Theorem 4atexlemtlw 40069

Description: Lemma for 4atexlem7 40077. (Contributed by NM, 24-Nov-2012.)

Hypotheses

Ref	Expression
4thatlem.ph	⊢ (𝜑 ↔ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑆 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊 ∧ (𝑃 ∨ 𝑅) = (𝑄 ∨ 𝑅)) ∧ (𝑇 ∈ 𝐴 ∧ (𝑈 ∨ 𝑇) = (𝑉 ∨ 𝑇))) ∧ (𝑃 ≠ 𝑄 ∧ ¬ 𝑆 ≤ (𝑃 ∨ 𝑄))))
4thatlem0.l	⊢ ≤ = (le‘𝐾)
4thatlem0.j	⊢ ∨ = (join‘𝐾)
4thatlem0.m	⊢ ∧ = (meet‘𝐾)
4thatlem0.a	⊢ 𝐴 = (Atoms‘𝐾)
4thatlem0.h	⊢ 𝐻 = (LHyp‘𝐾)
4thatlem0.u	⊢ 𝑈 = ((𝑃 ∨ 𝑄) ∧ 𝑊)
4thatlem0.v	⊢ 𝑉 = ((𝑃 ∨ 𝑆) ∧ 𝑊)

Assertion

Ref	Expression
4atexlemtlw	⊢ (𝜑 → 𝑇 ≤ 𝑊)

Proof of Theorem 4atexlemtlw

Step	Hyp	Ref	Expression
1		eqid 2737	. 2 ⊢ (Base‘𝐾) = (Base‘𝐾)
2		4thatlem0.l	. 2 ⊢ ≤ = (le‘𝐾)
3		4thatlem.ph	. . 3 ⊢ (𝜑 ↔ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑆 ∈ 𝐴 ∧ (𝑅 ∈ 𝐴 ∧ ¬ 𝑅 ≤ 𝑊 ∧ (𝑃 ∨ 𝑅) = (𝑄 ∨ 𝑅)) ∧ (𝑇 ∈ 𝐴 ∧ (𝑈 ∨ 𝑇) = (𝑉 ∨ 𝑇))) ∧ (𝑃 ≠ 𝑄 ∧ ¬ 𝑆 ≤ (𝑃 ∨ 𝑄))))
4	3	4atexlemkl 40059	. 2 ⊢ (𝜑 → 𝐾 ∈ Lat)
5	3	4atexlemt 40055	. . 3 ⊢ (𝜑 → 𝑇 ∈ 𝐴)
6		4thatlem0.a	. . . 4 ⊢ 𝐴 = (Atoms‘𝐾)
7	1, 6	atbase 39290	. . 3 ⊢ (𝑇 ∈ 𝐴 → 𝑇 ∈ (Base‘𝐾))
8	5, 7	syl 17	. 2 ⊢ (𝜑 → 𝑇 ∈ (Base‘𝐾))
9	3	4atexlemk 40049	. . 3 ⊢ (𝜑 → 𝐾 ∈ HL)
10		4thatlem0.j	. . . 4 ⊢ ∨ = (join‘𝐾)
11		4thatlem0.m	. . . 4 ⊢ ∧ = (meet‘𝐾)
12		4thatlem0.h	. . . 4 ⊢ 𝐻 = (LHyp‘𝐾)
13		4thatlem0.u	. . . 4 ⊢ 𝑈 = ((𝑃 ∨ 𝑄) ∧ 𝑊)
14	3, 2, 10, 11, 6, 12, 13	4atexlemu 40066	. . 3 ⊢ (𝜑 → 𝑈 ∈ 𝐴)
15		4thatlem0.v	. . . 4 ⊢ 𝑉 = ((𝑃 ∨ 𝑆) ∧ 𝑊)
16	3, 2, 10, 11, 6, 12, 13, 15	4atexlemv 40067	. . 3 ⊢ (𝜑 → 𝑉 ∈ 𝐴)
17	1, 10, 6	hlatjcl 39368	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑈 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴) → (𝑈 ∨ 𝑉) ∈ (Base‘𝐾))
18	9, 14, 16, 17	syl3anc 1373	. 2 ⊢ (𝜑 → (𝑈 ∨ 𝑉) ∈ (Base‘𝐾))
19	3, 12	4atexlemwb 40061	. 2 ⊢ (𝜑 → 𝑊 ∈ (Base‘𝐾))
20	3	4atexlemkc 40060	. . 3 ⊢ (𝜑 → 𝐾 ∈ CvLat)
21	3, 2, 10, 11, 6, 12, 13, 15	4atexlemunv 40068	. . 3 ⊢ (𝜑 → 𝑈 ≠ 𝑉)
22	3	4atexlemutvt 40056	. . 3 ⊢ (𝜑 → (𝑈 ∨ 𝑇) = (𝑉 ∨ 𝑇))
23	6, 2, 10	cvlsupr4 39346	. . 3 ⊢ ((𝐾 ∈ CvLat ∧ (𝑈 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴) ∧ (𝑈 ≠ 𝑉 ∧ (𝑈 ∨ 𝑇) = (𝑉 ∨ 𝑇))) → 𝑇 ≤ (𝑈 ∨ 𝑉))
24	20, 14, 16, 5, 21, 22, 23	syl132anc 1390	. 2 ⊢ (𝜑 → 𝑇 ≤ (𝑈 ∨ 𝑉))
25	3	4atexlemp 40052	. . . . . 6 ⊢ (𝜑 → 𝑃 ∈ 𝐴)
26	3	4atexlemq 40053	. . . . . 6 ⊢ (𝜑 → 𝑄 ∈ 𝐴)
27	1, 10, 6	hlatjcl 39368	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))
28	9, 25, 26, 27	syl3anc 1373	. . . . 5 ⊢ (𝜑 → (𝑃 ∨ 𝑄) ∈ (Base‘𝐾))
29	1, 2, 11	latmle2 18510	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ (𝑃 ∨ 𝑄) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾)) → ((𝑃 ∨ 𝑄) ∧ 𝑊) ≤ 𝑊)
30	4, 28, 19, 29	syl3anc 1373	. . . 4 ⊢ (𝜑 → ((𝑃 ∨ 𝑄) ∧ 𝑊) ≤ 𝑊)
31	13, 30	eqbrtrid 5178	. . 3 ⊢ (𝜑 → 𝑈 ≤ 𝑊)
32	3, 10, 6	4atexlempsb 40062	. . . . 5 ⊢ (𝜑 → (𝑃 ∨ 𝑆) ∈ (Base‘𝐾))
33	1, 2, 11	latmle2 18510	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ (𝑃 ∨ 𝑆) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾)) → ((𝑃 ∨ 𝑆) ∧ 𝑊) ≤ 𝑊)
34	4, 32, 19, 33	syl3anc 1373	. . . 4 ⊢ (𝜑 → ((𝑃 ∨ 𝑆) ∧ 𝑊) ≤ 𝑊)
35	15, 34	eqbrtrid 5178	. . 3 ⊢ (𝜑 → 𝑉 ≤ 𝑊)
36	1, 6	atbase 39290	. . . . 5 ⊢ (𝑈 ∈ 𝐴 → 𝑈 ∈ (Base‘𝐾))
37	14, 36	syl 17	. . . 4 ⊢ (𝜑 → 𝑈 ∈ (Base‘𝐾))
38	1, 6	atbase 39290	. . . . 5 ⊢ (𝑉 ∈ 𝐴 → 𝑉 ∈ (Base‘𝐾))
39	16, 38	syl 17	. . . 4 ⊢ (𝜑 → 𝑉 ∈ (Base‘𝐾))
40	1, 2, 10	latjle12 18495	. . . 4 ⊢ ((𝐾 ∈ Lat ∧ (𝑈 ∈ (Base‘𝐾) ∧ 𝑉 ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾))) → ((𝑈 ≤ 𝑊 ∧ 𝑉 ≤ 𝑊) ↔ (𝑈 ∨ 𝑉) ≤ 𝑊))
41	4, 37, 39, 19, 40	syl13anc 1374	. . 3 ⊢ (𝜑 → ((𝑈 ≤ 𝑊 ∧ 𝑉 ≤ 𝑊) ↔ (𝑈 ∨ 𝑉) ≤ 𝑊))
42	31, 35, 41	mpbi2and 712	. 2 ⊢ (𝜑 → (𝑈 ∨ 𝑉) ≤ 𝑊)
43	1, 2, 4, 8, 18, 19, 24, 42	lattrd 18491	1 ⊢ (𝜑 → 𝑇 ≤ 𝑊)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1087   = wceq 1540   ∈ wcel 2108   ≠ wne 2940   class class class wbr 5143  ‘cfv 6561  (class class class)co 7431  Basecbs 17247  lecple 17304  joincjn 18357  meetcmee 18358  Latclat 18476  Atomscatm 39264  CvLatclc 39266  HLchlt 39351  LHypclh 39986

