Theorem cdleme1 40274

Description: Part of proof of Lemma E in [Crawley] p. 113. 𝐹 represents their f(r). Here we show r ∨ f(r) = r ∨ u (7th through 5th lines from bottom on p. 113). (Contributed by NM, 4-Jun-2012.)

Hypotheses

Ref	Expression
cdleme1.l	⊢ ≤ = (le‘𝐾)
cdleme1.j	⊢ ∨ = (join‘𝐾)
cdleme1.m	⊢ ∧ = (meet‘𝐾)
cdleme1.a	⊢ 𝐴 = (Atoms‘𝐾)
cdleme1.h	⊢ 𝐻 = (LHyp‘𝐾)
cdleme1.u	⊢ 𝑈 = ((𝑃 ∨ 𝑄) ∧ 𝑊)
cdleme1.f	⊢ 𝐹 = ((𝑅 ∨ 𝑈) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)))

Assertion

Ref	Expression
cdleme1	⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ 𝐹) = (𝑅 ∨ 𝑈))

Proof of Theorem cdleme1

Step	Hyp	Ref	Expression
1		cdleme1.f	. . 3 ⊢ 𝐹 = ((𝑅 ∨ 𝑈) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)))
2	1	oveq2i 7357	. 2 ⊢ (𝑅 ∨ 𝐹) = (𝑅 ∨ ((𝑅 ∨ 𝑈) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊))))
3		simpll 766	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝐾 ∈ HL)
4		simpr3l 1235	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑅 ∈ 𝐴)
5		hllat 39410	. . . . . 6 ⊢ (𝐾 ∈ HL → 𝐾 ∈ Lat)
6	5	ad2antrr 726	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝐾 ∈ Lat)
7		eqid 2731	. . . . . . 7 ⊢ (Base‘𝐾) = (Base‘𝐾)
8		cdleme1.a	. . . . . . 7 ⊢ 𝐴 = (Atoms‘𝐾)
9	7, 8	atbase 39336	. . . . . 6 ⊢ (𝑅 ∈ 𝐴 → 𝑅 ∈ (Base‘𝐾))
10	4, 9	syl 17	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑅 ∈ (Base‘𝐾))
11		cdleme1.u	. . . . . 6 ⊢ 𝑈 = ((𝑃 ∨ 𝑄) ∧ 𝑊)
12		simpr1 1195	. . . . . . . . 9 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑃 ∈ 𝐴)
13	7, 8	atbase 39336	. . . . . . . . 9 ⊢ (𝑃 ∈ 𝐴 → 𝑃 ∈ (Base‘𝐾))
14	12, 13	syl 17	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑃 ∈ (Base‘𝐾))
15		simpr2 1196	. . . . . . . . 9 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑄 ∈ 𝐴)
16	7, 8	atbase 39336	. . . . . . . . 9 ⊢ (𝑄 ∈ 𝐴 → 𝑄 ∈ (Base‘𝐾))
17	15, 16	syl 17	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑄 ∈ (Base‘𝐾))
18		cdleme1.j	. . . . . . . . 9 ⊢ ∨ = (join‘𝐾)
19	7, 18	latjcl 18345	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ 𝑃 ∈ (Base‘𝐾) ∧ 𝑄 ∈ (Base‘𝐾)) → (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))
20	6, 14, 17, 19	syl3anc 1373	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))
21		cdleme1.h	. . . . . . . . 9 ⊢ 𝐻 = (LHyp‘𝐾)
22	7, 21	lhpbase 40045	. . . . . . . 8 ⊢ (𝑊 ∈ 𝐻 → 𝑊 ∈ (Base‘𝐾))
23	22	ad2antlr 727	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑊 ∈ (Base‘𝐾))
24		cdleme1.m	. . . . . . . 8 ⊢ ∧ = (meet‘𝐾)
25	7, 24	latmcl 18346	. . . . . . 7 ⊢ ((𝐾 ∈ Lat ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾)) → ((𝑃 ∨ 𝑄) ∧ 𝑊) ∈ (Base‘𝐾))
26	6, 20, 23, 25	syl3anc 1373	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → ((𝑃 ∨ 𝑄) ∧ 𝑊) ∈ (Base‘𝐾))
27	11, 26	eqeltrid 2835	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑈 ∈ (Base‘𝐾))
28	7, 18	latjcl 18345	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ 𝑅 ∈ (Base‘𝐾) ∧ 𝑈 ∈ (Base‘𝐾)) → (𝑅 ∨ 𝑈) ∈ (Base‘𝐾))
29	6, 10, 27, 28	syl3anc 1373	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ 𝑈) ∈ (Base‘𝐾))
30	7, 18	latjcl 18345	. . . . . . 7 ⊢ ((𝐾 ∈ Lat ∧ 𝑃 ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾)) → (𝑃 ∨ 𝑅) ∈ (Base‘𝐾))
