Metamath Proof Explorer

Theorem cdlemk18-3N

Description: Part of proof of Lemma K of Crawley p. 118. Line 22 on p. 119. N , Y , O , D are k, sigma_2 (p), k_1, f_1. (Contributed by NM, 7-Jul-2013) (New usage is discouraged.)

Ref Expression
Hypotheses cdlemk3.b 
|- B = ( Base ` K )
cdlemk3.l 
|- .<_ = ( le ` K )
cdlemk3.j 
|- .\/ = ( join ` K )
cdlemk3.m 
|- ./\ = ( meet ` K )
cdlemk3.a 
|- A = ( Atoms ` K )
cdlemk3.h 
|- H = ( LHyp ` K )
cdlemk3.t 
|- T = ( ( LTrn ` K ) ` W )
cdlemk3.r 
|- R = ( ( trL ` K ) ` W )
cdlemk3.s 
|- S = ( f e. T |-> ( iota_ i e. T ( i ` P ) = ( ( P .\/ ( R ` f ) ) ./\ ( ( N ` P ) .\/ ( R ` ( f o. `' F ) ) ) ) ) )
cdlemk3.u1 
|- Y = ( d e. T , e e. T |-> ( iota_ j e. T ( j ` P ) = ( ( P .\/ ( R ` e ) ) ./\ ( ( ( S ` d ) ` P ) .\/ ( R ` ( e o. `' d ) ) ) ) ) )
Assertion cdlemk18-3N 
|- ( ( ( K e. HL /\ W e. H /\ ( R ` F ) = ( R ` N ) ) /\ ( F e. T /\ D e. T /\ N e. T ) /\ ( ( R ` D ) =/= ( R ` F ) /\ ( F =/= ( _I |` B ) /\ D =/= ( _I |` B ) ) /\ ( P e. A /\ -. P .<_ W ) ) ) -> ( ( D Y F ) ` P ) = ( N ` P ) )

