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Description: Part of proof of Lemma E in Crawley p. 113, 3rd paragraph on p. 114,
" and
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | cdleme12.l | |- .<_ = ( le ` K ) |
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| cdleme12.j | |- .\/ = ( join ` K ) |
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| cdleme12.m | |- ./\ = ( meet ` K ) |
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| cdleme12.a | |- A = ( Atoms ` K ) |
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| cdleme12.h | |- H = ( LHyp ` K ) |
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| cdleme12.u | |- U = ( ( P .\/ Q ) ./\ W ) |
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| cdleme12.f | |- F = ( ( S .\/ U ) ./\ ( Q .\/ ( ( P .\/ S ) ./\ W ) ) ) |
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| cdleme12.g | |- G = ( ( T .\/ U ) ./\ ( Q .\/ ( ( P .\/ T ) ./\ W ) ) ) |
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| Assertion | cdleme14 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( ( S .\/ T ) ./\ ( F .\/ G ) ) .<_ ( ( ( T .\/ P ) ./\ ( G .\/ Q ) ) .\/ ( ( P .\/ S ) ./\ ( Q .\/ F ) ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cdleme12.l | |- .<_ = ( le ` K ) |
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| 2 | cdleme12.j | |- .\/ = ( join ` K ) |
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| 3 | cdleme12.m | |- ./\ = ( meet ` K ) |
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| 4 | cdleme12.a | |- A = ( Atoms ` K ) |
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| 5 | cdleme12.h | |- H = ( LHyp ` K ) |
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| 6 | cdleme12.u | |- U = ( ( P .\/ Q ) ./\ W ) |
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| 7 | cdleme12.f | |- F = ( ( S .\/ U ) ./\ ( Q .\/ ( ( P .\/ S ) ./\ W ) ) ) |
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| 8 | cdleme12.g | |- G = ( ( T .\/ U ) ./\ ( Q .\/ ( ( P .\/ T ) ./\ W ) ) ) |
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| 9 | simp11 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( K e. HL /\ W e. H ) ) |
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| 10 | simp12 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( P e. A /\ -. P .<_ W ) ) |
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| 11 | simp13l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> Q e. A ) |
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| 12 | simp23l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> P =/= Q ) |
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| 13 | simp21 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( S e. A /\ -. S .<_ W ) ) |
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| 14 | simp22 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( T e. A /\ -. T .<_ W ) ) |
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| 15 | simp23r | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> S =/= T ) |
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| 16 | simp33 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> -. U .<_ ( S .\/ T ) ) |
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| 17 | 15 16 | jca | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( S =/= T /\ -. U .<_ ( S .\/ T ) ) ) |
| 18 | 1 2 3 4 5 6 7 8 | cdleme13 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ Q e. A /\ P =/= Q ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( S =/= T /\ -. U .<_ ( S .\/ T ) ) ) ) -> ( ( S .\/ F ) ./\ ( T .\/ G ) ) .<_ ( P .\/ Q ) ) |
| 19 | 9 10 11 12 13 14 17 18 | syl133anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( ( S .\/ F ) ./\ ( T .\/ G ) ) .<_ ( P .\/ Q ) ) |
| 20 | simp11l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> K e. HL ) |
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| 21 | simp21l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> S e. A ) |
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| 22 | simp22l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> T e. A ) |
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| 23 | simp12l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> P e. A ) |
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| 24 | simp13 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( Q e. A /\ -. Q .<_ W ) ) |
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| 25 | simp31 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> -. S .<_ ( P .\/ Q ) ) |
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| 26 | 1 2 3 4 5 6 7 | cdleme3fa | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ ( S e. A /\ -. S .<_ W ) ) /\ ( P =/= Q /\ -. S .<_ ( P .\/ Q ) ) ) -> F e. A ) |
| 27 | 9 10 24 13 12 25 26 | syl132anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> F e. A ) |
| 28 | simp32 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> -. T .<_ ( P .\/ Q ) ) |
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| 29 | 1 2 3 4 5 6 8 | cdleme3fa | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) /\ ( T e. A /\ -. T .<_ W ) ) /\ ( P =/= Q /\ -. T .<_ ( P .\/ Q ) ) ) -> G e. A ) |
| 30 | 9 10 24 14 12 28 29 | syl132anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> G e. A ) |
| 31 | 1 2 3 4 | dalaw | |- ( ( K e. HL /\ ( S e. A /\ T e. A /\ P e. A ) /\ ( F e. A /\ G e. A /\ Q e. A ) ) -> ( ( ( S .\/ F ) ./\ ( T .\/ G ) ) .<_ ( P .\/ Q ) -> ( ( S .\/ T ) ./\ ( F .\/ G ) ) .<_ ( ( ( T .\/ P ) ./\ ( G .\/ Q ) ) .\/ ( ( P .\/ S ) ./\ ( Q .\/ F ) ) ) ) ) |
| 32 | 20 21 22 23 27 30 11 31 | syl133anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( ( ( S .\/ F ) ./\ ( T .\/ G ) ) .<_ ( P .\/ Q ) -> ( ( S .\/ T ) ./\ ( F .\/ G ) ) .<_ ( ( ( T .\/ P ) ./\ ( G .\/ Q ) ) .\/ ( ( P .\/ S ) ./\ ( Q .\/ F ) ) ) ) ) |
| 33 | 19 32 | mpd | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( ( S e. A /\ -. S .<_ W ) /\ ( T e. A /\ -. T .<_ W ) /\ ( P =/= Q /\ S =/= T ) ) /\ ( -. S .<_ ( P .\/ Q ) /\ -. T .<_ ( P .\/ Q ) /\ -. U .<_ ( S .\/ T ) ) ) -> ( ( S .\/ T ) ./\ ( F .\/ G ) ) .<_ ( ( ( T .\/ P ) ./\ ( G .\/ Q ) ) .\/ ( ( P .\/ S ) ./\ ( Q .\/ F ) ) ) ) |