cdlemf2 - Mathbox for Norm Megill

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Theorem cdlemf2 40149

Description: Part of Lemma F in [Crawley] p. 116. (Contributed by NM, 12-Apr-2013.)

**Hypotheses**
Ref	Expression
cdlemf1.l	⊢ ≤ = (le‘𝐾)
cdlemf1.j	⊢ ∨ = (join‘𝐾)
cdlemf1.a	⊢ 𝐴 = (Atoms‘𝐾)
cdlemf1.h	⊢ 𝐻 = (LHyp‘𝐾)
cdlemf2.m	⊢ ∧ = (meet‘𝐾)

**Assertion**
Ref	Expression
cdlemf2	⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) → ∃𝑝 ∈ 𝐴 ∃𝑞 ∈ 𝐴 ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊)))

Distinct variable groups: 𝑞,𝑝,𝐴 𝐻,𝑝,𝑞 𝐾,𝑝,𝑞 ≤ ,𝑝,𝑞 𝑈,𝑝,𝑞 𝑊,𝑝,𝑞 Allowed substitution hints: ∨ (𝑞,𝑝) ∧ (𝑞,𝑝)

**Proof of Theorem cdlemf2**
Step	Hyp	Ref	Expression
1		cdlemf1.l	. . . 4 ⊢ ≤ = (le‘𝐾)
2		cdlemf1.a	. . . 4 ⊢ 𝐴 = (Atoms‘𝐾)
3		cdlemf1.h	. . . 4 ⊢ 𝐻 = (LHyp‘𝐾)
4	1, 2, 3	lhpexnle 39593	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) → ∃𝑝 ∈ 𝐴 ¬ 𝑝 ≤ 𝑊)
5	4	adantr 479	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) → ∃𝑝 ∈ 𝐴 ¬ 𝑝 ≤ 𝑊)
6		cdlemf1.j	. . . . . . 7 ⊢ ∨ = (join‘𝐾)
7	1, 6, 2, 3	cdlemf1 40148	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊) ∧ (𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊)) → ∃𝑞 ∈ 𝐴 (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))
8		simpr1r 1228	. . . . . . . . . 10 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → ¬ 𝑝 ≤ 𝑊)
9		simpr32 1261	. . . . . . . . . 10 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → ¬ 𝑞 ≤ 𝑊)
10		simpr33 1262	. . . . . . . . . . . 12 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑈 ≤ (𝑝 ∨ 𝑞))
11		simplrr 776	. . . . . . . . . . . 12 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑈 ≤ 𝑊)
12		hllat 38949	. . . . . . . . . . . . . 14 ⊢ (𝐾 ∈ HL → 𝐾 ∈ Lat)
13	12	ad3antrrr 728	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝐾 ∈ Lat)
14		simplrl 775	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑈 ∈ 𝐴)
15		eqid 2725	. . . . . . . . . . . . . . 15 ⊢ (Base‘𝐾) = (Base‘𝐾)
16	15, 2	atbase 38875	. . . . . . . . . . . . . 14 ⊢ (𝑈 ∈ 𝐴 → 𝑈 ∈ (Base‘𝐾))
17	14, 16	syl 17	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑈 ∈ (Base‘𝐾))
18		simplll 773	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝐾 ∈ HL)
19		simpr1l 1227	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑝 ∈ 𝐴)
20		simpr2 1192	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑞 ∈ 𝐴)
21	15, 6, 2	hlatjcl 38953	. . . . . . . . . . . . . 14 ⊢ ((𝐾 ∈ HL ∧ 𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴) → (𝑝 ∨ 𝑞) ∈ (Base‘𝐾))
22	18, 19, 20, 21	syl3anc 1368	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → (𝑝 ∨ 𝑞) ∈ (Base‘𝐾))
23	15, 3	lhpbase 39585	. . . . . . . . . . . . . 14 ⊢ (𝑊 ∈ 𝐻 → 𝑊 ∈ (Base‘𝐾))
24	23	ad3antlr 729	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑊 ∈ (Base‘𝐾))
25		cdlemf2.m	. . . . . . . . . . . . . 14 ⊢ ∧ = (meet‘𝐾)
26	15, 1, 25	latlem12 18459	. . . . . . . . . . . . 13 ⊢ ((𝐾 ∈ Lat ∧ (𝑈 ∈ (Base‘𝐾) ∧ (𝑝 ∨ 𝑞) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾))) → ((𝑈 ≤ (𝑝 ∨ 𝑞) ∧ 𝑈 ≤ 𝑊) ↔ 𝑈 ≤ ((𝑝 ∨ 𝑞) ∧ 𝑊)))
27	13, 17, 22, 24, 26	syl13anc 1369	. . . . . . . . . . . 12 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → ((𝑈 ≤ (𝑝 ∨ 𝑞) ∧ 𝑈 ≤ 𝑊) ↔ 𝑈 ≤ ((𝑝 ∨ 𝑞) ∧ 𝑊)))
28	10, 11, 27	mpbi2and 710	. . . . . . . . . . 11 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑈 ≤ ((𝑝 ∨ 𝑞) ∧ 𝑊))
29		hlatl 38946	. . . . . . . . . . . . 13 ⊢ (𝐾 ∈ HL → 𝐾 ∈ AtLat)
30	29	ad3antrrr 728	. . . . . . . . . . . 12 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝐾 ∈ AtLat)
31		simpll 765	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
32		simpr31 1260	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑝 ≠ 𝑞)
33	1, 6, 25, 2, 3	lhpat 39630	. . . . . . . . . . . . 13 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ (𝑞 ∈ 𝐴 ∧ 𝑝 ≠ 𝑞)) → ((𝑝 ∨ 𝑞) ∧ 𝑊) ∈ 𝐴)