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2708  ax-rep 5279  ax-sep 5296  ax-nul 5306  ax-pow 5365  ax-pr 5432  ax-un 7755

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2540  df-eu 2569  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2892  df-ne 2941  df-ral 3062  df-rex 3071  df-rmo 3380  df-reu 3381  df-rab 3437  df-v 3482  df-sbc 3789  df-csb 3900  df-dif 3954  df-un 3956  df-in 3958  df-ss 3968  df-nul 4334  df-if 4526  df-pw 4602  df-sn 4627  df-pr 4629  df-op 4633  df-uni 4908  df-iun 4993  df-br 5144  df-opab 5206  df-mpt 5226  df-id 5578  df-xp 5691  df-rel 5692  df-cnv 5693  df-co 5694  df-dm 5695  df-rn 5696  df-res 5697  df-ima 5698  df-iota 6514  df-fun 6563  df-fn 6564  df-f 6565  df-f1 6566  df-fo 6567  df-f1o 6568  df-fv 6569  df-riota 7388  df-ov 7434  df-oprab 7435  df-proset 18340  df-poset 18359  df-plt 18375  df-lub 18391  df-glb 18392  df-join 18393  df-meet 18394  df-p0 18470  df-p1 18471  df-lat 18477  df-clat 18544  df-oposet 39177  df-ol 39179  df-oml 39180  df-covers 39267  df-ats 39268  df-atl 39299  df-cvlat 39323  df-hlat 39352  df-lhyp 39990

This theorem is referenced by:  4atexlemntlpq  40070  4atexlemnclw  40072  4atexlemcnd  40074