Theorem cdleme22b 38282

Description: Part of proof of Lemma E in [Crawley] p. 113, 3rd paragraph, 5th line on p. 115. Show that t ∨ v =/= p ∨ q and s ≤ p ∨ q implies ¬ t ≤ p ∨ q. (Contributed by NM, 2-Dec-2012.)

Hypotheses

Ref	Expression
cdleme22.l	⊢ ≤ = (le‘𝐾)
cdleme22.j	⊢ ∨ = (join‘𝐾)
cdleme22.m	⊢ ∧ = (meet‘𝐾)
cdleme22.a	⊢ 𝐴 = (Atoms‘𝐾)
cdleme22.h	⊢ 𝐻 = (LHyp‘𝐾)

Assertion

Ref	Expression
cdleme22b	⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ¬ 𝑇 ≤ (𝑃 ∨ 𝑄))

Proof of Theorem cdleme22b

Step	Hyp	Ref	Expression
1		simp1l 1195	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝐾 ∈ HL)
2		simp1r1 1267	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑆 ∈ 𝐴)
3		simp1r2 1268	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑇 ∈ 𝐴)
4		simp1r3 1269	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑆 ≠ 𝑇)
5		cdleme22.j	. . . . . . 7 ⊢ ∨ = (join‘𝐾)
6		cdleme22.a	. . . . . . 7 ⊢ 𝐴 = (Atoms‘𝐾)
7		eqid 2738	. . . . . . 7 ⊢ (LLines‘𝐾) = (LLines‘𝐾)
8	5, 6, 7	llni2 37453	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴) ∧ 𝑆 ≠ 𝑇) → (𝑆 ∨ 𝑇) ∈ (LLines‘𝐾))
9	1, 2, 3, 4, 8	syl31anc 1371	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑆 ∨ 𝑇) ∈ (LLines‘𝐾))
10	6, 7	llnneat 37455	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑆 ∨ 𝑇) ∈ (LLines‘𝐾)) → ¬ (𝑆 ∨ 𝑇) ∈ 𝐴)
11	1, 9, 10	syl2anc 583	. . . 4 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ¬ (𝑆 ∨ 𝑇) ∈ 𝐴)
12		eqid 2738	. . . . . 6 ⊢ (0.‘𝐾) = (0.‘𝐾)
13	12, 7	llnn0 37457	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑆 ∨ 𝑇) ∈ (LLines‘𝐾)) → (𝑆 ∨ 𝑇) ≠ (0.‘𝐾))
14	1, 9, 13	syl2anc 583	. . . 4 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑆 ∨ 𝑇) ≠ (0.‘𝐾))
15	11, 14	jca 511	. . 3 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (¬ (𝑆 ∨ 𝑇) ∈ 𝐴 ∧ (𝑆 ∨ 𝑇) ≠ (0.‘𝐾)))
16		df-ne 2943	. . . . 5 ⊢ ((𝑆 ∨ 𝑇) ≠ (0.‘𝐾) ↔ ¬ (𝑆 ∨ 𝑇) = (0.‘𝐾))
17	16	anbi2i 622	. . . 4 ⊢ ((¬ (𝑆 ∨ 𝑇) ∈ 𝐴 ∧ (𝑆 ∨ 𝑇) ≠ (0.‘𝐾)) ↔ (¬ (𝑆 ∨ 𝑇) ∈ 𝐴 ∧ ¬ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
18		pm4.56 985	. . . 4 ⊢ ((¬ (𝑆 ∨ 𝑇) ∈ 𝐴 ∧ ¬ (𝑆 ∨ 𝑇) = (0.‘𝐾)) ↔ ¬ ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
19	17, 18	bitri 274	. . 3 ⊢ ((¬ (𝑆 ∨ 𝑇) ∈ 𝐴 ∧ (𝑆 ∨ 𝑇) ≠ (0.‘𝐾)) ↔ ¬ ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
20	15, 19	sylib 217	. 2 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ¬ ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
21		simp3r2 1280	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑆 ≤ (𝑇 ∨ 𝑉))
22		simp3l 1199	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑉 ∈ 𝐴)
23		cdleme22.l	. . . . . . . . 9 ⊢ ≤ = (le‘𝐾)
24	23, 5, 6	hlatlej1 37316	. . . . . . . 8 ⊢ ((𝐾 ∈ HL ∧ 𝑇 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴) → 𝑇 ≤ (𝑇 ∨ 𝑉))
25	1, 3, 22, 24	syl3anc 1369	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑇 ≤ (𝑇 ∨ 𝑉))
26	1	hllatd 37305	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝐾 ∈ Lat)
27		eqid 2738	. . . . . . . . . 10 ⊢ (Base‘𝐾) = (Base‘𝐾)
28	27, 6	atbase 37230	. . . . . . . . 9 ⊢ (𝑆 ∈ 𝐴 → 𝑆 ∈ (Base‘𝐾))
29	2, 28	syl 17	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑆 ∈ (Base‘𝐾))
30	27, 6	atbase 37230	. . . . . . . . 9 ⊢ (𝑇 ∈ 𝐴 → 𝑇 ∈ (Base‘𝐾))
31	3, 30	syl 17	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑇 ∈ (Base‘𝐾))
32	27, 5, 6	hlatjcl 37308	. . . . . . . . 9 ⊢ ((𝐾 ∈ HL ∧ 𝑇 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴) → (𝑇 ∨ 𝑉) ∈ (Base‘𝐾))
33	1, 3, 22, 32	syl3anc 1369	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑇 ∨ 𝑉) ∈ (Base‘𝐾))
34	27, 23, 5	latjle12 18083	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ (𝑆 ∈ (Base‘𝐾) ∧ 𝑇 ∈ (Base‘𝐾) ∧ (𝑇 ∨ 𝑉) ∈ (Base‘𝐾))) → ((𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑇 ≤ (𝑇 ∨ 𝑉)) ↔ (𝑆 ∨ 𝑇) ≤ (𝑇 ∨ 𝑉)))
35	26, 29, 31, 33, 34	syl13anc 1370	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ((𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑇 ≤ (𝑇 ∨ 𝑉)) ↔ (𝑆 ∨ 𝑇) ≤ (𝑇 ∨ 𝑉)))
