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Theorem lvoli3 36821
Description: Condition implying a 3-dim lattice volume. (Contributed by NM, 2-Aug-2012.)
Hypotheses
Ref Expression
lvoli3.l = (le‘𝐾)
lvoli3.j = (join‘𝐾)
lvoli3.a 𝐴 = (Atoms‘𝐾)
lvoli3.p 𝑃 = (LPlanes‘𝐾)
lvoli3.v 𝑉 = (LVols‘𝐾)
Assertion
Ref Expression
lvoli3 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → (𝑋 𝑄) ∈ 𝑉)

Proof of Theorem lvoli3
Dummy variables 𝑦 𝑟 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simpl2 1189 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → 𝑋𝑃)
2 simpl3 1190 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → 𝑄𝐴)
3 simpr 488 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → ¬ 𝑄 𝑋)
4 eqidd 2825 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → (𝑋 𝑄) = (𝑋 𝑄))
5 breq2 5056 . . . . . 6 (𝑦 = 𝑋 → (𝑟 𝑦𝑟 𝑋))
65notbid 321 . . . . 5 (𝑦 = 𝑋 → (¬ 𝑟 𝑦 ↔ ¬ 𝑟 𝑋))
7 oveq1 7156 . . . . . 6 (𝑦 = 𝑋 → (𝑦 𝑟) = (𝑋 𝑟))
87eqeq2d 2835 . . . . 5 (𝑦 = 𝑋 → ((𝑋 𝑄) = (𝑦 𝑟) ↔ (𝑋 𝑄) = (𝑋 𝑟)))
96, 8anbi12d 633 . . . 4 (𝑦 = 𝑋 → ((¬ 𝑟 𝑦 ∧ (𝑋 𝑄) = (𝑦 𝑟)) ↔ (¬ 𝑟 𝑋 ∧ (𝑋 𝑄) = (𝑋 𝑟))))
10 breq1 5055 . . . . . 6 (𝑟 = 𝑄 → (𝑟 𝑋𝑄 𝑋))
1110notbid 321 . . . . 5 (𝑟 = 𝑄 → (¬ 𝑟 𝑋 ↔ ¬ 𝑄 𝑋))
12 oveq2 7157 . . . . . 6 (𝑟 = 𝑄 → (𝑋 𝑟) = (𝑋 𝑄))
1312eqeq2d 2835 . . . . 5 (𝑟 = 𝑄 → ((𝑋 𝑄) = (𝑋 𝑟) ↔ (𝑋 𝑄) = (𝑋 𝑄)))
1411, 13anbi12d 633 . . . 4 (𝑟 = 𝑄 → ((¬ 𝑟 𝑋 ∧ (𝑋 𝑄) = (𝑋 𝑟)) ↔ (¬ 𝑄 𝑋 ∧ (𝑋 𝑄) = (𝑋 𝑄))))
159, 14rspc2ev 3621 . . 3 ((𝑋𝑃𝑄𝐴 ∧ (¬ 𝑄 𝑋 ∧ (𝑋 𝑄) = (𝑋 𝑄))) → ∃𝑦𝑃𝑟𝐴𝑟 𝑦 ∧ (𝑋 𝑄) = (𝑦 𝑟)))
161, 2, 3, 4, 15syl112anc 1371 . 2 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → ∃𝑦𝑃𝑟𝐴𝑟 𝑦 ∧ (𝑋 𝑄) = (𝑦 𝑟)))
17 simpl1 1188 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → 𝐾 ∈ HL)
1817hllatd 36608 . . . 4 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → 𝐾 ∈ Lat)
19 eqid 2824 . . . . . 6 (Base‘𝐾) = (Base‘𝐾)
20 lvoli3.p . . . . . 6 𝑃 = (LPlanes‘𝐾)
2119, 20lplnbase 36778 . . . . 5 (𝑋𝑃𝑋 ∈ (Base‘𝐾))
221, 21syl 17 . . . 4 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → 𝑋 ∈ (Base‘𝐾))
23 lvoli3.a . . . . . 6 𝐴 = (Atoms‘𝐾)
2419, 23atbase 36533 . . . . 5 (𝑄𝐴𝑄 ∈ (Base‘𝐾))
252, 24syl 17 . . . 4 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → 𝑄 ∈ (Base‘𝐾))
26 lvoli3.j . . . . 5 = (join‘𝐾)