31	6, 14, 10, 30	syl3anc 1373	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑃 ∨ 𝑅) ∈ (Base‘𝐾))
32	7, 24	latmcl 18346	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ (𝑃 ∨ 𝑅) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾)) → ((𝑃 ∨ 𝑅) ∧ 𝑊) ∈ (Base‘𝐾))
33	6, 31, 23, 32	syl3anc 1373	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → ((𝑃 ∨ 𝑅) ∧ 𝑊) ∈ (Base‘𝐾))
34	7, 18	latjcl 18345	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ 𝑄 ∈ (Base‘𝐾) ∧ ((𝑃 ∨ 𝑅) ∧ 𝑊) ∈ (Base‘𝐾)) → (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)) ∈ (Base‘𝐾))
35	6, 17, 33, 34	syl3anc 1373	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)) ∈ (Base‘𝐾))
36		cdleme1.l	. . . . . 6 ⊢ ≤ = (le‘𝐾)
37	7, 36, 18	latlej1 18354	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ 𝑅 ∈ (Base‘𝐾) ∧ 𝑈 ∈ (Base‘𝐾)) → 𝑅 ≤ (𝑅 ∨ 𝑈))
38	6, 10, 27, 37	syl3anc 1373	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑅 ≤ (𝑅 ∨ 𝑈))
39	7, 36, 18, 24, 8	atmod3i1 39911	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑅 ∈ 𝐴 ∧ (𝑅 ∨ 𝑈) ∈ (Base‘𝐾) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)) ∈ (Base‘𝐾)) ∧ 𝑅 ≤ (𝑅 ∨ 𝑈)) → (𝑅 ∨ ((𝑅 ∨ 𝑈) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)))) = ((𝑅 ∨ 𝑈) ∧ (𝑅 ∨ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)))))
40	3, 4, 29, 35, 38, 39	syl131anc 1385	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ ((𝑅 ∨ 𝑈) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)))) = ((𝑅 ∨ 𝑈) ∧ (𝑅 ∨ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)))))
41	7, 36, 18	latlej2 18355	. . . . . . . . 9 ⊢ ((𝐾 ∈ Lat ∧ 𝑃 ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾)) → 𝑅 ≤ (𝑃 ∨ 𝑅))
42	6, 14, 10, 41	syl3anc 1373	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑅 ≤ (𝑃 ∨ 𝑅))
43	7, 36, 18, 24, 8	atmod3i1 39911	. . . . . . . 8 ⊢ ((𝐾 ∈ HL ∧ (𝑅 ∈ 𝐴 ∧ (𝑃 ∨ 𝑅) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾)) ∧ 𝑅 ≤ (𝑃 ∨ 𝑅)) → (𝑅 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)) = ((𝑃 ∨ 𝑅) ∧ (𝑅 ∨ 𝑊)))
44	3, 4, 31, 23, 42, 43	syl131anc 1385	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)) = ((𝑃 ∨ 𝑅) ∧ (𝑅 ∨ 𝑊)))
45		eqid 2731	. . . . . . . . . 10 ⊢ (1.‘𝐾) = (1.‘𝐾)
46	36, 18, 45, 8, 21	lhpjat2 40068	. . . . . . . . 9 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊)) → (𝑅 ∨ 𝑊) = (1.‘𝐾))
47	46	3ad2antr3 1191	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ 𝑊) = (1.‘𝐾))
48	47	oveq2d 7362	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → ((𝑃 ∨ 𝑅) ∧ (𝑅 ∨ 𝑊)) = ((𝑃 ∨ 𝑅) ∧ (1.‘𝐾)))
49		hlol 39408	. . . . . . . . 9 ⊢ (𝐾 ∈ HL → 𝐾 ∈ OL)
50	49	ad2antrr 726	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝐾 ∈ OL)
51	7, 24, 45	olm11 39274	. . . . . . . 8 ⊢ ((𝐾 ∈ OL ∧ (𝑃 ∨ 𝑅) ∈ (Base‘𝐾)) → ((𝑃 ∨ 𝑅) ∧ (1.‘𝐾)) = (𝑃 ∨ 𝑅))
52	50, 31, 51	syl2anc 584	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → ((𝑃 ∨ 𝑅) ∧ (1.‘𝐾)) = (𝑃 ∨ 𝑅))
53	44, 48, 52	3eqtrd 2770	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)) = (𝑃 ∨ 𝑅))
54	53	oveq2d 7362	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑄 ∨ (𝑅 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊))) = (𝑄 ∨ (𝑃 ∨ 𝑅)))
