Theorem dalem21 39954

Description: Lemma for dath 39996. Show that lines 𝑐𝑑 and 𝑃𝑆 intersect at an atom. (Contributed by NM, 2-Aug-2012.)

Hypotheses

Ref	Expression
dalem.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)))))
dalem.l	⊢ ≤ = (le‘𝐾)
dalem.j	⊢ ∨ = (join‘𝐾)
dalem.a	⊢ 𝐴 = (Atoms‘𝐾)
dalem.ps	⊢ (𝜓 ↔ ((𝑐 ∈ 𝐴 ∧ 𝑑 ∈ 𝐴) ∧ ¬ 𝑐 ≤ 𝑌 ∧ (𝑑 ≠ 𝑐 ∧ ¬ 𝑑 ≤ 𝑌 ∧ 𝐶 ≤ (𝑐 ∨ 𝑑))))
dalem21.m	⊢ ∧ = (meet‘𝐾)
dalem21.o	⊢ 𝑂 = (LPlanes‘𝐾)
dalem21.y	⊢ 𝑌 = ((𝑃 ∨ 𝑄) ∨ 𝑅)
dalem21.z	⊢ 𝑍 = ((𝑆 ∨ 𝑇) ∨ 𝑈)

Assertion

Ref	Expression
dalem21	⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ∈ 𝐴)

