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Theorem lplni 36670
Description: Condition implying a lattice plane. (Contributed by NM, 20-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
lplni (((𝐾𝐷𝑌𝐵𝑋𝑁) ∧ 𝑋𝐶𝑌) → 𝑌𝑃)

Proof of Theorem lplni
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 simpl2 1188 . 2 (((𝐾𝐷𝑌𝐵𝑋𝑁) ∧ 𝑋𝐶𝑌) → 𝑌𝐵)
2 breq1 5071 . . . 4 (𝑥 = 𝑋 → (𝑥𝐶𝑌𝑋𝐶𝑌))
32rspcev 3625 . . 3 ((𝑋𝑁𝑋𝐶𝑌) → ∃𝑥𝑁 𝑥𝐶𝑌)
433ad2antl3 1183 . 2 (((𝐾𝐷𝑌𝐵𝑋𝑁) ∧ 𝑋𝐶𝑌) → ∃𝑥𝑁 𝑥𝐶𝑌)
5 simpl1 1187 . . 3 (((𝐾𝐷𝑌𝐵𝑋𝑁) ∧ 𝑋𝐶𝑌) → 𝐾𝐷)
6 lplnset.b . . . 4 𝐵 = (Base‘𝐾)
7 lplnset.c . . . 4 𝐶 = ( ⋖ ‘𝐾)
8 lplnset.n . . . 4 𝑁 = (LLines‘𝐾)
9 lplnset.p . . . 4 𝑃 = (LPlanes‘𝐾)
106, 7, 8, 9islpln 36668 . . 3 (𝐾𝐷 → (𝑌𝑃 ↔ (𝑌𝐵 ∧ ∃𝑥𝑁 𝑥𝐶𝑌)))
115, 10syl 17 . 2 (((𝐾𝐷𝑌𝐵𝑋𝑁) ∧ 𝑋𝐶𝑌) → (𝑌𝑃 ↔ (𝑌𝐵 ∧ ∃𝑥𝑁 𝑥𝐶𝑌)))
121, 4, 11mpbir2and 711 1 (((𝐾𝐷𝑌𝐵𝑋𝑁) ∧ 𝑋𝐶𝑌) → 𝑌𝑃)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 398  w3a 1083   = wceq 1537  wcel 2114  wrex 3141   class class class wbr 5068  cfv 6357  Basecbs 16485  ccvr 36400  LLinesclln 36629  LPlanesclpl 36630
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-sep 5205  ax-nul 5212  ax-pr 5332
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-sbc 3775  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-opab 5131  df-mpt 5149  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-iota 6316  df-fun 6359  df-fv 6365  df-lplanes 36637
This theorem is referenced by:  lplnle  36678  llncvrlpln  36696  lplnexllnN  36702
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