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Description: Lemma for 4at . Combine both possible cases. (Contributed by NM, 9-Jul-2012)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | 4at.l | |- .<_ = ( le ` K ) |
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| 4at.j | |- .\/ = ( join ` K ) |
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| 4at.a | |- A = ( Atoms ` K ) |
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| Assertion | 4atlem10 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( ( R .\/ S ) .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) -> ( ( P .\/ Q ) .\/ ( R .\/ S ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 4at.l | |- .<_ = ( le ` K ) |
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| 2 | 4at.j | |- .\/ = ( join ` K ) |
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| 3 | 4at.a | |- A = ( Atoms ` K ) |
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| 4 | simp11 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> K e. HL ) |
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| 5 | 4 | hllatd | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> K e. Lat ) |
| 6 | simp21l | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> R e. A ) |
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| 7 | eqid | |- ( Base ` K ) = ( Base ` K ) |
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| 8 | 7 3 | atbase | |- ( R e. A -> R e. ( Base ` K ) ) |
| 9 | 6 8 | syl | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> R e. ( Base ` K ) ) |
| 10 | simp21r | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> S e. A ) |
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| 11 | 7 3 | atbase | |- ( S e. A -> S e. ( Base ` K ) ) |
| 12 | 10 11 | syl | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> S e. ( Base ` K ) ) |
| 13 | 7 2 3 | hlatjcl | |- ( ( K e. HL /\ P e. A /\ Q e. A ) -> ( P .\/ Q ) e. ( Base ` K ) ) |
| 14 | 13 | 3ad2ant1 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( P .\/ Q ) e. ( Base ` K ) ) |
| 15 | simp22 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> V e. A ) |
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| 16 | simp23 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> W e. A ) |
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| 17 | 7 2 3 | hlatjcl | |- ( ( K e. HL /\ V e. A /\ W e. A ) -> ( V .\/ W ) e. ( Base ` K ) ) |
| 18 | 4 15 16 17 | syl3anc | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( V .\/ W ) e. ( Base ` K ) ) |
| 19 | 7 2 | latjcl | |- ( ( K e. Lat /\ ( P .\/ Q ) e. ( Base ` K ) /\ ( V .\/ W ) e. ( Base ` K ) ) -> ( ( P .\/ Q ) .\/ ( V .\/ W ) ) e. ( Base ` K ) ) |
| 20 | 5 14 18 19 | syl3anc | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( ( P .\/ Q ) .\/ ( V .\/ W ) ) e. ( Base ` K ) ) |
| 21 | 7 1 2 | latjle12 | |- ( ( K e. Lat /\ ( R e. ( Base ` K ) /\ S e. ( Base ` K ) /\ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) e. ( Base ` K ) ) ) -> ( ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) <-> ( R .\/ S ) .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) |
| 22 | 5 9 12 20 21 | syl13anc | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) <-> ( R .\/ S ) .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) |
| 23 | simp11 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( K e. HL /\ P e. A /\ Q e. A ) ) |
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| 24 | 6 10 15 | 3jca | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( R e. A /\ S e. A /\ V e. A ) ) |
| 25 | 24 | 3ad2ant1 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( R e. A /\ S e. A /\ V e. A ) ) |
| 26 | 16 | 3ad2ant1 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> W e. A ) |
| 27 | simp2 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> -. R .<_ ( ( P .\/ Q ) .\/ W ) ) |
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| 28 | simp33 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> -. S .<_ ( ( P .\/ Q ) .\/ R ) ) |
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| 29 | 28 | 3ad2ant1 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> -. S .<_ ( ( P .\/ Q ) .\/ R ) ) |
| 30 | 26 27 29 | 3jca | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( W e. A /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) |
| 31 | simp3 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) |
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| 32 | 1 2 3 | 4atlem10b | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( R e. A /\ S e. A /\ V e. A ) /\ ( W e. A /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( ( P .\/ Q ) .\/ ( R .\/ S ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) |
| 33 | 23 25 30 31 32 | syl31anc | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. R .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( ( P .\/ Q ) .\/ ( R .\/ S ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) |
| 34 | 33 | 3exp | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( -. R .<_ ( ( P .\/ Q ) .\/ W ) -> ( ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) -> ( ( P .\/ Q ) .\/ ( R .\/ S ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) ) |
