Theorem cdleme42mgN 35776

Description: Part of proof of Lemma E in [Crawley] p. 113. TODO: FIX COMMENT . f preserves join: f(r \/ s) = f(r) \/ s, p. 115 10th line from bottom. TODO: Use instead of cdleme42mN 35775? Combine with cdleme42mN 35775? (Contributed by NM, 20-Mar-2013.) (New usage is discouraged.)

Hypotheses

Ref	Expression
cdleme41.b	|- B = ( Base ` K )
cdleme41.l	|- .<_ = ( le ` K )
cdleme41.j	|- .\/ = ( join ` K )
cdleme41.m	|- ./\ = ( meet ` K )
cdleme41.a	|- A = ( Atoms ` K )
cdleme41.h	|- H = ( LHyp ` K )
cdleme41.u	|- U = ( ( P .\/ Q ) ./\ W )
cdleme41.d	|- D = ( ( s .\/ U ) ./\ ( Q .\/ ( ( P .\/ s ) ./\ W ) ) )
cdleme41.e	|- E = ( ( t .\/ U ) ./\ ( Q .\/ ( ( P .\/ t ) ./\ W ) ) )
cdleme41.g	|- G = ( ( P .\/ Q ) ./\ ( E .\/ ( ( s .\/ t ) ./\ W ) ) )
cdleme41.i	|- I = ( iota_ y e. B A. t e. A ( ( -. t .<_ W /\ -. t .<_ ( P .\/ Q ) ) -> y = G ) )
cdleme41.n	|- N = if ( s .<_ ( P .\/ Q ) , I , D )
cdleme41.o	|- O = ( iota_ z e. B A. s e. A ( ( -. s .<_ W /\ ( s .\/ ( x ./\ W ) ) = x ) -> z = ( N .\/ ( x ./\ W ) ) ) )
cdleme41.f	|- F = ( x e. B |-> if ( ( P =/= Q /\ -. x .<_ W ) , O , x ) )

Assertion

Ref	Expression
cdleme42mgN	|- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> ( F ` ( R .\/ S ) ) = ( ( F ` R ) .\/ ( F ` S ) ) )

Distinct variable groups:   A, s   .\/ , s   .<_ , s   ./\ , s   P, s   Q, s   R, s   S, s   U, s   W, s   y, t, A, s   B, s, t, y   y, D   y, G   E, s, y   H, s, t, y   t, .\/ , y   K, s, t, y   t, .<_ , y   t, ./\ , y   t, P, y   t, Q, y   t, R, y   t, S, y   t, U, y   t, W, y   x, z, A   x, B, z   z, E, s   z, H   x, .\/ , z   z, K   x, .<_ , z   x, ./\ , z   x, N, z   x, P, z   x, Q, z   x, R, z   x, S, z   x, U, z   x, W, z, s, t, y

Allowed substitution hints:   D( x, z, t, s)   E( x, t)   F( x, y, z, t, s)   G( x, z, t, s)   H( x)   I( x, y, z, t, s)   K( x)   N( y, t, s)   O( x, y, z, t, s)