34	31, 19, 8, 20, 32, 33	syl122anc 1376	. . . . . . . . . . . 12 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → ((𝑝 ∨ 𝑞) ∧ 𝑊) ∈ 𝐴)
35	1, 2	atcmp 38897	. . . . . . . . . . . 12 ⊢ ((𝐾 ∈ AtLat ∧ 𝑈 ∈ 𝐴 ∧ ((𝑝 ∨ 𝑞) ∧ 𝑊) ∈ 𝐴) → (𝑈 ≤ ((𝑝 ∨ 𝑞) ∧ 𝑊) ↔ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊)))
36	30, 14, 34, 35	syl3anc 1368	. . . . . . . . . . 11 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → (𝑈 ≤ ((𝑝 ∨ 𝑞) ∧ 𝑊) ↔ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊)))
37	28, 36	mpbid 231	. . . . . . . . . 10 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊))
38	8, 9, 37	jca31 513	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) ∧ ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) ∧ 𝑞 ∈ 𝐴 ∧ (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)))) → ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊)))
39	38	3exp2 1351	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) → ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) → (𝑞 ∈ 𝐴 → ((𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)) → ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊))))))
40	39	3impia 1114	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊) ∧ (𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊)) → (𝑞 ∈ 𝐴 → ((𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)) → ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊)))))
41	40	reximdvai 3154	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊) ∧ (𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊)) → (∃𝑞 ∈ 𝐴 (𝑝 ≠ 𝑞 ∧ ¬ 𝑞 ≤ 𝑊 ∧ 𝑈 ≤ (𝑝 ∨ 𝑞)) → ∃𝑞 ∈ 𝐴 ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊))))
42	7, 41	mpd 15	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊) ∧ (𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊)) → ∃𝑞 ∈ 𝐴 ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊)))
43	42	3expia 1118	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) → ((𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ≤ 𝑊) → ∃𝑞 ∈ 𝐴 ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊))))
44	43	expd 414	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) → (𝑝 ∈ 𝐴 → (¬ 𝑝 ≤ 𝑊 → ∃𝑞 ∈ 𝐴 ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊)))))
45	44	reximdvai 3154	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) → (∃𝑝 ∈ 𝐴 ¬ 𝑝 ≤ 𝑊 → ∃𝑝 ∈ 𝐴 ∃𝑞 ∈ 𝐴 ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊))))
46	5, 45	mpd 15	1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑈 ∈ 𝐴 ∧ 𝑈 ≤ 𝑊)) → ∃𝑝 ∈ 𝐴 ∃𝑞 ∈ 𝐴 ((¬ 𝑝 ≤ 𝑊 ∧ ¬ 𝑞 ≤ 𝑊) ∧ 𝑈 = ((𝑝 ∨ 𝑞) ∧ 𝑊)))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ≠ wne 2929 ∃wrex 3059 class class class wbr 5149 ‘cfv 6548 (class class class)co 7418 Basecbs 17181 lecple 17241 joincjn 18304 meetcmee 18305 Latclat 18424 Atomscatm 38849 AtLatcal 38850 HLchlt 38936 LHypclh 39571

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5365 ax-pr 5429 ax-un 7740

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2930 df-ral 3051 df-rex 3060 df-rmo 3363 df-reu 3364 df-rab 3419 df-v 3463 df-sbc 3774 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-nul 4323 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4910 df-iun 4999 df-br 5150 df-opab 5212 df-mpt 5233 df-id 5576 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7374 df-ov 7421 df-oprab 7422 df-proset 18288 df-poset 18306 df-plt 18323 df-lub 18339 df-glb 18340 df-join 18341 df-meet 18342 df-p0 18418 df-p1 18419 df-lat 18425 df-clat 18492 df-oposet 38762 df-ol 38764 df-oml 38765 df-covers 38852 df-ats 38853 df-atl 38884 df-cvlat 38908 df-hlat 38937 df-lhyp 39575

This theorem is referenced by: cdlemf 40150

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