Metamath Proof Explorer


Theorem cdlemksat

Description: Part of proof of Lemma K of Crawley p. 118. (Contributed by NM, 27-Jun-2013)

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

Proof

Step Hyp Ref Expression
1 cdlemk.b
 |-  B = ( Base ` K )
2 cdlemk.l
 |-  .<_ = ( le ` K )
3 cdlemk.j
 |-  .\/ = ( join ` K )
4 cdlemk.a
 |-  A = ( Atoms ` K )
5 cdlemk.h
 |-  H = ( LHyp ` K )
6 cdlemk.t
 |-  T = ( ( LTrn ` K ) ` W )
7 cdlemk.r
 |-  R = ( ( trL ` K ) ` W )
8 cdlemk.m
 |-  ./\ = ( meet ` K )
9 cdlemk.s
 |-  S = ( f e. T |-> ( iota_ i e. T ( i ` P ) = ( ( P .\/ ( R ` f ) ) ./\ ( ( N ` P ) .\/ ( R ` ( f o. `' F ) ) ) ) ) )
10 simp11
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ G e. T ) /\ ( N e. T /\ ( P e. A /\ -. P .<_ W ) /\ ( R ` F ) = ( R ` N ) ) /\ ( F =/= ( _I |` B ) /\ G =/= ( _I |` B ) /\ ( R ` G ) =/= ( R ` F ) ) ) -> ( K e. HL /\ W e. H ) )
11 1 2 3 4 5 6 7 8 9 cdlemksel
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ G e. T ) /\ ( N e. T /\ ( P e. A /\ -. P .<_ W ) /\ ( R ` F ) = ( R ` N ) ) /\ ( F =/= ( _I |` B ) /\ G =/= ( _I |` B ) /\ ( R ` G ) =/= ( R ` F ) ) ) -> ( S ` G ) e. T )
12 simp22l
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ G e. T ) /\ ( N e. T /\ ( P e. A /\ -. P .<_ W ) /\ ( R ` F ) = ( R ` N ) ) /\ ( F =/= ( _I |` B ) /\ G =/= ( _I |` B ) /\ ( R ` G ) =/= ( R ` F ) ) ) -> P e. A )
13 2 4 5 6 ltrnat
 |-  ( ( ( K e. HL /\ W e. H ) /\ ( S ` G ) e. T /\ P e. A ) -> ( ( S ` G ) ` P ) e. A )
14 10 11 12 13 syl3anc
 |-  ( ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ G e. T ) /\ ( N e. T /\ ( P e. A /\ -. P .<_ W ) /\ ( R ` F ) = ( R ` N ) ) /\ ( F =/= ( _I |` B ) /\ G =/= ( _I |` B ) /\ ( R ` G ) =/= ( R ` F ) ) ) -> ( ( S ` G ) ` P ) e. A )