| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemg12.l |  |-  .<_ = ( le ` K ) | 
						
							| 2 |  | cdlemg12.j |  |-  .\/ = ( join ` K ) | 
						
							| 3 |  | cdlemg12.m |  |-  ./\ = ( meet ` K ) | 
						
							| 4 |  | cdlemg12.a |  |-  A = ( Atoms ` K ) | 
						
							| 5 |  | cdlemg12.h |  |-  H = ( LHyp ` K ) | 
						
							| 6 |  | cdlemg12.t |  |-  T = ( ( LTrn ` K ) ` W ) | 
						
							| 7 |  | cdlemg12b.r |  |-  R = ( ( trL ` K ) ` W ) | 
						
							| 8 |  | simp11 |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( K e. HL /\ W e. H ) ) | 
						
							| 9 |  | simp2l |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> F e. T ) | 
						
							| 10 |  | simp2r |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> G e. T ) | 
						
							| 11 |  | simp12 |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( P e. A /\ -. P .<_ W ) ) | 
						
							| 12 | 1 4 5 6 | ltrnel |  |-  ( ( ( K e. HL /\ W e. H ) /\ G e. T /\ ( P e. A /\ -. P .<_ W ) ) -> ( ( G ` P ) e. A /\ -. ( G ` P ) .<_ W ) ) | 
						
							| 13 | 8 10 11 12 | syl3anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( G ` P ) e. A /\ -. ( G ` P ) .<_ W ) ) | 
						
							| 14 | 1 2 3 4 5 6 7 | trlval2 |  |-  ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ ( ( G ` P ) e. A /\ -. ( G ` P ) .<_ W ) ) -> ( R ` F ) = ( ( ( G ` P ) .\/ ( F ` ( G ` P ) ) ) ./\ W ) ) | 
						
							| 15 | 8 9 13 14 | syl3anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( R ` F ) = ( ( ( G ` P ) .\/ ( F ` ( G ` P ) ) ) ./\ W ) ) | 
						
							| 16 |  | simp13 |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( Q e. A /\ -. Q .<_ W ) ) | 
						
							| 17 | 1 4 5 6 | ltrnel |  |-  ( ( ( K e. HL /\ W e. H ) /\ G e. T /\ ( Q e. A /\ -. Q .<_ W ) ) -> ( ( G ` Q ) e. A /\ -. ( G ` Q ) .<_ W ) ) | 
						
							| 18 | 8 10 16 17 | syl3anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( G ` Q ) e. A /\ -. ( G ` Q ) .<_ W ) ) | 
						
							| 19 | 1 2 3 4 5 6 7 | trlval2 |  |-  ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ ( ( G ` Q ) e. A /\ -. ( G ` Q ) .<_ W ) ) -> ( R ` F ) = ( ( ( G ` Q ) .\/ ( F ` ( G ` Q ) ) ) ./\ W ) ) | 
						
							| 20 | 8 9 18 19 | syl3anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( R ` F ) = ( ( ( G ` Q ) .\/ ( F ` ( G ` Q ) ) ) ./\ W ) ) | 
						
							| 21 | 15 20 | eqtr3d |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( ( G ` P ) .\/ ( F ` ( G ` P ) ) ) ./\ W ) = ( ( ( G ` Q ) .\/ ( F ` ( G ` Q ) ) ) ./\ W ) ) | 
						
							| 22 | 1 2 3 4 5 6 7 | cdlemg13a |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( P .\/ ( F ` ( G ` P ) ) ) = ( ( G ` P ) .\/ ( F ` ( G ` P ) ) ) ) | 
						
							| 23 | 22 | oveq1d |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( P .\/ ( F ` ( G ` P ) ) ) ./\ W ) = ( ( ( G ` P ) .\/ ( F ` ( G ` P ) ) ) ./\ W ) ) | 
						
							| 24 |  | simp2 |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( F e. T /\ G e. T ) ) | 
						
