Theorem dalem3 40458

Description: Lemma for dalemdnee 40460. (Contributed by NM, 10-Aug-2012.)

Hypotheses

Ref	Expression
dalema.ph	⊢ (𝜑 ↔ (((𝐾 ∈ HL ∧ 𝐶 ∈ (Base‘𝐾)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴) ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑈 ∈ 𝐴)) ∧ (𝑌 ∈ 𝑂 ∧ 𝑍 ∈ 𝑂) ∧ ((¬ 𝐶 ≤ (𝑃 ∨ 𝑄) ∧ ¬ 𝐶 ≤ (𝑄 ∨ 𝑅) ∧ ¬ 𝐶 ≤ (𝑅 ∨ 𝑃)) ∧ (¬ 𝐶 ≤ (𝑆 ∨ 𝑇) ∧ ¬ 𝐶 ≤ (𝑇 ∨ 𝑈) ∧ ¬ 𝐶 ≤ (𝑈 ∨ 𝑆)) ∧ (𝐶 ≤ (𝑃 ∨ 𝑆) ∧ 𝐶 ≤ (𝑄 ∨ 𝑇) ∧ 𝐶 ≤ (𝑅 ∨ 𝑈)))))
dalemc.l	⊢ ≤ = (le‘𝐾)
dalemc.j	⊢ ∨ = (join‘𝐾)
dalemc.a	⊢ 𝐴 = (Atoms‘𝐾)
dalem3.m	⊢ ∧ = (meet‘𝐾)
dalem3.o	⊢ 𝑂 = (LPlanes‘𝐾)
dalem3.y	⊢ 𝑌 = ((𝑃 ∨ 𝑄) ∨ 𝑅)
dalem3.z	⊢ 𝑍 = ((𝑆 ∨ 𝑇) ∨ 𝑈)
dalem3.d	⊢ 𝐷 = ((𝑃 ∨ 𝑄) ∧ (𝑆 ∨ 𝑇))
dalem3.e	⊢ 𝐸 = ((𝑄 ∨ 𝑅) ∧ (𝑇 ∨ 𝑈))

Assertion

Ref	Expression
dalem3	⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → 𝐷 ≠ 𝐸)

