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Description: TODO: FIX COMMENT. (Contributed by NM, 5-Apr-2013)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | cdlemef46.b | |- B = ( Base ` K ) |
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| cdlemef46.l | |- .<_ = ( le ` K ) |
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| cdlemef46.j | |- .\/ = ( join ` K ) |
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| cdlemef46.m | |- ./\ = ( meet ` K ) |
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| cdlemef46.a | |- A = ( Atoms ` K ) |
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| cdlemef46.h | |- H = ( LHyp ` K ) |
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| cdlemef46.u | |- U = ( ( P .\/ Q ) ./\ W ) |
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| cdlemef46.d | |- D = ( ( t .\/ U ) ./\ ( Q .\/ ( ( P .\/ t ) ./\ W ) ) ) |
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| cdlemefs46.e | |- E = ( ( P .\/ Q ) ./\ ( D .\/ ( ( s .\/ t ) ./\ W ) ) ) |
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| cdlemef46.f | |- F = ( x e. B |-> if ( ( P =/= Q /\ -. x .<_ W ) , ( iota_ z e. B A. s e. A ( ( -. s .<_ W /\ ( s .\/ ( x ./\ W ) ) = x ) -> z = ( if ( s .<_ ( P .\/ Q ) , ( iota_ y e. B A. t e. A ( ( -. t .<_ W /\ -. t .<_ ( P .\/ Q ) ) -> y = E ) ) , [_ s / t ]_ D ) .\/ ( x ./\ W ) ) ) ) , x ) ) |
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| Assertion | cdleme17d3 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> ( F ` P ) = Q ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cdlemef46.b | |- B = ( Base ` K ) |
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| 2 | cdlemef46.l | |- .<_ = ( le ` K ) |
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| 3 | cdlemef46.j | |- .\/ = ( join ` K ) |
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| 4 | cdlemef46.m | |- ./\ = ( meet ` K ) |
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| 5 | cdlemef46.a | |- A = ( Atoms ` K ) |
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| 6 | cdlemef46.h | |- H = ( LHyp ` K ) |
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| 7 | cdlemef46.u | |- U = ( ( P .\/ Q ) ./\ W ) |
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| 8 | cdlemef46.d | |- D = ( ( t .\/ U ) ./\ ( Q .\/ ( ( P .\/ t ) ./\ W ) ) ) |
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| 9 | cdlemefs46.e | |- E = ( ( P .\/ Q ) ./\ ( D .\/ ( ( s .\/ t ) ./\ W ) ) ) |
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| 10 | cdlemef46.f | |- F = ( x e. B |-> if ( ( P =/= Q /\ -. x .<_ W ) , ( iota_ z e. B A. s e. A ( ( -. s .<_ W /\ ( s .\/ ( x ./\ W ) ) = x ) -> z = ( if ( s .<_ ( P .\/ Q ) , ( iota_ y e. B A. t e. A ( ( -. t .<_ W /\ -. t .<_ ( P .\/ Q ) ) -> y = E ) ) , [_ s / t ]_ D ) .\/ ( x ./\ W ) ) ) ) , x ) ) |
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| 11 | simpl1 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> ( K e. HL /\ W e. H ) ) |
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| 12 | simpl2 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> ( P e. A /\ -. P .<_ W ) ) |
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| 13 | simpl3 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> ( Q e. A /\ -. Q .<_ W ) ) |
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| 14 | simpr | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> P =/= Q ) |
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| 15 | 2 3 5 6 | cdlemb2 | |- ( ( ( K e. HL /\ W e. H ) /\ ( ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> E. e e. A ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) |
| 16 | 11 12 13 14 15 | syl121anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> E. e e. A ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) |
| 17 | simp1 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q /\ ( e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) ) |
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| 18 | simp2 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q /\ ( e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> P =/= Q ) |
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| 19 | simp3l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q /\ ( e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> e e. A ) |
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| 20 | simp3rl | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q /\ ( e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> -. e .<_ W ) |
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| 21 | 19 20 | jca | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q /\ ( e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> ( e e. A /\ -. e .<_ W ) ) |
| 22 | simp3rr | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q /\ ( e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> -. e .<_ ( P .\/ Q ) ) |
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| 23 | 1 2 3 4 5 6 7 8 9 10 | cdleme17d2 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( e e. A /\ -. e .<_ W ) ) /\ -. e .<_ ( P .\/ Q ) ) -> ( F ` P ) = Q ) |
| 24 | 17 18 21 22 23 | syl121anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q /\ ( e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> ( F ` P ) = Q ) |
| 25 | 24 | 3expia | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> ( ( e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) -> ( F ` P ) = Q ) ) |
| 26 | 25 | expd | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> ( e e. A -> ( ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) -> ( F ` P ) = Q ) ) ) |
| 27 | 26 | rexlimdv | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> ( E. e e. A ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) -> ( F ` P ) = Q ) ) |
| 28 | 16 27 | mpd | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ P =/= Q ) -> ( F ` P ) = Q ) |