base `  K )  /\  ( R  .\/  S )  e.  ( Base `  K
) ) )  -> 
( ( S  .<_  ( R  .\/  S )  /\  T  .<_  ( R 
.\/  S ) )  <-> 
( S  .\/  T
)  .<_  ( R  .\/  S ) ) )
435, 22, 41, 12, 42syl13anc 1215 . . . . 5  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  (
( S  .<_  ( R 
.\/  S )  /\  T  .<_  ( R  .\/  S ) )  <->  ( S  .\/  T )  .<_  ( R 
.\/  S ) ) )
4427, 39, 43mpbi2and 907 . . . 4  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  ( S  .\/  T )  .<_  ( R  .\/  S ) )
452, 3, 5, 12, 15, 25, 44latasymd 15223 . . 3  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  ( R  .\/  S )  =  ( S  .\/  T
) )
4645oveq1d 6105 . 2  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  (
( R  .\/  S
)  ./\  W )  =  ( ( S 
.\/  T )  ./\  W ) )
471, 46syl5eq 2485 1  |-  ( ( K  e.  HL  /\  ( R  e.  A  /\  S  e.  A  /\  T  e.  A
)  /\  ( R  .<_  ( P  .\/  Q
)  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( S  .\/  T ) ) )  ->  D  =  ( ( S 
.\/  T )  ./\  W ) )
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 184    /\ wa 369    /\ w3a 960    = wceq 1364    e. wcel 1761    =/= wne 2604   class class class wbr 4289   ` cfv 5415  (class class class)co 6090   Basecbs 14170   lecple 14241   joincjn 15110   meetcmee 15111   Latclat 15211   Atomscatm 32630   CvLatclc 32632   HLchlt 32717   LHypclh 33350
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1596  ax-4 1607  ax-5 1675  ax-6 1713  ax-7 1733  ax-8 1763  ax-9 1765  ax-10 1780  ax-11 1785  ax-12 1797  ax-13 1948  ax-ext 2422  ax-rep 4400  ax-sep 4410  ax-nul 4418  ax-pow 4467  ax-pr 4528  ax-un 6371
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3an 962  df-tru 1367  df-ex 1592  df-nf 1595  df-sb 1706  df-eu 2261  df-mo 2262  df-clab 2428  df-cleq 2434  df-clel 2437  df-nfc 2566  df-ne 2606  df-ral 2718  df-rex 2719  df-reu 2720  df-rab 2722  df-v 2972  df-sbc 3184  df-csb 3286  df-dif 3328  df-un 3330  df-in 3332  df-ss 3339  df-nul 3635  df-if 3789  df-pw 3859  df-sn 3875  df-pr 3877  df-op 3881  df-uni 4089  df-iun 4170  df-br 4290  df-opab 4348  df-mpt 4349  df-id 4632  df-xp 4842  df-rel 4843  df-cnv 4844  df-co 4845  df-dm 4846  df-rn 4847  df-res 4848  df-ima 4849  df-iota 5378  df-fun 5417  df-fn 5418  df-f 5419  df-f1 5420  df-fo 5421  df-f1o 5422  df-fv 5423  df-riota 6049  df-ov 6093  df-oprab 6094  df-poset 15112  df-plt 15124  df-lub 15140  df-glb 15141  df-join 15142  df-meet 15143  df-p0 15205  df-lat 15212  df-covers 32633  df-ats 32634  df-atl 32665  df-cvlat 32689  df-hlat 32718
This theorem is referenced by:  cdleme19b  33670
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