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Theorem isline2 35060
Description: Definition of line in terms of projective map. (Contributed by NM, 25-Jan-2012.)
Hypotheses
Ref Expression
isline2.j = (join‘𝐾)
isline2.a 𝐴 = (Atoms‘𝐾)
isline2.n 𝑁 = (Lines‘𝐾)
isline2.m 𝑀 = (pmap‘𝐾)
Assertion
Ref Expression
isline2 (𝐾 ∈ Lat → (𝑋𝑁 ↔ ∃𝑝𝐴𝑞𝐴 (𝑝𝑞𝑋 = (𝑀‘(𝑝 𝑞)))))
Distinct variable groups:   𝑞,𝑝,𝐴   𝐾,𝑝,𝑞   𝑋,𝑝,𝑞
Allowed substitution hints:   (𝑞,𝑝)   𝑀(𝑞,𝑝)   𝑁(𝑞,𝑝)

Proof of Theorem isline2
Dummy variable 𝑟 is distinct from all other variables.
StepHypRef Expression
1 eqid 2622 . . 3 (le‘𝐾) = (le‘𝐾)
2 isline2.j . . 3 = (join‘𝐾)
3 isline2.a . . 3 𝐴 = (Atoms‘𝐾)
4 isline2.n . . 3 𝑁 = (Lines‘𝐾)
51, 2, 3, 4isline 35025 . 2 (𝐾 ∈ Lat → (𝑋𝑁 ↔ ∃𝑝𝐴𝑞𝐴 (𝑝𝑞𝑋 = {𝑟𝐴𝑟(le‘𝐾)(𝑝 𝑞)})))
6 simpl 473 . . . . . . 7 ((𝐾 ∈ Lat ∧ (𝑝𝐴𝑞𝐴)) → 𝐾 ∈ Lat)
7 eqid 2622 . . . . . . . . 9 (Base‘𝐾) = (Base‘𝐾)
87, 3atbase 34576 . . . . . . . 8 (𝑝𝐴𝑝 ∈ (Base‘𝐾))
98ad2antrl 764 . . . . . . 7 ((𝐾 ∈ Lat ∧ (𝑝𝐴𝑞𝐴)) → 𝑝 ∈ (Base‘𝐾))
107, 3atbase 34576 . . . . . . . 8 (𝑞𝐴𝑞 ∈ (Base‘𝐾))
1110ad2antll 765 . . . . . . 7 ((𝐾 ∈ Lat ∧ (𝑝𝐴𝑞𝐴)) → 𝑞 ∈ (Base‘𝐾))
127, 2latjcl 17051 . . . . . . 7 ((𝐾 ∈ Lat ∧ 𝑝 ∈ (Base‘𝐾) ∧ 𝑞 ∈ (Base‘𝐾)) → (𝑝 𝑞) ∈ (Base‘𝐾))
136, 9, 11, 12syl3anc 1326 . . . . . 6 ((𝐾 ∈ Lat ∧ (𝑝𝐴𝑞𝐴)) → (𝑝 𝑞) ∈ (Base‘𝐾))
14 isline2.m . . . . . . 7 𝑀 = (pmap‘𝐾)
157, 1, 3, 14pmapval 35043 . . . . . 6 ((𝐾 ∈ Lat ∧ (𝑝 𝑞) ∈ (Base‘𝐾)) → (𝑀‘(𝑝 𝑞)) = {𝑟𝐴𝑟(le‘𝐾)(𝑝 𝑞)})
1613, 15syldan 487 . . . . 5 ((𝐾 ∈ Lat ∧ (𝑝𝐴𝑞𝐴)) → (𝑀‘(𝑝 𝑞)) = {𝑟𝐴𝑟(le‘𝐾)(𝑝 𝑞)})
1716eqeq2d 2632 . . . 4 ((𝐾 ∈ Lat ∧ (𝑝𝐴𝑞𝐴)) → (𝑋 = (𝑀‘(𝑝 𝑞)) ↔ 𝑋 = {𝑟𝐴𝑟(le‘𝐾)(𝑝 𝑞)}))
1817anbi2d 740 . . 3 ((𝐾 ∈ Lat ∧ (𝑝𝐴𝑞𝐴)) → ((𝑝𝑞𝑋 = (𝑀‘(𝑝 𝑞))) ↔ (𝑝𝑞𝑋 = {𝑟𝐴𝑟(le‘𝐾)(𝑝 𝑞)})))
19182rexbidva 3056 . 2 (𝐾 ∈ Lat → (∃𝑝𝐴𝑞𝐴 (𝑝𝑞𝑋 = (𝑀‘(𝑝 𝑞))) ↔ ∃𝑝𝐴𝑞𝐴 (𝑝𝑞𝑋 = {𝑟𝐴𝑟(le‘𝐾)(𝑝 𝑞)})))
205, 19bitr4d 271 1 (𝐾 ∈ Lat → (𝑋𝑁 ↔ ∃𝑝𝐴𝑞𝐴 (𝑝𝑞𝑋 = (𝑀‘(𝑝 𝑞)))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 384   = wceq 1483  wcel 1990  wne 2794  wrex 2913  {crab 2916   class class class wbr 4653  cfv 5888  (class class class)co 6650  Basecbs 15857  lecple 15948  joincjn 16944  Latclat 17045  Atomscatm 34550  Linesclines 34780  pmapcpmap 34783
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-lub 16974  df-glb 16975  df-join 16976  df-meet 16977  df-lat 17046  df-ats 34554  df-lines 34787  df-pmap 34790
This theorem is referenced by:  isline3  35062  lncvrelatN  35067  linepsubclN  35237
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