							| 25 |  | simp31 |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( F ` P ) =/= P ) | 
						
							| 26 | 1 4 5 6 | ltrnatneq |  |-  ( ( ( K e. HL /\ W e. H ) /\ ( F e. T /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F ` P ) =/= P ) -> ( F ` Q ) =/= Q ) | 
						
							| 27 | 8 9 11 16 25 26 | syl131anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( F ` Q ) =/= Q ) | 
						
							| 28 |  | simp32 |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( R ` F ) = ( R ` G ) ) | 
						
							| 29 |  | simp33 |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) | 
						
							| 30 |  | simp11l |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> K e. HL ) | 
						
							| 31 |  | simp12l |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> P e. A ) | 
						
							| 32 | 1 4 5 6 | ltrncoat |  |-  ( ( ( K e. HL /\ W e. H ) /\ ( F e. T /\ G e. T ) /\ P e. A ) -> ( F ` ( G ` P ) ) e. A ) | 
						
							| 33 | 8 24 31 32 | syl3anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( F ` ( G ` P ) ) e. A ) | 
						
							| 34 |  | simp13l |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> Q e. A ) | 
						
							| 35 | 1 4 5 6 | ltrncoat |  |-  ( ( ( K e. HL /\ W e. H ) /\ ( F e. T /\ G e. T ) /\ Q e. A ) -> ( F ` ( G ` Q ) ) e. A ) | 
						
							| 36 | 8 24 34 35 | syl3anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( F ` ( G ` Q ) ) e. A ) | 
						
							| 37 | 2 4 | hlatjcom |  |-  ( ( K e. HL /\ ( F ` ( G ` P ) ) e. A /\ ( F ` ( G ` Q ) ) e. A ) -> ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( ( F ` ( G ` Q ) ) .\/ ( F ` ( G ` P ) ) ) ) | 
						
							| 38 | 30 33 36 37 | syl3anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( ( F ` ( G ` Q ) ) .\/ ( F ` ( G ` P ) ) ) ) | 
						
							| 39 | 2 4 | hlatjcom |  |-  ( ( K e. HL /\ P e. A /\ Q e. A ) -> ( P .\/ Q ) = ( Q .\/ P ) ) | 
						
							| 40 | 30 31 34 39 | syl3anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( P .\/ Q ) = ( Q .\/ P ) ) | 
						
							| 41 | 29 38 40 | 3netr3d |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( F ` ( G ` Q ) ) .\/ ( F ` ( G ` P ) ) ) =/= ( Q .\/ P ) ) | 
						
							| 42 | 1 2 3 4 5 6 7 | cdlemg13a |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( Q e. A /\ -. Q .<_ W ) /\ ( P e. A /\ -. P .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` Q ) =/= Q /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` Q ) ) .\/ ( F ` ( G ` P ) ) ) =/= ( Q .\/ P ) ) ) -> ( Q .\/ ( F ` ( G ` Q ) ) ) = ( ( G ` Q ) .\/ ( F ` ( G ` Q ) ) ) ) | 
						
							| 43 | 8 16 11 24 27 28 41 42 | syl313anc |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( Q .\/ ( F ` ( G ` Q ) ) ) = ( ( G ` Q ) .\/ ( F ` ( G ` Q ) ) ) ) | 
						
							| 44 | 43 | oveq1d |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( Q .\/ ( F ` ( G ` Q ) ) ) ./\ W ) = ( ( ( G ` Q ) .\/ ( F ` ( G ` Q ) ) ) ./\ W ) ) | 
						
							| 45 | 21 23 44 | 3eqtr4d |  |-  ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( F e. T /\ G e. T ) /\ ( ( F ` P ) =/= P /\ ( R ` F ) = ( R ` G ) /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) =/= ( P .\/ Q ) ) ) -> ( ( P .\/ ( F ` ( G ` P ) ) ) ./\ W ) = ( ( Q .\/ ( F ` ( G ` Q ) ) ) ./\ W ) ) |