Metamath Proof Explorer

Theorem cdleme21c

Description: Part of proof of Lemma E in Crawley p. 115. (Contributed by NM, 28-Nov-2012)

Ref Expression
Hypotheses cdleme21.l 
|- .<_ = ( le ` K )
cdleme21.j 
|- .\/ = ( join ` K )
cdleme21.m 
|- ./\ = ( meet ` K )
cdleme21.a 
|- A = ( Atoms ` K )
cdleme21.h 
|- H = ( LHyp ` K )
cdleme21.u 
|- U = ( ( P .\/ Q ) ./\ W )
Assertion cdleme21c 
|- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> -. U .<_ ( S .\/ z ) )

Proof

Step Hyp Ref Expression
1 cdleme21.l 
 |-  .<_ = ( le ` K )
2 cdleme21.j 
 |-  .\/ = ( join ` K )
3 cdleme21.m 
 |-  ./\ = ( meet ` K )
4 cdleme21.a 
 |-  A = ( Atoms ` K )
5 cdleme21.h 
 |-  H = ( LHyp ` K )
6 cdleme21.u 
 |-  U = ( ( P .\/ Q ) ./\ W )
7 simp23 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> -. S .<_ ( P .\/ Q ) )
8 simp11l 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> K e. HL )
9 hlcvl 
 |-  ( K e. HL -> K e. CvLat )
10 8 9 syl 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> K e. CvLat )
11 simp12l 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> P e. A )
12 simp21 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> S e. A )
13 simp3l 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> z e. A )
14 simp13 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> Q e. A )
15 1 2 4 atnlej1 
 |-  ( ( K e. HL /\ ( S e. A /\ P e. A /\ Q e. A ) /\ -. S .<_ ( P .\/ Q ) ) -> S =/= P )
16 15 necomd 
 |-  ( ( K e. HL /\ ( S e. A /\ P e. A /\ Q e. A ) /\ -. S .<_ ( P .\/ Q ) ) -> P =/= S )
17 8 12 11 14 7 16 syl131anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> P =/= S )
18 simp3r 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( P .\/ z ) = ( S .\/ z ) )
19 4 2 cvlsupr7 
 |-  ( ( K e. CvLat /\ ( P e. A /\ S e. A /\ z e. A ) /\ ( P =/= S /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( P .\/ S ) = ( z .\/ S ) )
20 10 11 12 13 17 18 19 syl132anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( P .\/ S ) = ( z .\/ S ) )
21 2 4 hlatjcom 
 |-  ( ( K e. HL /\ z e. A /\ S e. A ) -> ( z .\/ S ) = ( S .\/ z ) )
22 8 13 12 21 syl3anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( z .\/ S ) = ( S .\/ z ) )
23 20 22 eqtrd 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( P .\/ S ) = ( S .\/ z ) )
24 23 breq2d 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( U .<_ ( P .\/ S ) <-> U .<_ ( S .\/ z ) ) )
25 simp11r 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> W e. H )
26 simp12r 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> -. P .<_ W )
27 simp22 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> P =/= Q )
28 1 2 3 4 5 6 cdleme0a 
 |-  ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ P =/= Q ) ) -> U e. A )
29 8 25 11 26 14 27 28 syl222anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> U e. A )
30 8 hllatd 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> K e. Lat )
31 eqid 
 |-  ( Base ` K ) = ( Base ` K )
32 31 2 4 hlatjcl 
 |-  ( ( K e. HL /\ P e. A /\ Q e. A ) -> ( P .\/ Q ) e. ( Base ` K ) )
33 8 11 14 32 syl3anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( P .\/ Q ) e. ( Base ` K ) )
34 31 5 lhpbase 
 |-  ( W e. H -> W e. ( Base ` K ) )