| 35 | 2 3 | hlatjcom | |- ( ( K e. HL /\ S e. A /\ R e. A ) -> ( S .\/ R ) = ( R .\/ S ) ) |
| 36 | 4 10 6 35 | syl3anc | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( S .\/ R ) = ( R .\/ S ) ) |
| 37 | 36 | oveq2d | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( ( P .\/ Q ) .\/ ( S .\/ R ) ) = ( ( P .\/ Q ) .\/ ( R .\/ S ) ) ) |
| 38 | 37 | 3ad2ant1 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( ( P .\/ Q ) .\/ ( S .\/ R ) ) = ( ( P .\/ Q ) .\/ ( R .\/ S ) ) ) |
| 39 | simp11 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( K e. HL /\ P e. A /\ Q e. A ) ) |
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| 40 | 10 6 15 | 3jca | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( S e. A /\ R e. A /\ V e. A ) ) |
| 41 | 40 | 3ad2ant1 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( S e. A /\ R e. A /\ V e. A ) ) |
| 42 | 16 | 3ad2ant1 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> W e. A ) |
| 43 | simp2 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> -. S .<_ ( ( P .\/ Q ) .\/ W ) ) |
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| 44 | simp12 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> P e. A ) |
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| 45 | simp13 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> Q e. A ) |
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| 46 | 44 45 | jca | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( P e. A /\ Q e. A ) ) |
| 47 | simp21 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( R e. A /\ S e. A ) ) |
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| 48 | simp32 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> -. R .<_ ( P .\/ Q ) ) |
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| 49 | 1 2 3 | 4atlem0a | |- ( ( ( K e. HL /\ ( P e. A /\ Q e. A ) /\ ( R e. A /\ S e. A ) ) /\ ( -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> -. R .<_ ( ( P .\/ Q ) .\/ S ) ) |
| 50 | 4 46 47 48 28 49 | syl32anc | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> -. R .<_ ( ( P .\/ Q ) .\/ S ) ) |
| 51 | 50 | 3ad2ant1 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> -. R .<_ ( ( P .\/ Q ) .\/ S ) ) |
| 52 | 42 43 51 | 3jca | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( W e. A /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ -. R .<_ ( ( P .\/ Q ) .\/ S ) ) ) |
| 53 | simprr | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) |
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| 54 | simprl | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) |
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| 55 | 53 54 | jca | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) |
| 56 | 55 | 3adant2 | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) |
| 57 | 1 2 3 | 4atlem10b | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ R e. A /\ V e. A ) /\ ( W e. A /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ -. R .<_ ( ( P .\/ Q ) .\/ S ) ) ) /\ ( S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( ( P .\/ Q ) .\/ ( S .\/ R ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) |
| 58 | 39 41 52 56 57 | syl31anc | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( ( P .\/ Q ) .\/ ( S .\/ R ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) |
| 59 | 38 58 | eqtr3d | |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) /\ -. S .<_ ( ( P .\/ Q ) .\/ W ) /\ ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) -> ( ( P .\/ Q ) .\/ ( R .\/ S ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) |
| 60 | 59 | 3exp | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( -. S .<_ ( ( P .\/ Q ) .\/ W ) -> ( ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) -> ( ( P .\/ Q ) .\/ ( R .\/ S ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) ) |
| 61 | simp1 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( K e. HL /\ P e. A /\ Q e. A ) ) |
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| 62 | simp3 | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) |
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| 63 | 1 2 3 | 4atlem3b | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( R e. A /\ S e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( -. R .<_ ( ( P .\/ Q ) .\/ W ) \/ -. S .<_ ( ( P .\/ Q ) .\/ W ) ) ) |
| 64 | 61 6 10 16 62 63 | syl131anc | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( -. R .<_ ( ( P .\/ Q ) .\/ W ) \/ -. S .<_ ( ( P .\/ Q ) .\/ W ) ) ) |
| 65 | 34 60 64 | mpjaod | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( ( R .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) /\ S .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) -> ( ( P .\/ Q ) .\/ ( R .\/ S ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) |
| 66 | 22 65 | sylbird | |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( ( R e. A /\ S e. A ) /\ V e. A /\ W e. A ) /\ ( P =/= Q /\ -. R .<_ ( P .\/ Q ) /\ -. S .<_ ( ( P .\/ Q ) .\/ R ) ) ) -> ( ( R .\/ S ) .<_ ( ( P .\/ Q ) .\/ ( V .\/ W ) ) -> ( ( P .\/ Q ) .\/ ( R .\/ S ) ) = ( ( P .\/ Q ) .\/ ( V .\/ W ) ) ) ) |