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Description: TODO: FIX COMMENT. (Contributed by NM, 29-Apr-2013)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | cdlemg8.l | |- .<_ = ( le ` K ) |
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| cdlemg8.j | |- .\/ = ( join ` K ) |
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| cdlemg8.m | |- ./\ = ( meet ` K ) |
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| cdlemg8.a | |- A = ( Atoms ` K ) |
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| cdlemg8.h | |- H = ( LHyp ` K ) |
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| cdlemg8.t | |- T = ( ( LTrn ` K ) ` W ) |
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| Assertion | cdlemg8c | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( Q .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cdlemg8.l | |- .<_ = ( le ` K ) |
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| 2 | cdlemg8.j | |- .\/ = ( join ` K ) |
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| 3 | cdlemg8.m | |- ./\ = ( meet ` K ) |
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| 4 | cdlemg8.a | |- A = ( Atoms ` K ) |
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| 5 | cdlemg8.h | |- H = ( LHyp ` K ) |
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| 6 | cdlemg8.t | |- T = ( ( LTrn ` K ) ` W ) |
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| 7 | simp1 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( K e. HL /\ W e. H ) ) |
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| 8 | simp22 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( Q e. A /\ -. Q .<_ W ) ) |
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| 9 | simp21 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( P e. A /\ -. P .<_ W ) ) |
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| 10 | simp23 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> F e. T ) |
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| 11 | simp31 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> G e. T ) |
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| 12 | simp32 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) ) |
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| 13 | simp1l | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> K e. HL ) |
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| 14 | 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 ) ) |
| 15 | 7 11 9 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 ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( ( G ` P ) e. A /\ -. ( G ` P ) .<_ W ) ) |
| 16 | 1 4 5 6 | ltrnel | |- ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ ( ( G ` P ) e. A /\ -. ( G ` P ) .<_ W ) ) -> ( ( F ` ( G ` P ) ) e. A /\ -. ( F ` ( G ` P ) ) .<_ W ) ) |
| 17 | 16 | simpld | |- ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ ( ( G ` P ) e. A /\ -. ( G ` P ) .<_ W ) ) -> ( F ` ( G ` P ) ) e. A ) |
| 18 | 7 10 15 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 ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( F ` ( G ` P ) ) e. A ) |
| 19 | 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 ) ) |
| 20 | 7 11 8 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 ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( ( G ` Q ) e. A /\ -. ( G ` Q ) .<_ W ) ) |
| 21 | 1 4 5 6 | ltrnel | |- ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ ( ( G ` Q ) e. A /\ -. ( G ` Q ) .<_ W ) ) -> ( ( F ` ( G ` Q ) ) e. A /\ -. ( F ` ( G ` Q ) ) .<_ W ) ) |
| 22 | 21 | simpld | |- ( ( ( K e. HL /\ W e. H ) /\ F e. T /\ ( ( G ` Q ) e. A /\ -. ( G ` Q ) .<_ W ) ) -> ( F ` ( G ` Q ) ) e. A ) |
| 23 | 7 10 20 22 | syl3anc | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( F ` ( G ` Q ) ) e. A ) |
| 24 | 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 ) ) ) ) |
| 25 | 13 18 23 24 | syl3anc | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( ( F ` ( G ` Q ) ) .\/ ( F ` ( G ` P ) ) ) ) |
| 26 | simp21l | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> P e. A ) |
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| 27 | simp22l | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> Q e. A ) |
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| 28 | 2 4 | hlatjcom | |- ( ( K e. HL /\ P e. A /\ Q e. A ) -> ( P .\/ Q ) = ( Q .\/ P ) ) |
| 29 | 13 26 27 28 | syl3anc | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( P .\/ Q ) = ( Q .\/ P ) ) |
| 30 | 12 25 29 | 3eqtr3d | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( ( F ` ( G ` Q ) ) .\/ ( F ` ( G ` P ) ) ) = ( Q .\/ P ) ) |
| 31 | simp33 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( F ` ( G ` P ) ) =/= P ) |
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| 32 | simpl1 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) /\ ( F ` ( G ` Q ) ) = Q ) -> ( K e. HL /\ W e. H ) ) |
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| 33 | simpl22 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) /\ ( F ` ( G ` Q ) ) = Q ) -> ( Q e. A /\ -. Q .<_ W ) ) |
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| 34 | simpl21 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) /\ ( F ` ( G ` Q ) ) = Q ) -> ( P e. A /\ -. P .<_ W ) ) |
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| 35 | simpl23 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) /\ ( F ` ( G ` Q ) ) = Q ) -> F e. T ) |
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| 36 | simpl31 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) /\ ( F ` ( G ` Q ) ) = Q ) -> G e. T ) |
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| 37 | simpr | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) /\ ( F ` ( G ` Q ) ) = Q ) -> ( F ` ( G ` Q ) ) = Q ) |
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| 38 | 1 4 5 6 | cdlemg6 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( Q e. A /\ -. Q .<_ W ) /\ ( P e. A /\ -. P .<_ W ) ) /\ ( F e. T /\ G e. T /\ ( F ` ( G ` Q ) ) = Q ) ) -> ( F ` ( G ` P ) ) = P ) |
| 39 | 32 33 34 35 36 37 38 | syl123anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) /\ ( F ` ( G ` Q ) ) = Q ) -> ( F ` ( G ` P ) ) = P ) |
| 40 | 39 | ex | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( ( F ` ( G ` Q ) ) = Q -> ( F ` ( G ` P ) ) = P ) ) |
| 41 | 40 | necon3d | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( ( F ` ( G ` P ) ) =/= P -> ( F ` ( G ` Q ) ) =/= Q ) ) |
| 42 | 31 41 | mpd | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( F ` ( G ` Q ) ) =/= Q ) |
| 43 | 1 2 3 4 5 6 | cdlemg8b | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( Q e. A /\ -. Q .<_ W ) /\ ( P e. A /\ -. P .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` Q ) ) .\/ ( F ` ( G ` P ) ) ) = ( Q .\/ P ) /\ ( F ` ( G ` Q ) ) =/= Q ) ) -> ( Q .\/ ( F ` ( G ` Q ) ) ) = ( Q .\/ P ) ) |
| 44 | 7 8 9 10 11 30 42 43 | syl133anc | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( Q .\/ ( F ` ( G ` Q ) ) ) = ( Q .\/ P ) ) |
| 45 | 44 29 | eqtr4d | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ F e. T ) /\ ( G e. T /\ ( ( F ` ( G ` P ) ) .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) /\ ( F ` ( G ` P ) ) =/= P ) ) -> ( Q .\/ ( F ` ( G ` Q ) ) ) = ( P .\/ Q ) ) |