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Theorem cdleme20l1 30956
Description: Part of proof of Lemma E in [Crawley] p. 113, last paragraph on p. 114, penultimate line.  D,  F,  Y,  G represent s2, f(s), t2, f(t) respectively. (Contributed by NM, 20-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 )
cdleme20.v  |-  V  =  ( ( S  .\/  T )  ./\  W )
Assertion
Ref Expression
cdleme20l1  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  ( F  .\/  D )  e.  ( LLines `  K )
)

Proof of Theorem cdleme20l1
StepHypRef Expression
1 simp11l 1068 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  K  e.  HL )
2 simp11 987 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  ( K  e.  HL  /\  W  e.  H ) )
3 simp12 988 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  ( P  e.  A  /\  -.  P  .<_  W ) )
4 simp13 989 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  ( Q  e.  A  /\  -.  Q  .<_  W ) )
5 simp22 991 . . . 4  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  S  e.  A )
6 simp23 992 . . . 4  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  -.  S  .<_  W )
75, 6jca 519 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  ( S  e.  A  /\  -.  S  .<_  W ) )
8 simp31 993 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  P  =/=  Q )
9 simp32 994 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  -.  S  .<_  ( P  .\/  Q ) )
10 cdleme19.l . . . 4  |-  .<_  =  ( le `  K )
11 cdleme19.j . . . 4  |-  .\/  =  ( join `  K )
12 cdleme19.m . . . 4  |-  ./\  =  ( meet `  K )
13 cdleme19.a . . . 4  |-  A  =  ( Atoms `  K )
14 cdleme19.h . . . 4  |-  H  =  ( LHyp `  K
)
15 cdleme19.u . . . 4  |-  U  =  ( ( P  .\/  Q )  ./\  W )
16 cdleme19.f . . . 4  |-  F  =  ( ( S  .\/  U )  ./\  ( Q  .\/  ( ( P  .\/  S )  ./\  W )
) )
1710, 11, 12, 13, 14, 15, 16cdleme3fa 30872 . . 3  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W )  /\  ( S  e.  A  /\  -.  S  .<_  W ) )  /\  ( P  =/=  Q  /\  -.  S  .<_  ( P 
.\/  Q ) ) )  ->  F  e.  A )
182, 3, 4, 7, 8, 9, 17syl132anc 1202 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  F  e.  A )
19 simp11r 1069 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  W  e.  H )
20 simp21 990 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  R  e.  A )
21 simp33 995 . . 3  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  R  .<_  ( P  .\/  Q
) )
22 cdleme19.d . . . 4  |-  D  =  ( ( R  .\/  S )  ./\  W )
2310, 11, 12, 13, 14, 22cdlemeda 30934 . . 3  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( S  e.  A  /\  -.  S  .<_  W )  /\  ( R  e.  A  /\  R  .<_  ( P  .\/  Q )  /\  -.  S  .<_  ( P  .\/  Q
) ) )  ->  D  e.  A )
241, 19, 5, 6, 20, 21, 9, 23syl223anc 1210 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  D  e.  A )
2510, 11, 12, 13, 14, 15, 16, 16, 22, 22cdleme19c 30941 . . 3  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W )  /\  ( S  e.  A  /\  -.  S  .<_  W ) )  /\  ( R  e.  A  /\  P  =/=  Q  /\  -.  S  .<_  ( P 
.\/  Q ) ) )  ->  F  =/=  D )
261, 19, 3, 4, 7, 20, 8, 9, 25syl233anc 1213 . 2  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  F  =/=  D )
27 eqid 2435 . . 3  |-  ( LLines `  K )  =  (
LLines `  K )
2811, 13, 27llni2 30148 . 2  |-  ( ( ( K  e.  HL  /\  F  e.  A  /\  D  e.  A )  /\  F  =/=  D
)  ->  ( F  .\/  D )  e.  (
LLines `  K ) )
291, 18, 24, 26, 28syl31anc 1187 1  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( P  e.  A  /\  -.  P  .<_  W )  /\  ( Q  e.  A  /\  -.  Q  .<_  W ) )  /\  ( R  e.  A  /\  S  e.  A  /\  -.  S  .<_  W )  /\  ( P  =/= 
Q  /\  -.  S  .<_  ( P  .\/  Q
)  /\  R  .<_  ( P  .\/  Q ) ) )  ->  ( F  .\/  D )  e.  ( LLines `  K )
)
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 359    /\ w3a 936    = wceq 1652    e. wcel 1725    =/= wne 2598   class class class wbr 4204   ` cfv 5445  (class class class)co 6072   lecple 13524   joincjn 14389   meetcmee 14390   Atomscatm 29900   HLchlt 29987   LLinesclln 30127   LHypclh 30620
This theorem is referenced by:  cdleme20l2  30957  cdleme20l  30958
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-13 1727  ax-14 1729  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2416  ax-rep 4312  ax-sep 4322  ax-nul 4330  ax-pow 4369  ax-pr 4395  ax-un 4692
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-eu 2284  df-mo 2285  df-clab 2422  df-cleq 2428  df-clel 2431  df-nfc 2560  df-ne 2600  df-nel 2601  df-ral 2702  df-rex 2703  df-reu 2704  df-rab 2706  df-v 2950  df-sbc 3154  df-csb 3244  df-dif 3315  df-un 3317  df-in 3319  df-ss 3326  df-nul 3621  df-if 3732  df-pw 3793  df-sn 3812  df-pr 3813  df-op 3815  df-uni 4008  df-iun 4087  df-iin 4088  df-br 4205  df-opab 4259  df-mpt 4260  df-id 4490  df-xp 4875  df-rel 4876  df-cnv 4877  df-co 4878  df-dm 4879  df-rn 4880  df-res 4881  df-ima 4882  df-iota 5409  df-fun 5447  df-fn 5448  df-f 5449  df-f1 5450  df-fo 5451  df-f1o 5452  df-fv 5453  df-ov 6075  df-oprab 6076  df-mpt2 6077  df-1st 6340  df-2nd 6341  df-undef 6534  df-riota 6540  df-poset 14391  df-plt 14403  df-lub 14419  df-glb 14420  df-join 14421  df-meet 14422  df-p0 14456  df-p1 14457  df-lat 14463  df-clat 14525  df-oposet 29813  df-ol 29815  df-oml 29816  df-covers 29903  df-ats 29904  df-atl 29935  df-cvlat 29959  df-hlat 29988  df-llines 30134  df-lines 30137  df-psubsp 30139  df-pmap 30140  df-padd 30432  df-lhyp 30624
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