36	21, 25, 35	mpbi2and 708	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑆 ∨ 𝑇) ≤ (𝑇 ∨ 𝑉))
37	36	adantr 480	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) → (𝑆 ∨ 𝑇) ≤ (𝑇 ∨ 𝑉))
38		simp3r3 1281	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑆 ≤ (𝑃 ∨ 𝑄))
39	38	adantr 480	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) → 𝑆 ≤ (𝑃 ∨ 𝑄))
40		simpr 484	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) → 𝑇 ≤ (𝑃 ∨ 𝑄))
41		simp21 1204	. . . . . . . . 9 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑃 ∈ 𝐴)
42		simp22 1205	. . . . . . . . 9 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝑄 ∈ 𝐴)
43	27, 5, 6	hlatjcl 37308	. . . . . . . . 9 ⊢ ((𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))
44	1, 41, 42, 43	syl3anc 1369	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))
45	27, 23, 5	latjle12 18083	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ (𝑆 ∈ (Base‘𝐾) ∧ 𝑇 ∈ (Base‘𝐾) ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))) → ((𝑆 ≤ (𝑃 ∨ 𝑄) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) ↔ (𝑆 ∨ 𝑇) ≤ (𝑃 ∨ 𝑄)))
46	26, 29, 31, 44, 45	syl13anc 1370	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ((𝑆 ≤ (𝑃 ∨ 𝑄) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) ↔ (𝑆 ∨ 𝑇) ≤ (𝑃 ∨ 𝑄)))
47	46	adantr 480	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) → ((𝑆 ≤ (𝑃 ∨ 𝑄) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) ↔ (𝑆 ∨ 𝑇) ≤ (𝑃 ∨ 𝑄)))
48	39, 40, 47	mpbi2and 708	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) → (𝑆 ∨ 𝑇) ≤ (𝑃 ∨ 𝑄))
49	27, 5, 6	hlatjcl 37308	. . . . . . . 8 ⊢ ((𝐾 ∈ HL ∧ 𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴) → (𝑆 ∨ 𝑇) ∈ (Base‘𝐾))
50	1, 2, 3, 49	syl3anc 1369	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑆 ∨ 𝑇) ∈ (Base‘𝐾))
51		cdleme22.m	. . . . . . . 8 ⊢ ∧ = (meet‘𝐾)
52	27, 23, 51	latlem12 18099	. . . . . . 7 ⊢ ((𝐾 ∈ Lat ∧ ((𝑆 ∨ 𝑇) ∈ (Base‘𝐾) ∧ (𝑇 ∨ 𝑉) ∈ (Base‘𝐾) ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))) → (((𝑆 ∨ 𝑇) ≤ (𝑇 ∨ 𝑉) ∧ (𝑆 ∨ 𝑇) ≤ (𝑃 ∨ 𝑄)) ↔ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄))))
53	26, 50, 33, 44, 52	syl13anc 1370	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (((𝑆 ∨ 𝑇) ≤ (𝑇 ∨ 𝑉) ∧ (𝑆 ∨ 𝑇) ≤ (𝑃 ∨ 𝑄)) ↔ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄))))
54	53	adantr 480	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) → (((𝑆 ∨ 𝑇) ≤ (𝑇 ∨ 𝑉) ∧ (𝑆 ∨ 𝑇) ≤ (𝑃 ∨ 𝑄)) ↔ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄))))
55	37, 48, 54	mpbi2and 708	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ 𝑇 ≤ (𝑃 ∨ 𝑄)) → (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))
56	55	ex 412	. . 3 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑇 ≤ (𝑃 ∨ 𝑄) → (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄))))
57		hlop 37303	. . . . . . . 8 ⊢ (𝐾 ∈ HL → 𝐾 ∈ OP)
58	1, 57	syl 17	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → 𝐾 ∈ OP)
59	58	adantr 480	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴 ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))) → 𝐾 ∈ OP)
60	50	adantr 480	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴 ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))) → (𝑆 ∨ 𝑇) ∈ (Base‘𝐾))
61		simprl 767	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴 ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))) → ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴)
62		simprr 769	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴 ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))) → (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))
63	27, 23, 12, 6	leat3 37236	. . . . . 6 ⊢ (((𝐾 ∈ OP ∧ (𝑆 ∨ 𝑇) ∈ (Base‘𝐾) ∧ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴) ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄))) → ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
