Theorem arglem1N 33726

Description: Lemma for Desargues' law. Theorem 13.3 of [Crawley] p. 110, 3rd and 4th lines from bottom. In these lemmas, P, Q, R, S, T, U, C, D, E, F, and G represent Crawley's a₀, a₁, a₂, b₀, b₁, b₂, c, z₀, z₁, z₂, and p respectively. (Contributed by NM, 28-Jun-2012.) (New usage is discouraged.)

Hypotheses

Ref	Expression
arglem1.j	|- .\/ = ( join ` K )
arglem1.m	|- ./\ = ( meet ` K )
arglem1.a	|- A = ( Atoms ` K )
arglem1.f	|- F = ( ( P .\/ Q ) ./\ ( S .\/ T ) )
arglem1.g	|- G = ( ( P .\/ S ) ./\ ( Q .\/ T ) )

Assertion

Ref	Expression
arglem1N	|- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> F e. A )

Proof of Theorem arglem1N

Step	Hyp	Ref	Expression
1		arglem1.f	. 2 |- F = ( ( P .\/ Q ) ./\ ( S .\/ T ) )
2		simpl11 1080	. . . . . 6 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> K e. HL )
3		hllat 32899	. . . . . 6 |- ( K e. HL -> K e. Lat )
4	2, 3	syl 17	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> K e. Lat )
5		simpl12 1081	. . . . . 6 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> P e. A )
6		eqid 2422	. . . . . . 7 |- ( Base ` K ) = ( Base ` K )
7		arglem1.a	. . . . . . 7 |- A = ( Atoms ` K )
8	6, 7	atbase 32825	. . . . . 6 |- ( P e. A -> P e. ( Base ` K ) )
9	5, 8	syl 17	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> P e. ( Base ` K ) )
10		simpl13 1082	. . . . . 6 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> Q e. A )
11	6, 7	atbase 32825	. . . . . 6 |- ( Q e. A -> Q e. ( Base ` K ) )
12	10, 11	syl 17	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> Q e. ( Base ` K ) )
13		simpl21 1083	. . . . . 6 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> S e. A )
14	6, 7	atbase 32825	. . . . . 6 |- ( S e. A -> S e. ( Base ` K ) )
15	13, 14	syl 17	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> S e. ( Base ` K ) )
16		simpl22 1084	. . . . . 6 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> T e. A )
17	6, 7	atbase 32825	. . . . . 6 |- ( T e. A -> T e. ( Base ` K ) )
18	16, 17	syl 17	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> T e. ( Base ` K ) )
19		arglem1.j	. . . . . 6 |- .\/ = ( join ` K )
20	6, 19	latj4 16347	. . . . 5 |- ( ( K e. Lat /\ ( P e. ( Base ` K ) /\ Q e. ( Base ` K ) ) /\ ( S e. ( Base ` K ) /\ T e. ( Base ` K ) ) ) -> ( ( P .\/ Q ) .\/ ( S .\/ T ) ) = ( ( P .\/ S ) .\/ ( Q .\/ T ) ) )
21	4, 9, 12, 15, 18, 20	syl122anc 1273	. . . 4 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( ( P .\/ Q ) .\/ ( S .\/ T ) ) = ( ( P .\/ S ) .\/ ( Q .\/ T ) ) )
22		arglem1.g	. . . . . 6 |- G = ( ( P .\/ S ) ./\ ( Q .\/ T ) )
23		simpr 462	. . . . . 6 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> G e. A )
24	22, 23	syl5eqelr 2512	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( ( P .\/ S ) ./\ ( Q .\/ T ) ) e. A )
25		simpl31 1086	. . . . . . 7 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> P =/= S )
26		eqid 2422	. . . . . . . 8 |- ( LLines ` K ) = ( LLines ` K )
27	19, 7, 26	llni2 33047	. . . . . . 7 |- ( ( ( K e. HL /\ P e. A /\ S e. A ) /\ P =/= S ) -> ( P .\/ S ) e. ( LLines ` K ) )
28	2, 5, 13, 25, 27	syl31anc 1267	. . . . . 6 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( P .\/ S ) e. ( LLines ` K ) )
29		simpl32 1087	. . . . . . 7 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> Q =/= T )
30	19, 7, 26	llni2 33047	. . . . . . 7 |- ( ( ( K e. HL /\ Q e. A /\ T e. A ) /\ Q =/= T ) -> ( Q .\/ T ) e. ( LLines ` K ) )
31	2, 10, 16, 29, 30	syl31anc 1267	. . . . . 6 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( Q .\/ T ) e. ( LLines ` K ) )
32		arglem1.m	. . . . . . 7 |- ./\ = ( meet ` K )
33		eqid 2422	. . . . . . 7 |- ( LPlanes ` K ) = ( LPlanes ` K )
34	19, 32, 7, 26, 33	2llnmj 33095	. . . . . 6 |- ( ( K e. HL /\ ( P .\/ S ) e. ( LLines ` K ) /\ ( Q .\/ T ) e. ( LLines ` K ) ) -> ( ( ( P .\/ S ) ./\ ( Q .\/ T ) ) e. A <-> ( ( P .\/ S ) .\/ ( Q .\/ T ) ) e. ( LPlanes ` K ) ) )
35	2, 28, 31, 34	syl3anc 1264	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( ( ( P .\/ S ) ./\ ( Q .\/ T ) ) e. A <-> ( ( P .\/ S ) .\/ ( Q .\/ T ) ) e. ( LPlanes ` K ) ) )
36	24, 35	mpbid 213	. . . 4 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( ( P .\/ S ) .\/ ( Q .\/ T ) ) e. ( LPlanes ` K ) )
37	21, 36	eqeltrd 2507	. . 3 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( ( P .\/ Q ) .\/ ( S .\/ T ) ) e. ( LPlanes ` K ) )
38		simpl23 1085	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> P =/= Q )
39	19, 7, 26	llni2 33047	. . . . 5 |- ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ P =/= Q ) -> ( P .\/ Q ) e. ( LLines ` K ) )
40	2, 5, 10, 38, 39	syl31anc 1267	. . . 4 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( P .\/ Q ) e. ( LLines ` K ) )
41		simpl33 1088	. . . . 5 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> S =/= T )
42	19, 7, 26	llni2 33047	. . . . 5 |- ( ( ( K e. HL /\ S e. A /\ T e. A ) /\ S =/= T ) -> ( S .\/ T ) e. ( LLines ` K ) )
43	2, 13, 16, 41, 42	syl31anc 1267	. . . 4 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( S .\/ T ) e. ( LLines ` K ) )
44	19, 32, 7, 26, 33	2llnmj 33095	. . . 4 |- ( ( K e. HL /\ ( P .\/ Q ) e. ( LLines ` K ) /\ ( S .\/ T ) e. ( LLines ` K ) ) -> ( ( ( P .\/ Q ) ./\ ( S .\/ T ) ) e. A <-> ( ( P .\/ Q ) .\/ ( S .\/ T ) ) e. ( LPlanes ` K ) ) )
45	2, 40, 43, 44	syl3anc 1264	. . 3 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( ( ( P .\/ Q ) ./\ ( S .\/ T ) ) e. A <-> ( ( P .\/ Q ) .\/ ( S .\/ T ) ) e. ( LPlanes ` K ) ) )
46	37, 45	mpbird 235	. 2 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> ( ( P .\/ Q ) ./\ ( S .\/ T ) ) e. A )
47	1, 46	syl5eqel 2511	1 |- ( ( ( ( K e. HL /\ P e. A /\ Q e. A ) /\ ( S e. A /\ T e. A /\ P =/= Q ) /\ ( P =/= S /\ Q =/= T /\ S =/= T ) ) /\ G e. A ) -> F e. A )