Proof of Theorem cdleme42mgN

Step	Hyp	Ref	Expression
1		simpl1l 1112	. . . . 5 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> K e. HL )
2		hllat 34650	. . . . 5 |- ( K e. HL -> K e. Lat )
3	1, 2	syl 17	. . . 4 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> K e. Lat )
4		simprll 802	. . . . 5 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> R e. A )
5		cdleme41.b	. . . . . 6 |- B = ( Base ` K )
6		cdleme41.a	. . . . . 6 |- A = ( Atoms ` K )
7	5, 6	atbase 34576	. . . . 5 |- ( R e. A -> R e. B )
8	4, 7	syl 17	. . . 4 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> R e. B )
9		simprrl 804	. . . . 5 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> S e. A )
10	5, 6	atbase 34576	. . . . 5 |- ( S e. A -> S e. B )
11	9, 10	syl 17	. . . 4 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> S e. B )
12	3, 8, 11	3jca 1242	. . 3 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> ( K e. Lat /\ R e. B /\ S e. B ) )
13		cdleme41.j	. . . . . 6 |- .\/ = ( join ` K )
14	5, 13	latjcl 17051	. . . . 5 |- ( ( K e. Lat /\ R e. B /\ S e. B ) -> ( R .\/ S ) e. B )
15		cdleme41.f	. . . . . 6 |- F = ( x e. B |-> if ( ( P =/= Q /\ -. x .<_ W ) , O , x ) )
16	15	cdleme31id 35682	. . . . 5 |- ( ( ( R .\/ S ) e. B /\ P = Q ) -> ( F ` ( R .\/ S ) ) = ( R .\/ S ) )
17	14, 16	sylan 488	. . . 4 |- ( ( ( K e. Lat /\ R e. B /\ S e. B ) /\ P = Q ) -> ( F ` ( R .\/ S ) ) = ( R .\/ S ) )
18	15	cdleme31id 35682	. . . . . 6 |- ( ( R e. B /\ P = Q ) -> ( F ` R ) = R )
19	18	3ad2antl2 1224	. . . . 5 |- ( ( ( K e. Lat /\ R e. B /\ S e. B ) /\ P = Q ) -> ( F ` R ) = R )
20	15	cdleme31id 35682	. . . . . 6 |- ( ( S e. B /\ P = Q ) -> ( F ` S ) = S )
21	20	3ad2antl3 1225	. . . . 5 |- ( ( ( K e. Lat /\ R e. B /\ S e. B ) /\ P = Q ) -> ( F ` S ) = S )
22	19, 21	oveq12d 6668	. . . 4 |- ( ( ( K e. Lat /\ R e. B /\ S e. B ) /\ P = Q ) -> ( ( F ` R ) .\/ ( F ` S ) ) = ( R .\/ S ) )
23	17, 22	eqtr4d 2659	. . 3 |- ( ( ( K e. Lat /\ R e. B /\ S e. B ) /\ P = Q ) -> ( F ` ( R .\/ S ) ) = ( ( F ` R ) .\/ ( F ` S ) ) )
24	12, 23	sylan 488	. 2 |- ( ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) /\ P = Q ) -> ( F ` ( R .\/ S ) ) = ( ( F ` R ) .\/ ( F ` S ) ) )
25		simpll 790	. . 3 |- ( ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) /\ P =/= Q ) -> ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) )
26		simpr 477	. . 3 |- ( ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) /\ P =/= Q ) -> P =/= Q )
27		simplrl 800	. . 3 |- ( ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) /\ P =/= Q ) -> ( R e. A /\ -. R .<_ W ) )
28		simplrr 801	. . 3 |- ( ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) /\ P =/= Q ) -> ( S e. A /\ -. S .<_ W ) )
29		cdleme41.l	. . . 4 |- .<_ = ( le ` K )
30		cdleme41.m	. . . 4 |- ./\ = ( meet ` K )
31		cdleme41.h	. . . 4 |- H = ( LHyp ` K )
32		cdleme41.u	. . . 4 |- U = ( ( P .\/ Q ) ./\ W )
33		cdleme41.d	. . . 4 |- D = ( ( s .\/ U ) ./\ ( Q .\/ ( ( P .\/ s ) ./\ W ) ) )
34		cdleme41.e	. . . 4 |- E = ( ( t .\/ U ) ./\ ( Q .\/ ( ( P .\/ t ) ./\ W ) ) )
35		cdleme41.g	. . . 4 |- G = ( ( P .\/ Q ) ./\ ( E .\/ ( ( s .\/ t ) ./\ W ) ) )
36		cdleme41.i	. . . 4 |- I = ( iota_ y e. B A. t e. A ( ( -. t .<_ W /\ -. t .<_ ( P .\/ Q ) ) -> y = G ) )
37		cdleme41.n	. . . 4 |- N = if ( s .<_ ( P .\/ Q ) , I , D )
38		cdleme41.o	. . . 4 |- O = ( iota_ z e. B A. s e. A ( ( -. s .<_ W /\ ( s .\/ ( x ./\ W ) ) = x ) -> z = ( N .\/ ( x ./\ W ) ) ) )
39	5, 29, 13, 30, 6, 31, 32, 33, 34, 35, 36, 37, 38, 15	cdleme42mN 35775	. . 3 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> ( F ` ( R .\/ S ) ) = ( ( F ` R ) .\/ ( F ` S ) ) )
40	25, 26, 27, 28, 39	syl13anc 1328	. 2 |- ( ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) /\ P =/= Q ) -> ( F ` ( R .\/ S ) ) = ( ( F ` R ) .\/ ( F ` S ) ) )
41	24, 40	pm2.61dane 2881	1 |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( R e. A /\ -. R .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) ) -> ( F ` ( R .\/ S ) ) = ( ( F ` R ) .\/ ( F ` S ) ) )

Syntax hints:   -. wn 3   -> wi 4   /\ wa 384   /\ w3a 1037   = wceq 1483   e. wcel 1990   =/= wne 2794   A.wral 2912   ifcif 4086   class class class wbr 4653   |-> cmpt 4729   ` cfv 5888   iota_crio 6610  (class class class)co 6650   Basecbs 15857   lecple 15948   joincjn 16944   meetcmee 16945   Latclat 17045   Atomscatm 34550   HLchlt 34637   LHypclh 35270

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-riotaBAD 34239

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-iin 4523  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-1st 7168  df-2nd 7169  df-undef 7399  df-preset 16928  df-poset 16946  df-plt 16958  df-lub 16974  df-glb 16975  df-join 16976  df-meet 16977  df-p0 17039  df-p1 17040  df-lat 17046  df-clat 17108  df-oposet 34463  df-ol 34465  df-oml 34466  df-covers 34553  df-ats 34554  df-atl 34585  df-cvlat 34609  df-hlat 34638  df-llines 34784  df-lplanes 34785  df-lvols 34786  df-lines 34787  df-psubsp 34789  df-pmap 34790  df-padd 35082  df-lhyp 35274

This theorem is referenced by:  cdlemg2jlemOLDN  35881