Proof

Step Hyp Ref Expression
1 cdlemk3.b 
 |-  B = ( Base ` K )
2 cdlemk3.l 
 |-  .<_ = ( le ` K )
3 cdlemk3.j 
 |-  .\/ = ( join ` K )
4 cdlemk3.m 
 |-  ./\ = ( meet ` K )
5 cdlemk3.a 
 |-  A = ( Atoms ` K )
6 cdlemk3.h 
 |-  H = ( LHyp ` K )
7 cdlemk3.t 
 |-  T = ( ( LTrn ` K ) ` W )
8 cdlemk3.r 
 |-  R = ( ( trL ` K ) ` W )
9 cdlemk3.s 
 |-  S = ( f e. T |-> ( iota_ i e. T ( i ` P ) = ( ( P .\/ ( R ` f ) ) ./\ ( ( N ` P ) .\/ ( R ` ( f o. `' F ) ) ) ) ) )
10 cdlemk3.u1 
 |-  Y = ( d e. T , e e. T |-> ( iota_ j e. T ( j ` P ) = ( ( P .\/ ( R ` e ) ) ./\ ( ( ( S ` d ) ` P ) .\/ ( R ` ( e o. `' d ) ) ) ) ) )
11 simp22 
 |-  ( ( ( K e. HL /\ W e. H /\ ( R ` F ) = ( R ` N ) ) /\ ( F e. T /\ D e. T /\ N e. T ) /\ ( ( R ` D ) =/= ( R ` F ) /\ ( F =/= ( _I |` B ) /\ D =/= ( _I |` B ) ) /\ ( P e. A /\ -. P .<_ W ) ) ) -> D e. T )
12 simp21 
 |-  ( ( ( K e. HL /\ W e. H /\ ( R ` F ) = ( R ` N ) ) /\ ( F e. T /\ D e. T /\ N e. T ) /\ ( ( R ` D ) =/= ( R ` F ) /\ ( F =/= ( _I |` B ) /\ D =/= ( _I |` B ) ) /\ ( P e. A /\ -. P .<_ W ) ) ) -> F e. T )
13 eqid 
 |-  ( S ` D ) = ( S ` D )
14 eqid 
 |-  ( e e. T |-> ( iota_ j e. T ( j ` P ) = ( ( P .\/ ( R ` e ) ) ./\ ( ( ( S ` D ) ` P ) .\/ ( R ` ( e o. `' D ) ) ) ) ) ) = ( e e. T |-> ( iota_ j e. T ( j ` P ) = ( ( P .\/ ( R ` e ) ) ./\ ( ( ( S ` D ) ` P ) .\/ ( R ` ( e o. `' D ) ) ) ) ) )
15 1 2 3 4 5 6 7 8 9 10 13 14 cdlemkuu 
 |-  ( ( D e. T /\ F e. T ) -> ( D Y F ) = ( ( e e. T |-> ( iota_ j e. T ( j ` P ) = ( ( P .\/ ( R ` e ) ) ./\ ( ( ( S ` D ) ` P ) .\/ ( R ` ( e o. `' D ) ) ) ) ) ) ` F ) )
16 11 12 15 syl2anc 
 |-  ( ( ( K e. HL /\ W e. H /\ ( R ` F ) = ( R ` N ) ) /\ ( F e. T /\ D e. T /\ N e. T ) /\ ( ( R ` D ) =/= ( R ` F ) /\ ( F =/= ( _I |` B ) /\ D =/= ( _I |` B ) ) /\ ( P e. A /\ -. P .<_ W ) ) ) -> ( D Y F ) = ( ( e e. T |-> ( iota_ j e. T ( j ` P ) = ( ( P .\/ ( R ` e ) ) ./\ ( ( ( S ` D ) ` P ) .\/ ( R ` ( e o. `' D ) ) ) ) ) ) ` F ) )
17 16 fveq1d 
 |-  ( ( ( K e. HL /\ W e. H /\ ( R ` F ) = ( R ` N ) ) /\ ( F e. T /\ D e. T /\ N e. T ) /\ ( ( R ` D ) =/= ( R ` F ) /\ ( F =/= ( _I |` B ) /\ D =/= ( _I |` B ) ) /\ ( P e. A /\ -. P .<_ W ) ) ) -> ( ( D Y F ) ` P ) = ( ( ( e e. T |-> ( iota_ j e. T ( j ` P ) = ( ( P .\/ ( R ` e ) ) ./\ ( ( ( S ` D ) ` P ) .\/ ( R ` ( e o. `' D ) ) ) ) ) ) ` F ) ` P ) )
18 1 2 3 4 5 6 7 8 9 13 14 cdlemk18-2N 
 |-  ( ( ( K e. HL /\ W e. H /\ ( R ` F ) = ( R ` N ) ) /\ ( F e. T /\ D e. T /\ N e. T ) /\ ( ( R ` D ) =/= ( R ` F ) /\ ( F =/= ( _I |` B ) /\ D =/= ( _I |` B ) ) /\ ( P e. A /\ -. P .<_ W ) ) ) -> ( N ` P ) = ( ( ( e e. T |-> ( iota_ j e. T ( j ` P ) = ( ( P .\/ ( R ` e ) ) ./\ ( ( ( S ` D ) ` P ) .\/ ( R ` ( e o. `' D ) ) ) ) ) ) ` F ) ` P ) )
19 17 18 eqtr4d 
 |-  ( ( ( K e. HL /\ W e. H /\ ( R ` F ) = ( R ` N ) ) /\ ( F e. T /\ D e. T /\ N e. T ) /\ ( ( R ` D ) =/= ( R ` F ) /\ ( F =/= ( _I |` B ) /\ D =/= ( _I |` B ) ) /\ ( P e. A /\ -. P .<_ W ) ) ) -> ( ( D Y F ) ` P ) = ( N ` P ) )