64	59, 60, 61, 62, 63	syl31anc 1371	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴 ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))) → ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
65	64	exp32 420	. . . 4 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴 → ((𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) → ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾)))))
66		breq2 5074	. . . . . . . . 9 ⊢ (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) = (0.‘𝐾) → ((𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ↔ (𝑆 ∨ 𝑇) ≤ (0.‘𝐾)))
67	66	biimpa 476	. . . . . . . 8 ⊢ ((((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) = (0.‘𝐾) ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄))) → (𝑆 ∨ 𝑇) ≤ (0.‘𝐾))
68	27, 23, 12	ople0 37128	. . . . . . . . 9 ⊢ ((𝐾 ∈ OP ∧ (𝑆 ∨ 𝑇) ∈ (Base‘𝐾)) → ((𝑆 ∨ 𝑇) ≤ (0.‘𝐾) ↔ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
69	58, 50, 68	syl2anc 583	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ((𝑆 ∨ 𝑇) ≤ (0.‘𝐾) ↔ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
70	67, 69	syl5ib 243	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ((((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) = (0.‘𝐾) ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄))) → (𝑆 ∨ 𝑇) = (0.‘𝐾)))
71	70	imp 406	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) = (0.‘𝐾) ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))) → (𝑆 ∨ 𝑇) = (0.‘𝐾))
72	71	olcd 870	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) ∧ (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) = (0.‘𝐾) ∧ (𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)))) → ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾)))
73	72	exp32 420	. . . 4 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) = (0.‘𝐾) → ((𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) → ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾)))))
74		simp3r1 1279	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄))
75	5, 51, 12, 6	2atmat0 37467	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑇 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ (𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄))) → (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴 ∨ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) = (0.‘𝐾)))
76	1, 3, 22, 41, 42, 74, 75	syl33anc 1383	. . . 4 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) ∈ 𝐴 ∨ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) = (0.‘𝐾)))
77	65, 73, 76	mpjaod 856	. . 3 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ((𝑆 ∨ 𝑇) ≤ ((𝑇 ∨ 𝑉) ∧ (𝑃 ∨ 𝑄)) → ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾))))
78	56, 77	syld 47	. 2 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → (𝑇 ≤ (𝑃 ∨ 𝑄) → ((𝑆 ∨ 𝑇) ∈ 𝐴 ∨ (𝑆 ∨ 𝑇) = (0.‘𝐾))))
79	20, 78	mtod 197	1 ⊢ (((𝐾 ∈ HL ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ≠ 𝑄) ∧ (𝑉 ∈ 𝐴 ∧ ((𝑇 ∨ 𝑉) ≠ (𝑃 ∨ 𝑄) ∧ 𝑆 ≤ (𝑇 ∨ 𝑉) ∧ 𝑆 ≤ (𝑃 ∨ 𝑄)))) → ¬ 𝑇 ≤ (𝑃 ∨ 𝑄))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 205   ∧ wa 395   ∨ wo 843   ∧ w3a 1085   = wceq 1539   ∈ wcel 2108   ≠ wne 2942   class class class wbr 5070  ‘cfv 6418  (class class class)co 7255  Basecbs 16840  lecple 16895  joincjn 17944  meetcmee 17945  0.cp0 18056  Latclat 18064  OPcops 37113  Atomscatm 37204  HLchlt 37291  LLinesclln 37432  LHypclh 37925

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-reu 3070  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-id 5480  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-proset 17928  df-poset 17946  df-plt 17963  df-lub 17979  df-glb 17980  df-join 17981  df-meet 17982  df-p0 18058  df-p1 18059  df-lat 18065  df-clat 18132  df-oposet 37117  df-ol 37119  df-oml 37120  df-covers 37207  df-ats 37208  df-atl 37239  df-cvlat 37263  df-hlat 37292  df-llines 37439

This theorem is referenced by:  cdleme22cN  38283  cdleme27a  38308