35 25 34 syl 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> W e. ( Base ` K ) )
36 31 1 3 latmle2 
 |-  ( ( K e. Lat /\ ( P .\/ Q ) e. ( Base ` K ) /\ W e. ( Base ` K ) ) -> ( ( P .\/ Q ) ./\ W ) .<_ W )
37 30 33 35 36 syl3anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( ( P .\/ Q ) ./\ W ) .<_ W )
38 6 37 eqbrtrid 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> U .<_ W )
39 nbrne2 
 |-  ( ( U .<_ W /\ -. P .<_ W ) -> U =/= P )
40 38 26 39 syl2anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> U =/= P )
41 1 2 4 cvlatexch1 
 |-  ( ( K e. CvLat /\ ( U e. A /\ S e. A /\ P e. A ) /\ U =/= P ) -> ( U .<_ ( P .\/ S ) -> S .<_ ( P .\/ U ) ) )
42 10 29 12 11 40 41 syl131anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( U .<_ ( P .\/ S ) -> S .<_ ( P .\/ U ) ) )
43 1 2 4 hlatlej1 
 |-  ( ( K e. HL /\ P e. A /\ Q e. A ) -> P .<_ ( P .\/ Q ) )
44 8 11 14 43 syl3anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> P .<_ ( P .\/ Q ) )
45 1 2 3 4 5 6 cdlemeulpq 
 |-  ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ Q e. A ) ) -> U .<_ ( P .\/ Q ) )
46 8 25 11 14 45 syl22anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> U .<_ ( P .\/ Q ) )
47 31 4 atbase 
 |-  ( P e. A -> P e. ( Base ` K ) )
48 11 47 syl 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> P e. ( Base ` K ) )
49 31 4 atbase 
 |-  ( U e. A -> U e. ( Base ` K ) )
50 29 49 syl 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> U e. ( Base ` K ) )
51 31 1 2 latjle12 
 |-  ( ( K e. Lat /\ ( P e. ( Base ` K ) /\ U e. ( Base ` K ) /\ ( P .\/ Q ) e. ( Base ` K ) ) ) -> ( ( P .<_ ( P .\/ Q ) /\ U .<_ ( P .\/ Q ) ) <-> ( P .\/ U ) .<_ ( P .\/ Q ) ) )
52 30 48 50 33 51 syl13anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( ( P .<_ ( P .\/ Q ) /\ U .<_ ( P .\/ Q ) ) <-> ( P .\/ U ) .<_ ( P .\/ Q ) ) )
53 44 46 52 mpbi2and 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( P .\/ U ) .<_ ( P .\/ Q ) )
54 31 4 atbase 
 |-  ( S e. A -> S e. ( Base ` K ) )
55 12 54 syl 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> S e. ( Base ` K ) )
56 31 2 4 hlatjcl 
 |-  ( ( K e. HL /\ P e. A /\ U e. A ) -> ( P .\/ U ) e. ( Base ` K ) )
57 8 11 29 56 syl3anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( P .\/ U ) e. ( Base ` K ) )
58 31 1 lattr 
 |-  ( ( K e. Lat /\ ( S e. ( Base ` K ) /\ ( P .\/ U ) e. ( Base ` K ) /\ ( P .\/ Q ) e. ( Base ` K ) ) ) -> ( ( S .<_ ( P .\/ U ) /\ ( P .\/ U ) .<_ ( P .\/ Q ) ) -> S .<_ ( P .\/ Q ) ) )
59 30 55 57 33 58 syl13anc 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( ( S .<_ ( P .\/ U ) /\ ( P .\/ U ) .<_ ( P .\/ Q ) ) -> S .<_ ( P .\/ Q ) ) )
60 53 59 mpan2d 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( S .<_ ( P .\/ U ) -> S .<_ ( P .\/ Q ) ) )
61 42 60 syld 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( U .<_ ( P .\/ S ) -> S .<_ ( P .\/ Q ) ) )
62 24 61 sylbird 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> ( U .<_ ( S .\/ z ) -> S .<_ ( P .\/ Q ) ) )
63 7 62 mtod 
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ Q e. A ) /\ ( S e. A /\ P =/= Q /\ -. S .<_ ( P .\/ Q ) ) /\ ( z e. A /\ ( P .\/ z ) = ( S .\/ z ) ) ) -> -. U .<_ ( S .\/ z ) )