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Theorem cdleme19a 36112
 Description: Part of proof of Lemma E in [Crawley] p. 113, 5th paragraph on p. 114, 1st line. 𝐷 represents s2. In their notation, we prove that if r ≤ s ∨ t, then s2=(s ∨ t) ∧ w. (Contributed by NM, 13-Nov-2012.)
Hypotheses
Ref Expression
cdleme19.l = (le‘𝐾)
cdleme19.j = (join‘𝐾)
cdleme19.m = (meet‘𝐾)
cdleme19.a 𝐴 = (Atoms‘𝐾)
cdleme19.h 𝐻 = (LHyp‘𝐾)
cdleme19.u 𝑈 = ((𝑃 𝑄) 𝑊)
cdleme19.f 𝐹 = ((𝑆 𝑈) (𝑄 ((𝑃 𝑆) 𝑊)))
cdleme19.g 𝐺 = ((𝑇 𝑈) (𝑄 ((𝑃 𝑇) 𝑊)))
cdleme19.d 𝐷 = ((𝑅 𝑆) 𝑊)
cdleme19.y 𝑌 = ((𝑅 𝑇) 𝑊)
Assertion
Ref Expression
cdleme19a ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝐷 = ((𝑆 𝑇) 𝑊))

Proof of Theorem cdleme19a
StepHypRef Expression
1 cdleme19.d . 2 𝐷 = ((𝑅 𝑆) 𝑊)
2 eqid 2771 . . . 4 (Base‘𝐾) = (Base‘𝐾)
3 cdleme19.l . . . 4 = (le‘𝐾)
4 hllat 35172 . . . . 5 (𝐾 ∈ HL → 𝐾 ∈ Lat)
543ad2ant1 1127 . . . 4 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝐾 ∈ Lat)
6 simp1 1130 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝐾 ∈ HL)
7 simp21 1248 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑅𝐴)
8 simp22 1249 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑆𝐴)
9 cdleme19.j . . . . . 6 = (join‘𝐾)
10 cdleme19.a . . . . . 6 𝐴 = (Atoms‘𝐾)
112, 9, 10hlatjcl 35175 . . . . 5 ((𝐾 ∈ HL ∧ 𝑅𝐴𝑆𝐴) → (𝑅 𝑆) ∈ (Base‘𝐾))
126, 7, 8, 11syl3anc 1476 . . . 4 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → (𝑅 𝑆) ∈ (Base‘𝐾))
13 simp23 1250 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑇𝐴)
142, 9, 10hlatjcl 35175 . . . . 5 ((𝐾 ∈ HL ∧ 𝑆𝐴𝑇𝐴) → (𝑆 𝑇) ∈ (Base‘𝐾))
156, 8, 13, 14syl3anc 1476 . . . 4 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → (𝑆 𝑇) ∈ (Base‘𝐾))
16 simp33 1253 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑅 (𝑆 𝑇))
173, 9, 10hlatlej1 35183 . . . . . 6 ((𝐾 ∈ HL ∧ 𝑆𝐴𝑇𝐴) → 𝑆 (𝑆 𝑇))
186, 8, 13, 17syl3anc 1476 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑆 (𝑆 𝑇))
192, 10atbase 35098 . . . . . . 7 (𝑅𝐴𝑅 ∈ (Base‘𝐾))
207, 19syl 17 . . . . . 6 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑅 ∈ (Base‘𝐾))
212, 10atbase 35098 . . . . . . 7 (𝑆𝐴𝑆 ∈ (Base‘𝐾))
228, 21syl 17 . . . . . 6 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑆 ∈ (Base‘𝐾))
232, 3, 9latjle12 17270 . . . . . 6 ((𝐾 ∈ Lat ∧ (𝑅 ∈ (Base‘𝐾) ∧ 𝑆 ∈ (Base‘𝐾) ∧ (𝑆 𝑇) ∈ (Base‘𝐾))) → ((𝑅 (𝑆 𝑇) ∧ 𝑆 (𝑆 𝑇)) ↔ (𝑅 𝑆) (𝑆 𝑇)))
245, 20, 22, 15, 23syl13anc 1478 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → ((𝑅 (𝑆 𝑇) ∧ 𝑆 (𝑆 𝑇)) ↔ (𝑅 𝑆) (𝑆 𝑇)))
2516, 18, 24mpbi2and 691 . . . 4 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → (𝑅 𝑆) (𝑆 𝑇))
263, 9, 10hlatlej2 35184 . . . . . 6 ((𝐾 ∈ HL ∧ 𝑅𝐴𝑆𝐴) → 𝑆 (𝑅 𝑆))
276, 7, 8, 26syl3anc 1476 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑆 (𝑅 𝑆))
28 hlcvl 35168 . . . . . . . . 9 (𝐾 ∈ HL → 𝐾 ∈ CvLat)
29283ad2ant1 1127 . . . . . . . 8 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝐾 ∈ CvLat)
30 simp31 1251 . . . . . . . . 9 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑅 (𝑃 𝑄))
31 simp32 1252 . . . . . . . . 9 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → ¬ 𝑆 (𝑃 𝑄))
32 nbrne2 4806 . . . . . . . . 9 ((𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄)) → 𝑅𝑆)
