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Theorem cdlemf2 34569
Description: Part of Lemma F in [Crawley] p. 116. (Contributed by NM, 12-Apr-2013.)
Hypotheses
Ref Expression
cdlemf1.l  |-  .<_  =  ( le `  K )
cdlemf1.j  |-  .\/  =  ( join `  K )
cdlemf1.a  |-  A  =  ( Atoms `  K )
cdlemf1.h  |-  H  =  ( LHyp `  K
)
cdlemf2.m  |-  ./\  =  ( meet `  K )
Assertion
Ref Expression
cdlemf2  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  ->  E. p  e.  A  E. q  e.  A  ( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p  .\/  q
)  ./\  W )
) )
Distinct variable groups:    q, p, A    H, p, q    K, p, q    .<_ , p, q    U, p, q    W, p, q
Allowed substitution hints:    .\/ ( q, p)    ./\ ( q, p)

Proof of Theorem cdlemf2
StepHypRef Expression
1 cdlemf1.l . . . 4  |-  .<_  =  ( le `  K )
2 cdlemf1.a . . . 4  |-  A  =  ( Atoms `  K )
3 cdlemf1.h . . . 4  |-  H  =  ( LHyp `  K
)
41, 2, 3lhpexnle 34013 . . 3  |-  ( ( K  e.  HL  /\  W  e.  H )  ->  E. p  e.  A  -.  p  .<_  W )
54adantr 465 . 2  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  ->  E. p  e.  A  -.  p  .<_  W )
6 cdlemf1.j . . . . . . 7  |-  .\/  =  ( join `  K )
71, 6, 2, 3cdlemf1 34568 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W )  /\  ( p  e.  A  /\  -.  p  .<_  W ) )  ->  E. q  e.  A  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) )
8 simpr1r 1046 . . . . . . . . . 10  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  -.  p  .<_  W )
9 simpr32 1079 . . . . . . . . . 10  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  -.  q  .<_  W )
10 simpr33 1080 . . . . . . . . . . . 12  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  U  .<_  ( p  .\/  q ) )
11 simplrr 760 . . . . . . . . . . . 12  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  U  .<_  W )
12 hllat 33371 . . . . . . . . . . . . . 14  |-  ( K  e.  HL  ->  K  e.  Lat )
1312ad3antrrr 729 . . . . . . . . . . . . 13  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  K  e.  Lat )
14 simplrl 759 . . . . . . . . . . . . . 14  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  U  e.  A )
15 eqid 2454 . . . . . . . . . . . . . . 15  |-  ( Base `  K )  =  (
Base `  K )
1615, 2atbase 33297 . . . . . . . . . . . . . 14  |-  ( U  e.  A  ->  U  e.  ( Base `  K
) )
1714, 16syl 16 . . . . . . . . . . . . 13  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  U  e.  ( Base `  K )
)
18 simplll 757 . . . . . . . . . . . . . 14  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  K  e.  HL )
19 simpr1l 1045 . . . . . . . . . . . . . 14  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  p  e.  A )
20 simpr2 995 . . . . . . . . . . . . . 14  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  q  e.  A )
2115, 6, 2hlatjcl 33374 . . . . . . . . . . . . . 14  |-  ( ( K  e.  HL  /\  p  e.  A  /\  q  e.  A )  ->  ( p  .\/  q
)  e.  ( Base `  K ) )
2218, 19, 20, 21syl3anc 1219 . . . . . . . . . . . . 13  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  ( p  .\/  q )  e.  (
Base `  K )
)
2315, 3lhpbase 34005 . . . . . . . . . . . . . 14  |-  ( W  e.  H  ->  W  e.  ( Base `  K
) )
2423ad3antlr 730 . . . . . . . . . . . . 13  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  W  e.  ( Base `  K )
)
25 cdlemf2.m . . . . . . . . . . . . . 14  |-  ./\  =  ( meet `  K )
2615, 1, 25latlem12 15371 . . . . . . . . . . . . 13  |-  ( ( K  e.  Lat  /\  ( U  e.  ( Base `  K )  /\  ( p  .\/  q )  e.  ( Base `  K
)  /\  W  e.  ( Base `  K )
) )  ->  (
( U  .<_  ( p 
.\/  q )  /\  U  .<_  W )  <->  U  .<_  ( ( p  .\/  q
)  ./\  W )
) )
2713, 17, 22, 24, 26syl13anc 1221 . . . . . . . . . . . 12  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  ( ( U  .<_  ( p  .\/  q )  /\  U  .<_  W )  <->  U  .<_  ( ( p  .\/  q
)  ./\  W )
) )
2810, 11, 27mpbi2and 912 . . . . . . . . . . 11  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  U  .<_  ( ( p  .\/  q
)  ./\  W )
)
29 hlatl 33368 . . . . . . . . . . . . 13  |-  ( K  e.  HL  ->  K  e.  AtLat )
3029ad3antrrr 729 . . . . . . . . . . . 12  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  K  e.  AtLat
)
31 simpll 753 . . . . . . . . . . . . 13  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  ( K  e.  HL  /\  W  e.  H ) )
32 simpr31 1078 . . . . . . . . . . . . 13  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  p  =/=  q )
331, 6, 25, 2, 3lhpat 34050 . . . . . . . . . . . . 13  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( p  e.  A  /\  -.  p  .<_  W )  /\  (
q  e.  A  /\  p  =/=  q ) )  ->  ( ( p 
.\/  q )  ./\  W )  e.  A )
3431, 19, 8, 20, 32, 33syl122anc 1228 . . . . . . . . . . . 12  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  ( (
