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Theorem islpln4 36666
Description: The predicate "is a lattice plane". (Contributed by NM, 17-Jun-2012.)
Hypotheses
Ref Expression
lplnset.b 𝐵 = (Base‘𝐾)
lplnset.c 𝐶 = ( ⋖ ‘𝐾)
lplnset.n 𝑁 = (LLines‘𝐾)
lplnset.p 𝑃 = (LPlanes‘𝐾)
Assertion
Ref Expression
islpln4 ((𝐾𝐴𝑋𝐵) → (𝑋𝑃 ↔ ∃𝑦𝑁 𝑦𝐶𝑋))
Distinct variable groups:   𝑦,𝑁   𝑦,𝐾   𝑦,𝑋
Allowed substitution hints:   𝐴(𝑦)   𝐵(𝑦)   𝐶(𝑦)   𝑃(𝑦)

Proof of Theorem islpln4
StepHypRef Expression
1 lplnset.b . . 3 𝐵 = (Base‘𝐾)
2 lplnset.c . . 3 𝐶 = ( ⋖ ‘𝐾)
3 lplnset.n . . 3 𝑁 = (LLines‘𝐾)
4 lplnset.p . . 3 𝑃 = (LPlanes‘𝐾)
51, 2, 3, 4islpln 36665 . 2 (𝐾𝐴 → (𝑋𝑃 ↔ (𝑋𝐵 ∧ ∃𝑦𝑁 𝑦𝐶𝑋)))
65baibd 542 1 ((𝐾𝐴𝑋𝐵) → (𝑋𝑃 ↔ ∃𝑦𝑁 𝑦𝐶𝑋))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 398   = wceq 1533  wcel 2110  wrex 3139   class class class wbr 5065  cfv 6354  Basecbs 16482  ccvr 36397  LLinesclln 36626  LPlanesclpl 36627
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-sep 5202  ax-nul 5209  ax-pr 5329
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3772  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-nul 4291  df-if 4467  df-sn 4567  df-pr 4569  df-op 4573  df-uni 4838  df-br 5066  df-opab 5128  df-mpt 5146  df-id 5459  df-xp 5560  df-rel 5561  df-cnv 5562  df-co 5563  df-dm 5564  df-iota 6313  df-fun 6356  df-fv 6362  df-lplanes 36634
This theorem is referenced by:  islpln3  36668  lplncmp  36697
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