3330, 31, 32syl2anc 573 . . . . . . . 8 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑅𝑆)
343, 9, 10cvlatexch1 35145 . . . . . . . 8 ((𝐾 ∈ CvLat ∧ (𝑅𝐴𝑇𝐴𝑆𝐴) ∧ 𝑅𝑆) → (𝑅 (𝑆 𝑇) → 𝑇 (𝑆 𝑅)))
3529, 7, 13, 8, 33, 34syl131anc 1489 . . . . . . 7 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → (𝑅 (𝑆 𝑇) → 𝑇 (𝑆 𝑅)))
3616, 35mpd 15 . . . . . 6 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑇 (𝑆 𝑅))
379, 10hlatjcom 35176 . . . . . . 7 ((𝐾 ∈ HL ∧ 𝑅𝐴𝑆𝐴) → (𝑅 𝑆) = (𝑆 𝑅))
386, 7, 8, 37syl3anc 1476 . . . . . 6 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → (𝑅 𝑆) = (𝑆 𝑅))
3936, 38breqtrrd 4814 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑇 (𝑅 𝑆))
402, 10atbase 35098 . . . . . . 7 (𝑇𝐴𝑇 ∈ (Base‘𝐾))
4113, 40syl 17 . . . . . 6 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝑇 ∈ (Base‘𝐾))
422, 3, 9latjle12 17270 . . . . . 6 ((𝐾 ∈ Lat ∧ (𝑆 ∈ (Base‘𝐾) ∧ 𝑇 ∈ (Base‘𝐾) ∧ (𝑅 𝑆) ∈ (Base‘𝐾))) → ((𝑆 (𝑅 𝑆) ∧ 𝑇 (𝑅 𝑆)) ↔ (𝑆 𝑇) (𝑅 𝑆)))
435, 22, 41, 12, 42syl13anc 1478 . . . . 5 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → ((𝑆 (𝑅 𝑆) ∧ 𝑇 (𝑅 𝑆)) ↔ (𝑆 𝑇) (𝑅 𝑆)))
4427, 39, 43mpbi2and 691 . . . 4 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → (𝑆 𝑇) (𝑅 𝑆))
452, 3, 5, 12, 15, 25, 44latasymd 17265 . . 3 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → (𝑅 𝑆) = (𝑆 𝑇))
4645oveq1d 6808 . 2 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → ((𝑅 𝑆) 𝑊) = ((𝑆 𝑇) 𝑊))
471, 46syl5eq 2817 1 ((𝐾 ∈ HL ∧ (𝑅𝐴𝑆𝐴𝑇𝐴) ∧ (𝑅 (𝑃 𝑄) ∧ ¬ 𝑆 (𝑃 𝑄) ∧ 𝑅 (𝑆 𝑇))) → 𝐷 = ((𝑆 𝑇) 𝑊))
 Colors of variables: wff setvar class Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∧ wa 382   ∧ w3a 1071   = wceq 1631   ∈ wcel 2145   ≠ wne 2943   class class class wbr 4786  ‘cfv 6031  (class class class)co 6793  Basecbs 16064  lecple 16156  joincjn 17152  meetcmee 17153  Latclat 17253  Atomscatm 35072  CvLatclc 35074  HLchlt 35159  LHypclh 35792 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1870  ax-4 1885  ax-5 1991  ax-6 2057  ax-7 2093  ax-8 2147  ax-9 2154  ax-10 2174  ax-11 2190  ax-12 2203  ax-13 2408  ax-ext 2751  ax-rep 4904  ax-sep 4915  ax-nul 4923  ax-pow 4974  ax-pr 5034  ax-un 7096 This theorem depends on definitions:  df-bi 197  df-an 383  df-or 837  df-3an 1073  df-tru 1634  df-ex 1853  df-nf 1858  df-sb 2050  df-eu 2622  df-mo 2623  df-clab 2758  df-cleq 2764  df-clel 2767  df-nfc 2902  df-ne 2944  df-ral 3066  df-rex 3067  df-reu 3068  df-rab 3070  df-v 3353  df-sbc 3588  df-csb 3683  df-dif 3726  df-un 3728  df-in 3730  df-ss 3737  df-nul 4064  df-if 4226  df-pw 4299  df-sn 4317  df-pr 4319  df-op 4323  df-uni 4575  df-iun 4656  df-br 4787  df-opab 4847  df-mpt 4864  df-id 5157  df-xp 5255  df-rel 5256  df-cnv 5257  df-co 5258  df-dm 5259  df-rn 5260  df-res 5261  df-ima 5262  df-iota 5994  df-fun 6033  df-fn 6034  df-f 6035  df-f1 6036  df-fo 6037  df-f1o 6038  df-fv 6039  df-riota 6754  df-ov 6796  df-oprab 6797  df-preset 17136  df-poset 17154  df-plt 17166  df-lub 17182  df-glb 17183  df-join 17184  df-meet 17185  df-p0 17247  df-lat 17254  df-covers 35075  df-ats 35076  df-atl 35107  df-cvlat 35131  df-hlat 35160 This theorem is referenced by:  cdleme19b  36113
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