Proof of Theorem dalem3

Step	Hyp	Ref	Expression
1		dalema.ph	. . . . 5 ⊢ (𝜑 ↔ (((𝐾 ∈ HL ∧ 𝐶 ∈ (Base‘𝐾)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴) ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑈 ∈ 𝐴)) ∧ (𝑌 ∈ 𝑂 ∧ 𝑍 ∈ 𝑂) ∧ ((¬ 𝐶 ≤ (𝑃 ∨ 𝑄) ∧ ¬ 𝐶 ≤ (𝑄 ∨ 𝑅) ∧ ¬ 𝐶 ≤ (𝑅 ∨ 𝑃)) ∧ (¬ 𝐶 ≤ (𝑆 ∨ 𝑇) ∧ ¬ 𝐶 ≤ (𝑇 ∨ 𝑈) ∧ ¬ 𝐶 ≤ (𝑈 ∨ 𝑆)) ∧ (𝐶 ≤ (𝑃 ∨ 𝑆) ∧ 𝐶 ≤ (𝑄 ∨ 𝑇) ∧ 𝐶 ≤ (𝑅 ∨ 𝑈)))))
2	1	dalemkehl 40417	. . . 4 ⊢ (𝜑 → 𝐾 ∈ HL)
3	1	dalempea 40420	. . . 4 ⊢ (𝜑 → 𝑃 ∈ 𝐴)
4	1	dalemqea 40421	. . . 4 ⊢ (𝜑 → 𝑄 ∈ 𝐴)
5	1	dalemrea 40422	. . . 4 ⊢ (𝜑 → 𝑅 ∈ 𝐴)
6	1	dalemyeo 40426	. . . 4 ⊢ (𝜑 → 𝑌 ∈ 𝑂)
7		dalemc.l	. . . . 5 ⊢ ≤ = (le‘𝐾)
8		dalemc.j	. . . . 5 ⊢ ∨ = (join‘𝐾)
9		dalemc.a	. . . . 5 ⊢ 𝐴 = (Atoms‘𝐾)
10		dalem3.o	. . . . 5 ⊢ 𝑂 = (LPlanes‘𝐾)
11		dalem3.y	. . . . 5 ⊢ 𝑌 = ((𝑃 ∨ 𝑄) ∨ 𝑅)
12	7, 8, 9, 10, 11	lplnric 40346	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴) ∧ 𝑌 ∈ 𝑂) → ¬ 𝑅 ≤ (𝑃 ∨ 𝑄))
13	2, 3, 4, 5, 6, 12	syl131anc 1410	. . 3 ⊢ (𝜑 → ¬ 𝑅 ≤ (𝑃 ∨ 𝑄))
14	13	adantr 485	. 2 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → ¬ 𝑅 ≤ (𝑃 ∨ 𝑄))
15		dalem3.e	. . . . . . 7 ⊢ 𝐸 = ((𝑄 ∨ 𝑅) ∧ (𝑇 ∨ 𝑈))
16	1	dalemkelat 40418	. . . . . . . 8 ⊢ (𝜑 → 𝐾 ∈ Lat)
17		eqid 2763	. . . . . . . . . 10 ⊢ (Base‘𝐾) = (Base‘𝐾)
18	17, 8, 9	hlatjcl 40161	. . . . . . . . 9 ⊢ ((𝐾 ∈ HL ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴) → (𝑄 ∨ 𝑅) ∈ (Base‘𝐾))
19	2, 4, 5, 18	syl3anc 1398	. . . . . . . 8 ⊢ (𝜑 → (𝑄 ∨ 𝑅) ∈ (Base‘𝐾))
20	1, 8, 9	dalemtjueb 40441	. . . . . . . 8 ⊢ (𝜑 → (𝑇 ∨ 𝑈) ∈ (Base‘𝐾))
21		dalem3.m	. . . . . . . . 9 ⊢ ∧ = (meet‘𝐾)
22	17, 7, 21	latmle1 18515	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ (𝑄 ∨ 𝑅) ∈ (Base‘𝐾) ∧ (𝑇 ∨ 𝑈) ∈ (Base‘𝐾)) → ((𝑄 ∨ 𝑅) ∧ (𝑇 ∨ 𝑈)) ≤ (𝑄 ∨ 𝑅))
23	16, 19, 20, 22	syl3anc 1398	. . . . . . 7 ⊢ (𝜑 → ((𝑄 ∨ 𝑅) ∧ (𝑇 ∨ 𝑈)) ≤ (𝑄 ∨ 𝑅))
24	15, 23	eqbrtrid 5146	. . . . . 6 ⊢ (𝜑 → 𝐸 ≤ (𝑄 ∨ 𝑅))
25		breq1 5112	. . . . . 6 ⊢ (𝐷 = 𝐸 → (𝐷 ≤ (𝑄 ∨ 𝑅) ↔ 𝐸 ≤ (𝑄 ∨ 𝑅)))
26	24, 25	syl5ibrcom 250	. . . . 5 ⊢ (𝜑 → (𝐷 = 𝐸 → 𝐷 ≤ (𝑄 ∨ 𝑅)))
27	26	adantr 485	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → (𝐷 = 𝐸 → 𝐷 ≤ (𝑄 ∨ 𝑅)))
28	2	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → 𝐾 ∈ HL)
29		dalem3.z	. . . . . . 7 ⊢ 𝑍 = ((𝑆 ∨ 𝑇) ∨ 𝑈)
30		dalem3.d	. . . . . . 7 ⊢ 𝐷 = ((𝑃 ∨ 𝑄) ∧ (𝑆 ∨ 𝑇))
31	1, 7, 8, 9, 21, 10, 11, 29, 30	dalemdea 40456	. . . . . 6 ⊢ (𝜑 → 𝐷 ∈ 𝐴)
32	31	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → 𝐷 ∈ 𝐴)
33	5	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → 𝑅 ∈ 𝐴)
34	4	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → 𝑄 ∈ 𝐴)
35		simpr 489	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → 𝐷 ≠ 𝑄)
36	7, 8, 9	hlatexch1 40189	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝐷 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) ∧ 𝐷 ≠ 𝑄) → (𝐷 ≤ (𝑄 ∨ 𝑅) → 𝑅 ≤ (𝑄 ∨ 𝐷)))
37	28, 32, 33, 34, 35, 36	syl131anc 1410	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → (𝐷 ≤ (𝑄 ∨ 𝑅) → 𝑅 ≤ (𝑄 ∨ 𝐷)))
38	7, 8, 9	hlatlej2 40170	. . . . . . . 8 ⊢ ((𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → 𝑄 ≤ (𝑃 ∨ 𝑄))
39	2, 3, 4, 38	syl3anc 1398	. . . . . . 7 ⊢ (𝜑 → 𝑄 ≤ (𝑃 ∨ 𝑄))
40	1, 8, 9	dalempjqeb 40439	. . . . . . . . 9 ⊢ (𝜑 → (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))
