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Description: TODO FIX COMMENT p. 116 penultimate line: g(f(r)) = r. (Contributed by NM, 4-Apr-2013)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | cdlemef46g.b | |- B = ( Base ` K ) |
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| cdlemef46g.l | |- .<_ = ( le ` K ) |
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| cdlemef46g.j | |- .\/ = ( join ` K ) |
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| cdlemef46g.m | |- ./\ = ( meet ` K ) |
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| cdlemef46g.a | |- A = ( Atoms ` K ) |
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| cdlemef46g.h | |- H = ( LHyp ` K ) |
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| cdlemef46g.u | |- U = ( ( P .\/ Q ) ./\ W ) |
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| cdlemef46g.d | |- D = ( ( t .\/ U ) ./\ ( Q .\/ ( ( P .\/ t ) ./\ W ) ) ) |
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| cdlemefs46g.e | |- E = ( ( P .\/ Q ) ./\ ( D .\/ ( ( s .\/ t ) ./\ W ) ) ) |
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| cdlemef46g.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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| cdlemef46.v | |- V = ( ( Q .\/ P ) ./\ W ) |
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| cdlemef46.n | |- N = ( ( v .\/ V ) ./\ ( P .\/ ( ( Q .\/ v ) ./\ W ) ) ) |
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| cdlemefs46.o | |- O = ( ( Q .\/ P ) ./\ ( N .\/ ( ( u .\/ v ) ./\ W ) ) ) |
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| cdlemef46.g | |- G = ( a e. B |-> if ( ( Q =/= P /\ -. a .<_ W ) , ( iota_ c e. B A. u e. A ( ( -. u .<_ W /\ ( u .\/ ( a ./\ W ) ) = a ) -> c = ( if ( u .<_ ( Q .\/ P ) , ( iota_ b e. B A. v e. A ( ( -. v .<_ W /\ -. v .<_ ( Q .\/ P ) ) -> b = O ) ) , [_ u / v ]_ N ) .\/ ( a ./\ W ) ) ) ) , a ) ) |
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| Assertion | cdlemeg46gfre | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> ( G ` ( F ` R ) ) = R ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cdlemef46g.b | |- B = ( Base ` K ) |
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| 2 | cdlemef46g.l | |- .<_ = ( le ` K ) |
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| 3 | cdlemef46g.j | |- .\/ = ( join ` K ) |
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| 4 | cdlemef46g.m | |- ./\ = ( meet ` K ) |
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| 5 | cdlemef46g.a | |- A = ( Atoms ` K ) |
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| 6 | cdlemef46g.h | |- H = ( LHyp ` K ) |
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| 7 | cdlemef46g.u | |- U = ( ( P .\/ Q ) ./\ W ) |
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| 8 | cdlemef46g.d | |- D = ( ( t .\/ U ) ./\ ( Q .\/ ( ( P .\/ t ) ./\ W ) ) ) |
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| 9 | cdlemefs46g.e | |- E = ( ( P .\/ Q ) ./\ ( D .\/ ( ( s .\/ t ) ./\ W ) ) ) |
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| 10 | cdlemef46g.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 | cdlemef46.v | |- V = ( ( Q .\/ P ) ./\ W ) |
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| 12 | cdlemef46.n | |- N = ( ( v .\/ V ) ./\ ( P .\/ ( ( Q .\/ v ) ./\ W ) ) ) |
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| 13 | cdlemefs46.o | |- O = ( ( Q .\/ P ) ./\ ( N .\/ ( ( u .\/ v ) ./\ W ) ) ) |
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| 14 | cdlemef46.g | |- G = ( a e. B |-> if ( ( Q =/= P /\ -. a .<_ W ) , ( iota_ c e. B A. u e. A ( ( -. u .<_ W /\ ( u .\/ ( a ./\ W ) ) = a ) -> c = ( if ( u .<_ ( Q .\/ P ) , ( iota_ b e. B A. v e. A ( ( -. v .<_ W /\ -. v .<_ ( Q .\/ P ) ) -> b = O ) ) , [_ u / v ]_ N ) .\/ ( a ./\ W ) ) ) ) , a ) ) |
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| 15 | simp11 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> ( K e. HL /\ W e. H ) ) |
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| 16 | simp12 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> ( P e. A /\ -. P .<_ W ) ) |
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| 17 | simp13 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> ( Q e. A /\ -. Q .<_ W ) ) |
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| 18 | simp2l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> P =/= Q ) |
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| 19 | 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 ) ) ) |
| 20 | 15 16 17 18 19 | syl121anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> E. e e. A ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) |
| 21 | simp1 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( 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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| 22 | simp2l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> P =/= Q ) |
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| 23 | simp2r | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> ( R e. A /\ -. R .<_ W ) ) |
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| 24 | simp32 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> e e. A ) |
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| 25 | simp33l | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> -. e .<_ W ) |
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| 26 | 24 25 | jca | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> ( e e. A /\ -. e .<_ W ) ) |
| 27 | simp31 | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> R .<_ ( P .\/ Q ) ) |
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| 28 | simp33r | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> -. e .<_ ( P .\/ Q ) ) |
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| 29 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 | cdlemeg46gfr | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) /\ ( e e. A /\ -. e .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ -. e .<_ ( P .\/ Q ) ) ) -> ( G ` ( F ` R ) ) = R ) |
| 30 | 21 22 23 26 27 28 29 | syl132anc | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) ) -> ( G ` ( F ` R ) ) = R ) |
| 31 | 30 | 3expia | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) ) -> ( ( R .<_ ( P .\/ Q ) /\ e e. A /\ ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) ) -> ( G ` ( F ` R ) ) = R ) ) |
| 32 | 31 | 3expd | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) ) -> ( R .<_ ( P .\/ Q ) -> ( e e. A -> ( ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) -> ( G ` ( F ` R ) ) = R ) ) ) ) |
| 33 | 32 | 3impia | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> ( e e. A -> ( ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) -> ( G ` ( F ` R ) ) = R ) ) ) |
| 34 | 33 | rexlimdv | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> ( E. e e. A ( -. e .<_ W /\ -. e .<_ ( P .\/ Q ) ) -> ( G ` ( F ` R ) ) = R ) ) |
| 35 | 20 34 | mpd | |- ( ( ( ( K e. HL /\ W e. H ) /\ ( P e. A /\ -. P .<_ W ) /\ ( Q e. A /\ -. Q .<_ W ) ) /\ ( P =/= Q /\ ( R e. A /\ -. R .<_ W ) ) /\ R .<_ ( P .\/ Q ) ) -> ( G ` ( F ` R ) ) = R ) |