55	7, 18	latj12 18390	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ (𝑄 ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾) ∧ ((𝑃 ∨ 𝑅) ∧ 𝑊) ∈ (Base‘𝐾))) → (𝑄 ∨ (𝑅 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊))) = (𝑅 ∨ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊))))
56	6, 17, 10, 33, 55	syl13anc 1374	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑄 ∨ (𝑅 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊))) = (𝑅 ∨ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊))))
57	7, 18	latj13 18392	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ (𝑄 ∈ (Base‘𝐾) ∧ 𝑃 ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾))) → (𝑄 ∨ (𝑃 ∨ 𝑅)) = (𝑅 ∨ (𝑃 ∨ 𝑄)))
58	6, 17, 14, 10, 57	syl13anc 1374	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑄 ∨ (𝑃 ∨ 𝑅)) = (𝑅 ∨ (𝑃 ∨ 𝑄)))
59	54, 56, 58	3eqtr3rd 2775	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ (𝑃 ∨ 𝑄)) = (𝑅 ∨ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊))))
60	59	oveq2d 7362	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → ((𝑅 ∨ 𝑈) ∧ (𝑅 ∨ (𝑃 ∨ 𝑄))) = ((𝑅 ∨ 𝑈) ∧ (𝑅 ∨ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)))))
61	36, 18, 24, 8, 21, 11	cdlemeulpq 40267	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴)) → 𝑈 ≤ (𝑃 ∨ 𝑄))
62	61	3adantr3 1172	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → 𝑈 ≤ (𝑃 ∨ 𝑄))
63	7, 36, 18	latjlej2 18360	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ (𝑈 ∈ (Base‘𝐾) ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾))) → (𝑈 ≤ (𝑃 ∨ 𝑄) → (𝑅 ∨ 𝑈) ≤ (𝑅 ∨ (𝑃 ∨ 𝑄))))
64	6, 27, 20, 10, 63	syl13anc 1374	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑈 ≤ (𝑃 ∨ 𝑄) → (𝑅 ∨ 𝑈) ≤ (𝑅 ∨ (𝑃 ∨ 𝑄))))
65	62, 64	mpd 15	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ 𝑈) ≤ (𝑅 ∨ (𝑃 ∨ 𝑄)))
66	7, 18	latjcl 18345	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ 𝑅 ∈ (Base‘𝐾) ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾)) → (𝑅 ∨ (𝑃 ∨ 𝑄)) ∈ (Base‘𝐾))
67	6, 10, 20, 66	syl3anc 1373	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ (𝑃 ∨ 𝑄)) ∈ (Base‘𝐾))
68	7, 36, 24	latleeqm1 18373	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ (𝑅 ∨ 𝑈) ∈ (Base‘𝐾) ∧ (𝑅 ∨ (𝑃 ∨ 𝑄)) ∈ (Base‘𝐾)) → ((𝑅 ∨ 𝑈) ≤ (𝑅 ∨ (𝑃 ∨ 𝑄)) ↔ ((𝑅 ∨ 𝑈) ∧ (𝑅 ∨ (𝑃 ∨ 𝑄))) = (𝑅 ∨ 𝑈)))
69	6, 29, 67, 68	syl3anc 1373	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → ((𝑅 ∨ 𝑈) ≤ (𝑅 ∨ (𝑃 ∨ 𝑄)) ↔ ((𝑅 ∨ 𝑈) ∧ (𝑅 ∨ (𝑃 ∨ 𝑄))) = (𝑅 ∨ 𝑈)))
70	65, 69	mpbid 232	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → ((𝑅 ∨ 𝑈) ∧ (𝑅 ∨ (𝑃 ∨ 𝑄))) = (𝑅 ∨ 𝑈))
71	40, 60, 70	3eqtr2rd 2773	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ 𝑈) = (𝑅 ∨ ((𝑅 ∨ 𝑈) ∧ (𝑄 ∨ ((𝑃 ∨ 𝑅) ∧ 𝑊)))))
72	2, 71	eqtr4id 2785	1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊))) → (𝑅 ∨ 𝐹) = (𝑅 ∨ 𝑈))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1086   = wceq 1541   ∈ wcel 2111   class class class wbr 5089  ‘cfv 6481  (class class class)co 7346  Basecbs 17120  lecple 17168  joincjn 18217  meetcmee 18218  1.cp1 18328  Latclat 18337  OLcol 39221  Atomscatm 39310  HLchlt 39397  LHypclh 40031

