Theorem 2llnm4 39594

Description: Two lattice lines that majorize the same atom always meet. (Contributed by NM, 20-Jul-2012.)

Hypotheses

Ref	Expression
2llnm4.l	⊢ ≤ = (le‘𝐾)
2llnm4.m	⊢ ∧ = (meet‘𝐾)
2llnm4.z	⊢ 0 = (0.‘𝐾)
2llnm4.a	⊢ 𝐴 = (Atoms‘𝐾)
2llnm4.n	⊢ 𝑁 = (LLines‘𝐾)

Assertion

Ref	Expression
2llnm4	⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → (𝑋 ∧ 𝑌) ≠ 0 )

Proof of Theorem 2llnm4

Step	Hyp	Ref	Expression
1		hlatl 39383	. . 3 ⊢ (𝐾 ∈ HL → 𝐾 ∈ AtLat)
2	1	3ad2ant1 1133	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝐾 ∈ AtLat)
3		hllat 39386	. . . 4 ⊢ (𝐾 ∈ HL → 𝐾 ∈ Lat)
4	3	3ad2ant1 1133	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝐾 ∈ Lat)
5		simp22 1208	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝑋 ∈ 𝑁)
6		eqid 2736	. . . . 5 ⊢ (Base‘𝐾) = (Base‘𝐾)
7		2llnm4.n	. . . . 5 ⊢ 𝑁 = (LLines‘𝐾)
8	6, 7	llnbase 39533	. . . 4 ⊢ (𝑋 ∈ 𝑁 → 𝑋 ∈ (Base‘𝐾))
9	5, 8	syl 17	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝑋 ∈ (Base‘𝐾))
10		simp23 1209	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝑌 ∈ 𝑁)
11	6, 7	llnbase 39533	. . . 4 ⊢ (𝑌 ∈ 𝑁 → 𝑌 ∈ (Base‘𝐾))
12	10, 11	syl 17	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝑌 ∈ (Base‘𝐾))
13		2llnm4.m	. . . 4 ⊢ ∧ = (meet‘𝐾)
14	6, 13	latmcl 18455	. . 3 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾)) → (𝑋 ∧ 𝑌) ∈ (Base‘𝐾))
15	4, 9, 12, 14	syl3anc 1373	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → (𝑋 ∧ 𝑌) ∈ (Base‘𝐾))
16		simp21 1207	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝑃 ∈ 𝐴)
17		simp3 1138	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌))
18		2llnm4.a	. . . . . 6 ⊢ 𝐴 = (Atoms‘𝐾)
19	6, 18	atbase 39312	. . . . 5 ⊢ (𝑃 ∈ 𝐴 → 𝑃 ∈ (Base‘𝐾))
20	16, 19	syl 17	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝑃 ∈ (Base‘𝐾))
21		2llnm4.l	. . . . 5 ⊢ ≤ = (le‘𝐾)
22	6, 21, 13	latlem12 18481	. . . 4 ⊢ ((𝐾 ∈ Lat ∧ (𝑃 ∈ (Base‘𝐾) ∧ 𝑋 ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾))) → ((𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌) ↔ 𝑃 ≤ (𝑋 ∧ 𝑌)))
23	4, 20, 9, 12, 22	syl13anc 1374	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → ((𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌) ↔ 𝑃 ≤ (𝑋 ∧ 𝑌)))
24	17, 23	mpbid 232	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → 𝑃 ≤ (𝑋 ∧ 𝑌))
25		2llnm4.z	. . 3 ⊢ 0 = (0.‘𝐾)
26	6, 21, 25, 18	atlen0 39333	. 2 ⊢ (((𝐾 ∈ AtLat ∧ (𝑋 ∧ 𝑌) ∈ (Base‘𝐾) ∧ 𝑃 ∈ 𝐴) ∧ 𝑃 ≤ (𝑋 ∧ 𝑌)) → (𝑋 ∧ 𝑌) ≠ 0 )
27	2, 15, 16, 24, 26	syl31anc 1375	1 ⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁) ∧ (𝑃 ≤ 𝑋 ∧ 𝑃 ≤ 𝑌)) → (𝑋 ∧ 𝑌) ≠ 0 )

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1086   = wceq 1540   ∈ wcel 2109   ≠ wne 2933   class class class wbr 5124  ‘cfv 6536  (class class class)co 7410  Basecbs 17233  lecple 17283  meetcmee 18329  0.cp0 18438  Latclat 18446  Atomscatm 39286  AtLatcal 39287  HLchlt 39373  LLinesclln 39515

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 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2708  ax-rep 5254  ax-sep 5271  ax-nul 5281  ax-pow 5340  ax-pr 5407  ax-un 7734

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2540  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2810  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3062  df-rmo 3364  df-reu 3365  df-rab 3421  df-v 3466  df-sbc 3771  df-csb 3880  df-dif 3934  df-un 3936  df-in 3938  df-ss 3948  df-nul 4314  df-if 4506  df-pw 4582  df-sn 4607  df-pr 4609  df-op 4613  df-uni 4889  df-iun 4974  df-br 5125  df-opab 5187  df-mpt 5207  df-id 5553  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-ima 5672  df-iota 6489  df-fun 6538  df-fn 6539  df-f 6540  df-f1 6541  df-fo 6542  df-f1o 6543  df-fv 6544  df-riota 7367  df-ov 7413  df-oprab 7414  df-proset 18311  df-poset 18330  df-plt 18345  df-lub 18361  df-glb 18362  df-join 18363  df-meet 18364  df-p0 18440  df-lat 18447  df-covers 39289  df-ats 39290  df-atl 39321  df-cvlat 39345  df-hlat 39374  df-llines 39522

This theorem is referenced by:  2llnmeqat  39595  dalem2  39685