p  .\/  q )  ./\  W )  e.  A
)
351, 2atcmp 33319 . . . . . . . . . . . 12  |-  ( ( K  e.  AtLat  /\  U  e.  A  /\  (
( p  .\/  q
)  ./\  W )  e.  A )  ->  ( U  .<_  ( ( p 
.\/  q )  ./\  W )  <->  U  =  (
( p  .\/  q
)  ./\  W )
) )
3630, 14, 34, 35syl3anc 1219 . . . . . . . . . . 11  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  ( U  .<_  ( ( p  .\/  q )  ./\  W
)  <->  U  =  (
( p  .\/  q
)  ./\  W )
) )
3728, 36mpbid 210 . . . . . . . . . 10  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  U  =  ( ( p  .\/  q )  ./\  W
) )
388, 9, 37jca31 534 . . . . . . . . 9  |-  ( ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  /\  ( ( p  e.  A  /\  -.  p  .<_  W )  /\  q  e.  A  /\  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) ) ) )  ->  ( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p  .\/  q
)  ./\  W )
) )
39383exp2 1206 . . . . . . . 8  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  ->  (
( p  e.  A  /\  -.  p  .<_  W )  ->  ( q  e.  A  ->  ( (
p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) )  -> 
( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p 
.\/  q )  ./\  W ) ) ) ) ) )
40393impia 1185 . . . . . . 7  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W )  /\  ( p  e.  A  /\  -.  p  .<_  W ) )  ->  ( q  e.  A  ->  ( (
p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) )  -> 
( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p 
.\/  q )  ./\  W ) ) ) ) )
4140reximdvai 2932 . . . . . 6  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W )  /\  ( p  e.  A  /\  -.  p  .<_  W ) )  ->  ( E. q  e.  A  ( p  =/=  q  /\  -.  q  .<_  W  /\  U  .<_  ( p  .\/  q ) )  ->  E. q  e.  A  ( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p  .\/  q
)  ./\  W )
) ) )
427, 41mpd 15 . . . . 5  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W )  /\  ( p  e.  A  /\  -.  p  .<_  W ) )  ->  E. q  e.  A  ( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p 
.\/  q )  ./\  W ) ) )
43423expia 1190 . . . 4  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  ->  (
( p  e.  A  /\  -.  p  .<_  W )  ->  E. q  e.  A  ( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p 
.\/  q )  ./\  W ) ) ) )
4443expd 436 . . 3  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  ->  (
p  e.  A  -> 
( -.  p  .<_  W  ->  E. q  e.  A  ( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p 
.\/  q )  ./\  W ) ) ) ) )
4544reximdvai 2932 . 2  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  ->  ( E. p  e.  A  -.  p  .<_  W  ->  E. p  e.  A  E. q  e.  A  ( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p 
.\/  q )  ./\  W ) ) ) )
465, 45mpd 15 1  |-  ( ( ( K  e.  HL  /\  W  e.  H )  /\  ( U  e.  A  /\  U  .<_  W ) )  ->  E. p  e.  A  E. q  e.  A  ( ( -.  p  .<_  W  /\  -.  q  .<_  W )  /\  U  =  ( ( p  .\/  q
)  ./\  W )
) )
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 184    /\ wa 369    /\ w3a 965    = wceq 1370    e. wcel 1758    =/= wne 2648   E.wrex 2800   class class class wbr 4403   ` cfv 5529  (class class class)co 6203   Basecbs 14296   lecple 14368   joincjn 15237   meetcmee 15238   Latclat 15338   Atomscatm 33271   AtLatcal 33272   HLchlt 33358   LHypclh 33991
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1592  ax-4 1603  ax-5 1671  ax-6 1710  ax-7 1730  ax-8 1760  ax-9 1762  ax-10 1777  ax-11 1782  ax-12 1794  ax-13 1955  ax-ext 2432  ax-rep 4514  ax-sep 4524  ax-nul 4532  ax-pow 4581  ax-pr 4642  ax-un 6485
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3an 967  df-tru 1373  df-ex 1588  df-nf 1591  df-sb 1703  df-eu 2266  df-mo 2267  df-clab 2440  df-cleq 2446  df-clel 2449  df-nfc 2604  df-ne 2650  df-ral 2804  df-rex 2805  df-reu 2806  df-rab 2808  df-v 3080  df-sbc 3295  df-csb 3399  df-dif 3442  df-un 3444  df-in 3446  df-ss 3453  df-nul 3749  df-if 3903  df-pw 3973  df-sn 3989  df-pr 3991  df-op 3995  df-uni 4203  df-iun 4284  df-br 4404  df-opab 4462  df-mpt 4463  df-id 4747  df-xp 4957  df-rel 4958  df-cnv 4959  df-co 4960  df-dm 4961  df-rn 4962  df-res 4963  df-ima 4964  df-iota 5492  df-fun 5531  df-fn 5532  df-f 5533  df-f1 5534  df-fo 5535  df-f1o 5536  df-fv 5537  df-riota 6164  df-ov 6206  df-oprab 6207  df-poset 15239  df-plt 15251  df-lub 15267  df-glb 15268  df-join 15269  df-meet 15270  df-p0 15332  df-p1 15333  df-lat 15339  df-clat 15401  df-oposet 33184  df-ol 33186  df-oml 33187  df-covers 33274  df-ats 33275  df-atl 33306  df-cvlat 33330  df-hlat 33359  df-lhyp 33995
This theorem is referenced by:  cdlemf  34570
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