2719, 26latjcl 17661 . . . 4 ((𝐾 ∈ Lat ∧ 𝑋 ∈ (Base‘𝐾) ∧ 𝑄 ∈ (Base‘𝐾)) → (𝑋 𝑄) ∈ (Base‘𝐾))
2818, 22, 25, 27syl3anc 1368 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → (𝑋 𝑄) ∈ (Base‘𝐾))
29 lvoli3.l . . . 4 = (le‘𝐾)
30 lvoli3.v . . . 4 𝑉 = (LVols‘𝐾)
3119, 29, 26, 23, 20, 30islvol3 36820 . . 3 ((𝐾 ∈ HL ∧ (𝑋 𝑄) ∈ (Base‘𝐾)) → ((𝑋 𝑄) ∈ 𝑉 ↔ ∃𝑦𝑃𝑟𝐴𝑟 𝑦 ∧ (𝑋 𝑄) = (𝑦 𝑟))))
3217, 28, 31syl2anc 587 . 2 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → ((𝑋 𝑄) ∈ 𝑉 ↔ ∃𝑦𝑃𝑟𝐴𝑟 𝑦 ∧ (𝑋 𝑄) = (𝑦 𝑟))))
3316, 32mpbird 260 1 (((𝐾 ∈ HL ∧ 𝑋𝑃𝑄𝐴) ∧ ¬ 𝑄 𝑋) → (𝑋 𝑄) ∈ 𝑉)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 209  wa 399  w3a 1084   = wceq 1538  wcel 2115  wrex 3134   class class class wbr 5052  cfv 6343  (class class class)co 7149  Basecbs 16483  lecple 16572  joincjn 17554  Latclat 17655  Atomscatm 36507  HLchlt 36594  LPlanesclpl 36736  LVolsclvol 36737
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1971  ax-7 2016  ax-8 2117  ax-9 2125  ax-10 2146  ax-11 2162  ax-12 2179  ax-ext 2796  ax-rep 5176  ax-sep 5189  ax-nul 5196  ax-pow 5253  ax-pr 5317  ax-un 7455
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2071  df-mo 2624  df-eu 2655  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2964  df-ne 3015  df-ral 3138  df-rex 3139  df-reu 3140  df-rab 3142  df-v 3482  df-sbc 3759  df-csb 3867  df-dif 3922  df-un 3924  df-in 3926  df-ss 3936  df-nul 4277  df-if 4451  df-pw 4524  df-sn 4551  df-pr 4553  df-op 4557  df-uni 4825  df-iun 4907  df-br 5053  df-opab 5115  df-mpt 5133  df-id 5447  df-xp 5548  df-rel 5549  df-cnv 5550  df-co 5551  df-dm 5552  df-rn 5553  df-res 5554  df-ima 5555  df-iota 6302  df-fun 6345  df-fn 6346  df-f 6347  df-f1 6348  df-fo 6349  df-f1o 6350  df-fv 6351  df-riota 7107  df-ov 7152  df-oprab 7153  df-proset 17538  df-poset 17556  df-plt 17568  df-lub 17584  df-glb 17585  df-join 17586  df-meet 17587  df-p0 17649  df-lat 17656  df-clat 17718  df-oposet 36420  df-ol 36422  df-oml 36423  df-covers 36510  df-ats 36511  df-atl 36542  df-cvlat 36566  df-hlat 36595  df-lplanes 36743  df-lvols 36744
This theorem is referenced by:  dalem9  36916  dalem39  36955
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