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 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-rep 5215  ax-sep 5232  ax-nul 5242  ax-pow 5301  ax-pr 5368  ax-un 7668

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 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-ral 3048  df-rex 3057  df-rmo 3346  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3737  df-csb 3846  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-nul 4281  df-if 4473  df-pw 4549  df-sn 4574  df-pr 4576  df-op 4580  df-uni 4857  df-iun 4941  df-iin 4942  df-br 5090  df-opab 5152  df-mpt 5171  df-id 5509  df-xp 5620  df-rel 5621  df-cnv 5622  df-co 5623  df-dm 5624  df-rn 5625  df-res 5626  df-ima 5627  df-iota 6437  df-fun 6483  df-fn 6484  df-f 6485  df-f1 6486  df-fo 6487  df-f1o 6488  df-fv 6489  df-riota 7303  df-ov 7349  df-oprab 7350  df-mpo 7351  df-1st 7921  df-2nd 7922  df-proset 18200  df-poset 18219  df-plt 18234  df-lub 18250  df-glb 18251  df-join 18252  df-meet 18253  df-p0 18329  df-p1 18330  df-lat 18338  df-clat 18405  df-oposet 39223  df-ol 39225  df-oml 39226  df-covers 39313  df-ats 39314  df-atl 39345  df-cvlat 39369  df-hlat 39398  df-psubsp 39550  df-pmap 39551  df-padd 39843  df-lhyp 40035

This theorem is referenced by:  cdleme2  40275  cdleme3b  40276  cdleme3c  40277  cdleme5  40287  cdleme11  40317  cdleme12  40318  cdleme16c  40327  cdleme20g  40362  cdleme35a  40495  cdleme36a  40507