41	1, 8, 9	dalemsjteb 40440	. . . . . . . . 9 ⊢ (𝜑 → (𝑆 ∨ 𝑇) ∈ (Base‘𝐾))
42	17, 7, 21	latmle1 18515	. . . . . . . . 9 ⊢ ((𝐾 ∈ Lat ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾) ∧ (𝑆 ∨ 𝑇) ∈ (Base‘𝐾)) → ((𝑃 ∨ 𝑄) ∧ (𝑆 ∨ 𝑇)) ≤ (𝑃 ∨ 𝑄))
43	16, 40, 41, 42	syl3anc 1398	. . . . . . . 8 ⊢ (𝜑 → ((𝑃 ∨ 𝑄) ∧ (𝑆 ∨ 𝑇)) ≤ (𝑃 ∨ 𝑄))
44	30, 43	eqbrtrid 5146	. . . . . . 7 ⊢ (𝜑 → 𝐷 ≤ (𝑃 ∨ 𝑄))
45	1, 9	dalemqeb 40434	. . . . . . . 8 ⊢ (𝜑 → 𝑄 ∈ (Base‘𝐾))
46	17, 9	atbase 40083	. . . . . . . . 9 ⊢ (𝐷 ∈ 𝐴 → 𝐷 ∈ (Base‘𝐾))
47	31, 46	syl 18	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ∈ (Base‘𝐾))
48	17, 7, 8	latjle12 18501	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ (𝑄 ∈ (Base‘𝐾) ∧ 𝐷 ∈ (Base‘𝐾) ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))) → ((𝑄 ≤ (𝑃 ∨ 𝑄) ∧ 𝐷 ≤ (𝑃 ∨ 𝑄)) ↔ (𝑄 ∨ 𝐷) ≤ (𝑃 ∨ 𝑄)))
49	16, 45, 47, 40, 48	syl13anc 1399	. . . . . . 7 ⊢ (𝜑 → ((𝑄 ≤ (𝑃 ∨ 𝑄) ∧ 𝐷 ≤ (𝑃 ∨ 𝑄)) ↔ (𝑄 ∨ 𝐷) ≤ (𝑃 ∨ 𝑄)))
50	39, 44, 49	mpbi2and 724	. . . . . 6 ⊢ (𝜑 → (𝑄 ∨ 𝐷) ≤ (𝑃 ∨ 𝑄))
51	1, 9	dalemreb 40435	. . . . . . 7 ⊢ (𝜑 → 𝑅 ∈ (Base‘𝐾))
52	17, 8, 9	hlatjcl 40161	. . . . . . . 8 ⊢ ((𝐾 ∈ HL ∧ 𝑄 ∈ 𝐴 ∧ 𝐷 ∈ 𝐴) → (𝑄 ∨ 𝐷) ∈ (Base‘𝐾))
53	2, 4, 31, 52	syl3anc 1398	. . . . . . 7 ⊢ (𝜑 → (𝑄 ∨ 𝐷) ∈ (Base‘𝐾))
54	17, 7	lattr 18495	. . . . . . 7 ⊢ ((𝐾 ∈ Lat ∧ (𝑅 ∈ (Base‘𝐾) ∧ (𝑄 ∨ 𝐷) ∈ (Base‘𝐾) ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))) → ((𝑅 ≤ (𝑄 ∨ 𝐷) ∧ (𝑄 ∨ 𝐷) ≤ (𝑃 ∨ 𝑄)) → 𝑅 ≤ (𝑃 ∨ 𝑄)))
55	16, 51, 53, 40, 54	syl13anc 1399	. . . . . 6 ⊢ (𝜑 → ((𝑅 ≤ (𝑄 ∨ 𝐷) ∧ (𝑄 ∨ 𝐷) ≤ (𝑃 ∨ 𝑄)) → 𝑅 ≤ (𝑃 ∨ 𝑄)))
56	50, 55	mpan2d 706	. . . . 5 ⊢ (𝜑 → (𝑅 ≤ (𝑄 ∨ 𝐷) → 𝑅 ≤ (𝑃 ∨ 𝑄)))
57	56	adantr 485	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → (𝑅 ≤ (𝑄 ∨ 𝐷) → 𝑅 ≤ (𝑃 ∨ 𝑄)))
58	27, 37, 57	3syld 61	. . 3 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → (𝐷 = 𝐸 → 𝑅 ≤ (𝑃 ∨ 𝑄)))
59	58	necon3bd 2972	. 2 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → (¬ 𝑅 ≤ (𝑃 ∨ 𝑄) → 𝐷 ≠ 𝐸))
60	14, 59	mpd 16	1 ⊢ ((𝜑 ∧ 𝐷 ≠ 𝑄) → 𝐷 ≠ 𝐸)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 209   ∧ wa 400   ∧ w3a 1103   = wceq 1570   ∈ wcel 2143   ≠ wne 2958   class class class wbr 5109  ‘cfv 6536  (class class class)co 7410  Basecbs 17264  lecple 17312  joincjn 18362  meetcmee 18363  Latclat 18482  Atomscatm 40057  HLchlt 40144  LPlanesclpl 40286

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-rep 5238  ax-sep 5257  ax-nul 5269  ax-pow 5336  ax-pr 5404  ax-un 7732

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3457  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4488  df-pw 4564  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4873  df-iun 4958  df-br 5110  df-opab 5174  df-mpt 5193  df-id 5556  df-xp 5667  df-rel 5668  df-cnv 5669  df-co 5670  df-dm 5671  df-rn 5672  df-res 5673  df-ima 5674  df-iota 6492  df-fun 6538  df-fn 6539  df-f 6540  df-f1 6541  df-fo 6542  df-f1o 6543  df-fv 6544  df-riota 7367  df-ov 7413  df-oprab 7414  df-proset 18345  df-poset 18364  df-plt 18379  df-lub 18395  df-glb 18396  df-join 18397  df-meet 18398  df-p0 18474  df-lat 18483  df-clat 18550  df-oposet 39970  df-ol 39972  df-oml 39973  df-covers 40060  df-ats 40061  df-atl 40092  df-cvlat 40116  df-hlat 40145  df-llines 40292  df-lplanes 40293

This theorem is referenced by:  dalem4  40459  dalemdnee  40460