Proof of Theorem dalem21

Step	Hyp	Ref	Expression
1		dalem.ph	. . . 4 ⊢ (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 39883	. . 3 ⊢ (𝜑 → 𝐾 ∈ HL)
3	2	3ad2ant1 1133	. 2 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → 𝐾 ∈ HL)
4		dalem.l	. . . 4 ⊢ ≤ = (le‘𝐾)
5		dalem.j	. . . 4 ⊢ ∨ = (join‘𝐾)
6		dalem.a	. . . 4 ⊢ 𝐴 = (Atoms‘𝐾)
7		dalem.ps	. . . 4 ⊢ (𝜓 ↔ ((𝑐 ∈ 𝐴 ∧ 𝑑 ∈ 𝐴) ∧ ¬ 𝑐 ≤ 𝑌 ∧ (𝑑 ≠ 𝑐 ∧ ¬ 𝑑 ≤ 𝑌 ∧ 𝐶 ≤ (𝑐 ∨ 𝑑))))
8	1, 4, 5, 6, 7	dalemcjden 39952	. . 3 ⊢ ((𝜑 ∧ 𝜓) → (𝑐 ∨ 𝑑) ∈ (LLines‘𝐾))
9	8	3adant2 1131	. 2 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → (𝑐 ∨ 𝑑) ∈ (LLines‘𝐾))
10		dalem21.o	. . . 4 ⊢ 𝑂 = (LPlanes‘𝐾)
11		dalem21.y	. . . 4 ⊢ 𝑌 = ((𝑃 ∨ 𝑄) ∨ 𝑅)
12	1, 4, 5, 6, 10, 11	dalempjsen 39913	. . 3 ⊢ (𝜑 → (𝑃 ∨ 𝑆) ∈ (LLines‘𝐾))
13	12	3ad2ant1 1133	. 2 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → (𝑃 ∨ 𝑆) ∈ (LLines‘𝐾))
14	1, 4, 5, 6, 10, 11	dalemply 39914	. . . . . . 7 ⊢ (𝜑 → 𝑃 ≤ 𝑌)
15	14	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 = 𝑍) → 𝑃 ≤ 𝑌)
16		dalem21.z	. . . . . . 7 ⊢ 𝑍 = ((𝑆 ∨ 𝑇) ∨ 𝑈)
17	1, 4, 5, 6, 16	dalemsly 39915	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 = 𝑍) → 𝑆 ≤ 𝑌)
18	1	dalemkelat 39884	. . . . . . . 8 ⊢ (𝜑 → 𝐾 ∈ Lat)
19	1, 6	dalempeb 39899	. . . . . . . 8 ⊢ (𝜑 → 𝑃 ∈ (Base‘𝐾))
20	1, 6	dalemseb 39902	. . . . . . . 8 ⊢ (𝜑 → 𝑆 ∈ (Base‘𝐾))
21	1, 10	dalemyeb 39909	. . . . . . . 8 ⊢ (𝜑 → 𝑌 ∈ (Base‘𝐾))
22		eqid 2736	. . . . . . . . 9 ⊢ (Base‘𝐾) = (Base‘𝐾)
23	22, 4, 5	latjle12 18373	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ (𝑃 ∈ (Base‘𝐾) ∧ 𝑆 ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾))) → ((𝑃 ≤ 𝑌 ∧ 𝑆 ≤ 𝑌) ↔ (𝑃 ∨ 𝑆) ≤ 𝑌))
24	18, 19, 20, 21, 23	syl13anc 1374	. . . . . . 7 ⊢ (𝜑 → ((𝑃 ≤ 𝑌 ∧ 𝑆 ≤ 𝑌) ↔ (𝑃 ∨ 𝑆) ≤ 𝑌))
25	24	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑌 = 𝑍) → ((𝑃 ≤ 𝑌 ∧ 𝑆 ≤ 𝑌) ↔ (𝑃 ∨ 𝑆) ≤ 𝑌))
26	15, 17, 25	mpbi2and 712	. . . . 5 ⊢ ((𝜑 ∧ 𝑌 = 𝑍) → (𝑃 ∨ 𝑆) ≤ 𝑌)
27	26	3adant3 1132	. . . 4 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → (𝑃 ∨ 𝑆) ≤ 𝑌)
28	7	dalem-ccly 39945	. . . . . . 7 ⊢ (𝜓 → ¬ 𝑐 ≤ 𝑌)
29	28	adantl 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝜓) → ¬ 𝑐 ≤ 𝑌)
30	18	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝜓) → 𝐾 ∈ Lat)
31	7, 6	dalemcceb 39949	. . . . . . . . 9 ⊢ (𝜓 → 𝑐 ∈ (Base‘𝐾))
32	31	adantl 481	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝜓) → 𝑐 ∈ (Base‘𝐾))
33	7	dalemddea 39944	. . . . . . . . . 10 ⊢ (𝜓 → 𝑑 ∈ 𝐴)
34	22, 6	atbase 39549	. . . . . . . . . 10 ⊢ (𝑑 ∈ 𝐴 → 𝑑 ∈ (Base‘𝐾))
35	33, 34	syl 17	. . . . . . . . 9 ⊢ (𝜓 → 𝑑 ∈ (Base‘𝐾))
36	35	adantl 481	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝜓) → 𝑑 ∈ (Base‘𝐾))