Syntax hints:   -> wi 4   <-> wb 187   /\ wa 370   /\ w3a 982   = wceq 1437   e. wcel 1872   =/= wne 2614   ` cfv 5601  (class class class)co 6306   Basecbs 15121   joincjn 16189   meetcmee 16190   Latclat 16291   Atomscatm 32799   HLchlt 32886   LLinesclln 33026   LPlanesclpl 33027

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1663  ax-4 1676  ax-5 1752  ax-6 1798  ax-7 1843  ax-8 1874  ax-9 1876  ax-10 1891  ax-11 1896  ax-12 1909  ax-13 2057  ax-ext 2401  ax-rep 4536  ax-sep 4546  ax-nul 4555  ax-pow 4602  ax-pr 4660  ax-un 6598

This theorem depends on definitions:  df-bi 188  df-or 371  df-an 372  df-3an 984  df-tru 1440  df-ex 1658  df-nf 1662  df-sb 1791  df-eu 2273  df-mo 2274  df-clab 2408  df-cleq 2414  df-clel 2417  df-nfc 2568  df-ne 2616  df-ral 2776  df-rex 2777  df-reu 2778  df-rab 2780  df-v 3082  df-sbc 3300  df-csb 3396  df-dif 3439  df-un 3441  df-in 3443  df-ss 3450  df-nul 3762  df-if 3912  df-pw 3983  df-sn 3999  df-pr 4001  df-op 4005  df-uni 4220  df-iun 4301  df-br 4424  df-opab 4483  df-mpt 4484  df-id 4768  df-xp 4859  df-rel 4860  df-cnv 4861  df-co 4862  df-dm 4863  df-rn 4864  df-res 4865  df-ima 4866  df-iota 5565  df-fun 5603  df-fn 5604  df-f 5605  df-f1 5606  df-fo 5607  df-f1o 5608  df-fv 5609  df-riota 6268  df-ov 6309  df-oprab 6310  df-preset 16173  df-poset 16191  df-plt 16204  df-lub 16220  df-glb 16221  df-join 16222  df-meet 16223  df-p0 16285  df-lat 16292  df-clat 16354  df-oposet 32712  df-ol 32714  df-oml 32715  df-covers 32802  df-ats 32803  df-atl 32834  df-cvlat 32858  df-hlat 32887  df-llines 33033  df-lplanes 33034

This theorem is referenced by: (None)