Theorem 2llnm2N 36696

Description: The meet of two different lattice lines in a lattice plane is an atom. (Contributed by NM, 5-Jul-2012.) (New usage is discouraged.)

Hypotheses

Ref	Expression
2llnm2.l	⊢ ≤ = (le‘𝐾)
2llnm2.m	⊢ ∧ = (meet‘𝐾)
2llnm2.a	⊢ 𝐴 = (Atoms‘𝐾)
2llnm2.n	⊢ 𝑁 = (LLines‘𝐾)
2llnm2.p	⊢ 𝑃 = (LPlanes‘𝐾)

Assertion

Ref	Expression
2llnm2N	⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (𝑋 ∧ 𝑌) ∈ 𝐴)

Proof of Theorem 2llnm2N

Step	Hyp	Ref	Expression
1		simp22 1202	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ 𝑁)
2		simp1 1131	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝐾 ∈ HL)
3		hllat 36491	. . . . 5 ⊢ (𝐾 ∈ HL → 𝐾 ∈ Lat)
4	3	3ad2ant1 1128	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝐾 ∈ Lat)
5		simp21 1201	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ 𝑁)
6		eqid 2819	. . . . . 6 ⊢ (Base‘𝐾) = (Base‘𝐾)
7		2llnm2.n	. . . . . 6 ⊢ 𝑁 = (LLines‘𝐾)
8	6, 7	llnbase 36637	. . . . 5 ⊢ (𝑋 ∈ 𝑁 → 𝑋 ∈ (Base‘𝐾))
9	5, 8	syl 17	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ (Base‘𝐾))
10	6, 7	llnbase 36637	. . . . 5 ⊢ (𝑌 ∈ 𝑁 → 𝑌 ∈ (Base‘𝐾))
11	1, 10	syl 17	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ (Base‘𝐾))
12		2llnm2.m	. . . . 5 ⊢ ∧ = (meet‘𝐾)
13	6, 12	latmcl 17654	. . . 4 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾)) → (𝑋 ∧ 𝑌) ∈ (Base‘𝐾))
14	4, 9, 11, 13	syl3anc 1366	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (𝑋 ∧ 𝑌) ∈ (Base‘𝐾))
15		2llnm2.l	. . . . . . 7 ⊢ ≤ = (le‘𝐾)
16		eqid 2819	. . . . . . 7 ⊢ (join‘𝐾) = (join‘𝐾)
17		2llnm2.p	. . . . . . 7 ⊢ 𝑃 = (LPlanes‘𝐾)
18	15, 16, 7, 17	2llnjN 36695	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (𝑋(join‘𝐾)𝑌) = 𝑊)
19		simp23 1203	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝑊 ∈ 𝑃)
20	18, 19	eqeltrd 2911	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (𝑋(join‘𝐾)𝑌) ∈ 𝑃)
21	6, 15, 16	latlej1 17662	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾)) → 𝑋 ≤ (𝑋(join‘𝐾)𝑌))
22	4, 9, 11, 21	syl3anc 1366	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝑋 ≤ (𝑋(join‘𝐾)𝑌))
23		eqid 2819	. . . . . 6 ⊢ ( ⋖ ‘𝐾) = ( ⋖ ‘𝐾)
24	15, 23, 7, 17	llncvrlpln2 36685	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ∈ 𝑁 ∧ (𝑋(join‘𝐾)𝑌) ∈ 𝑃) ∧ 𝑋 ≤ (𝑋(join‘𝐾)𝑌)) → 𝑋( ⋖ ‘𝐾)(𝑋(join‘𝐾)𝑌))
25	2, 5, 20, 22, 24	syl31anc 1368	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → 𝑋( ⋖ ‘𝐾)(𝑋(join‘𝐾)𝑌))
26	6, 16, 12, 23	cvrexch 36548	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾)) → ((𝑋 ∧ 𝑌)( ⋖ ‘𝐾)𝑌 ↔ 𝑋( ⋖ ‘𝐾)(𝑋(join‘𝐾)𝑌)))
27	2, 9, 11, 26	syl3anc 1366	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → ((𝑋 ∧ 𝑌)( ⋖ ‘𝐾)𝑌 ↔ 𝑋( ⋖ ‘𝐾)(𝑋(join‘𝐾)𝑌)))
28	25, 27	mpbird 259	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (𝑋 ∧ 𝑌)( ⋖ ‘𝐾)𝑌)
29		2llnm2.a	. . . 4 ⊢ 𝐴 = (Atoms‘𝐾)
30	6, 23, 29, 7	atcvrlln 36648	. . 3 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∧ 𝑌) ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾)) ∧ (𝑋 ∧ 𝑌)( ⋖ ‘𝐾)𝑌) → ((𝑋 ∧ 𝑌) ∈ 𝐴 ↔ 𝑌 ∈ 𝑁))
31	2, 14, 11, 28, 30	syl31anc 1368	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → ((𝑋 ∧ 𝑌) ∈ 𝐴 ↔ 𝑌 ∈ 𝑁))
32	1, 31	mpbird 259	1 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑁 ∧ 𝑌 ∈ 𝑁 ∧ 𝑊 ∈ 𝑃) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (𝑋 ∧ 𝑌) ∈ 𝐴)

Syntax hints:   → wi 4   ↔ wb 208   ∧ w3a 1082   = wceq 1531   ∈ wcel 2108   ≠ wne 3014   class class class wbr 5057  ‘cfv 6348  (class class class)co 7148  Basecbs 16475  lecple 16564  joincjn 17546  meetcmee 17547  Latclat 17647   ⋖ ccvr 36390  Atomscatm 36391  HLchlt 36478  LLinesclln 36619  LPlanesclpl 36620

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1905  ax-6 1964  ax-7 2009  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2154  ax-12 2170  ax-ext 2791  ax-rep 5181  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7453

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1084  df-tru 1534  df-ex 1775  df-nf 1779  df-sb 2064  df-mo 2616  df-eu 2648  df-clab 2798  df-cleq 2812  df-clel 2891  df-nfc 2961  df-ne 3015  df-ral 3141  df-rex 3142  df-reu 3143  df-rab 3145  df-v 3495  df-sbc 3771  df-csb 3882  df-dif 3937  df-un 3939  df-in 3941  df-ss 3950  df-nul 4290  df-if 4466  df-pw 4539  df-sn 4560  df-pr 4562  df-op 4566  df-uni 4831  df-iun 4912  df-br 5058  df-opab 5120  df-mpt 5138  df-id 5453  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-riota 7106  df-ov 7151  df-oprab 7152  df-proset 17530  df-poset 17548  df-plt 17560  df-lub 17576  df-glb 17577  df-join 17578  df-meet 17579  df-p0 17641  df-lat 17648  df-clat 17710  df-oposet 36304  df-ol 36306  df-oml 36307  df-covers 36394  df-ats 36395  df-atl 36426  df-cvlat 36450  df-hlat 36479  df-llines 36626  df-lplanes 36627

This theorem is referenced by:  2llnm3N  36697