37	22, 4, 5	latlej1 18371	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ 𝑐 ∈ (Base‘𝐾) ∧ 𝑑 ∈ (Base‘𝐾)) → 𝑐 ≤ (𝑐 ∨ 𝑑))
38	30, 32, 36, 37	syl3anc 1373	. . . . . . 7 ⊢ ((𝜑 ∧ 𝜓) → 𝑐 ≤ (𝑐 ∨ 𝑑))
39		eqid 2736	. . . . . . . . . 10 ⊢ (LLines‘𝐾) = (LLines‘𝐾)
40	22, 39	llnbase 39769	. . . . . . . . 9 ⊢ ((𝑐 ∨ 𝑑) ∈ (LLines‘𝐾) → (𝑐 ∨ 𝑑) ∈ (Base‘𝐾))
41	8, 40	syl 17	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝜓) → (𝑐 ∨ 𝑑) ∈ (Base‘𝐾))
42	21	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝜓) → 𝑌 ∈ (Base‘𝐾))
43	22, 4	lattr 18367	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ (𝑐 ∈ (Base‘𝐾) ∧ (𝑐 ∨ 𝑑) ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾))) → ((𝑐 ≤ (𝑐 ∨ 𝑑) ∧ (𝑐 ∨ 𝑑) ≤ 𝑌) → 𝑐 ≤ 𝑌))
44	30, 32, 41, 42, 43	syl13anc 1374	. . . . . . 7 ⊢ ((𝜑 ∧ 𝜓) → ((𝑐 ≤ (𝑐 ∨ 𝑑) ∧ (𝑐 ∨ 𝑑) ≤ 𝑌) → 𝑐 ≤ 𝑌))
45	38, 44	mpand 695	. . . . . 6 ⊢ ((𝜑 ∧ 𝜓) → ((𝑐 ∨ 𝑑) ≤ 𝑌 → 𝑐 ≤ 𝑌))
46	29, 45	mtod 198	. . . . 5 ⊢ ((𝜑 ∧ 𝜓) → ¬ (𝑐 ∨ 𝑑) ≤ 𝑌)
47	46	3adant2 1131	. . . 4 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → ¬ (𝑐 ∨ 𝑑) ≤ 𝑌)
48		nbrne2 5118	. . . 4 ⊢ (((𝑃 ∨ 𝑆) ≤ 𝑌 ∧ ¬ (𝑐 ∨ 𝑑) ≤ 𝑌) → (𝑃 ∨ 𝑆) ≠ (𝑐 ∨ 𝑑))
49	27, 47, 48	syl2anc 584	. . 3 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → (𝑃 ∨ 𝑆) ≠ (𝑐 ∨ 𝑑))
50	49	necomd 2987	. 2 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → (𝑐 ∨ 𝑑) ≠ (𝑃 ∨ 𝑆))
51		hlatl 39620	. . . . . 6 ⊢ (𝐾 ∈ HL → 𝐾 ∈ AtLat)
52	2, 51	syl 17	. . . . 5 ⊢ (𝜑 → 𝐾 ∈ AtLat)
53	52	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝜓) → 𝐾 ∈ AtLat)
54	1	dalempea 39886	. . . . . . 7 ⊢ (𝜑 → 𝑃 ∈ 𝐴)
55	1	dalemsea 39889	. . . . . . 7 ⊢ (𝜑 → 𝑆 ∈ 𝐴)
56	22, 5, 6	hlatjcl 39627	. . . . . . 7 ⊢ ((𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴) → (𝑃 ∨ 𝑆) ∈ (Base‘𝐾))
57	2, 54, 55, 56	syl3anc 1373	. . . . . 6 ⊢ (𝜑 → (𝑃 ∨ 𝑆) ∈ (Base‘𝐾))
58	57	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝜓) → (𝑃 ∨ 𝑆) ∈ (Base‘𝐾))
59		dalem21.m	. . . . . 6 ⊢ ∧ = (meet‘𝐾)
60	22, 59	latmcl 18363	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ (𝑐 ∨ 𝑑) ∈ (Base‘𝐾) ∧ (𝑃 ∨ 𝑆) ∈ (Base‘𝐾)) → ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ∈ (Base‘𝐾))
61	30, 41, 58, 60	syl3anc 1373	. . . 4 ⊢ ((𝜑 ∧ 𝜓) → ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ∈ (Base‘𝐾))
62	1, 4, 5, 6, 10, 11	dalemcea 39920	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ 𝐴)
63	62	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝜓) → 𝐶 ∈ 𝐴)
64	7	dalemclccjdd 39948	. . . . . 6 ⊢ (𝜓 → 𝐶 ≤ (𝑐 ∨ 𝑑))
65	64	adantl 481	. . . . 5 ⊢ ((𝜑 ∧ 𝜓) → 𝐶 ≤ (𝑐 ∨ 𝑑))
66	1	dalemclpjs 39894	. . . . . 6 ⊢ (𝜑 → 𝐶 ≤ (𝑃 ∨ 𝑆))
67	66	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝜓) → 𝐶 ≤ (𝑃 ∨ 𝑆))
68	1, 6	dalemceb 39898	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ (Base‘𝐾))
69	68	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝜓) → 𝐶 ∈ (Base‘𝐾))
70	22, 4, 59	latlem12 18389	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ (𝐶 ∈ (Base‘𝐾) ∧ (𝑐 ∨ 𝑑) ∈ (Base‘𝐾) ∧ (𝑃 ∨ 𝑆) ∈ (Base‘𝐾))) → ((𝐶 ≤ (𝑐 ∨ 𝑑) ∧ 𝐶 ≤ (𝑃 ∨ 𝑆)) ↔ 𝐶 ≤ ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆))))
71	30, 69, 41, 58, 70	syl13anc 1374	. . . . 5 ⊢ ((𝜑 ∧ 𝜓) → ((𝐶 ≤ (𝑐 ∨ 𝑑) ∧ 𝐶 ≤ (𝑃 ∨ 𝑆)) ↔ 𝐶 ≤ ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆))))
72	65, 67, 71	mpbi2and 712	. . . 4 ⊢ ((𝜑 ∧ 𝜓) → 𝐶 ≤ ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)))
73		eqid 2736	. . . . 5 ⊢ (0.‘𝐾) = (0.‘𝐾)
74	22, 4, 73, 6	atlen0 39570	. . . 4 ⊢ (((𝐾 ∈ AtLat ∧ ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ∈ (Base‘𝐾) ∧ 𝐶 ∈ 𝐴) ∧ 𝐶 ≤ ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆))) → ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ≠ (0.‘𝐾))
75	53, 61, 63, 72, 74	syl31anc 1375	. . 3 ⊢ ((𝜑 ∧ 𝜓) → ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ≠ (0.‘𝐾))
76	75	3adant2 1131	. 2 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ≠ (0.‘𝐾))
77	59, 73, 6, 39	2llnmat 39784	. 2 ⊢ (((𝐾 ∈ HL ∧ (𝑐 ∨ 𝑑) ∈ (LLines‘𝐾) ∧ (𝑃 ∨ 𝑆) ∈ (LLines‘𝐾)) ∧ ((𝑐 ∨ 𝑑) ≠ (𝑃 ∨ 𝑆) ∧ ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ≠ (0.‘𝐾))) → ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ∈ 𝐴)
78	3, 9, 13, 50, 76, 77	syl32anc 1380	1 ⊢ ((𝜑 ∧ 𝑌 = 𝑍 ∧ 𝜓) → ((𝑐 ∨ 𝑑) ∧ (𝑃 ∨ 𝑆)) ∈ 𝐴)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1086   = wceq 1541   ∈ wcel 2113   ≠ wne 2932   class class class wbr 5098  ‘cfv 6492  (class class class)co 7358  Basecbs 17136  lecple 17184  joincjn 18234  meetcmee 18235  0.cp0 18344  Latclat 18354  Atomscatm 39523  AtLatcal 39524  HLchlt 39610  LLinesclln 39751  LPlanesclpl 39752

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2184  ax-ext 2708  ax-rep 5224  ax-sep 5241  ax-nul 5251  ax-pow 5310  ax-pr 5377  ax-un 7680

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3061  df-rmo 3350  df-reu 3351  df-rab 3400  df-v 3442  df-sbc 3741  df-csb 3850  df-dif 3904  df-un 3906  df-in 3908  df-ss 3918  df-nul 4286  df-if 4480  df-pw 4556  df-sn 4581  df-pr 4583  df-op 4587  df-uni 4864  df-iun 4948  df-br 5099  df-opab 5161  df-mpt 5180  df-id 5519  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-riota 7315  df-ov 7361  df-oprab 7362  df-proset 18217  df-poset 18236  df-plt 18251  df-lub 18267  df-glb 18268  df-join 18269  df-meet 18270  df-p0 18346  df-lat 18355  df-clat 18422  df-oposet 39436  df-ol 39438  df-oml 39439  df-covers 39526  df-ats 39527  df-atl 39558  df-cvlat 39582  df-hlat 39611  df-llines 39758  df-lplanes 39759

This theorem is referenced by:  dalem22  39955