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Theorem cdleme43frv1snN 34510
Description: Value of 𝑅 / 𝑠𝑁 when ¬ 𝑅 (𝑃 𝑄). (Contributed by NM, 30-Mar-2013.) (New usage is discouraged.)
Hypotheses
Ref Expression
cdlemefr27.b 𝐵 = (Base‘𝐾)
cdlemefr27.l = (le‘𝐾)
cdlemefr27.j = (join‘𝐾)
cdlemefr27.m = (meet‘𝐾)
cdlemefr27.a 𝐴 = (Atoms‘𝐾)
cdlemefr27.h 𝐻 = (LHyp‘𝐾)
cdlemefr27.u 𝑈 = ((𝑃 𝑄) 𝑊)
cdlemefr27.c 𝐶 = ((𝑠 𝑈) (𝑄 ((𝑃 𝑠) 𝑊)))
cdlemefr27.n 𝑁 = if(𝑠 (𝑃 𝑄), 𝐼, 𝐶)
cdleme43fr.x 𝑋 = ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))
Assertion
Ref Expression
cdleme43frv1snN ((𝑅𝐴 ∧ ¬ 𝑅 (𝑃 𝑄)) → 𝑅 / 𝑠𝑁 = 𝑋)
Distinct variable groups:   𝐴,𝑠   ,𝑠   ,𝑠   ,𝑠   𝑃,𝑠   𝑄,𝑠   𝑅,𝑠   𝑈,𝑠   𝑊,𝑠   𝐻,𝑠   𝐾,𝑠   𝐵,𝑠
Allowed substitution hints:   𝐶(𝑠)   𝐼(𝑠)   𝑁(𝑠)   𝑋(𝑠)

Proof of Theorem cdleme43frv1snN
StepHypRef Expression
1 cdlemefr27.c . 2 𝐶 = ((𝑠 𝑈) (𝑄 ((𝑃 𝑠) 𝑊)))
2 cdlemefr27.n . 2 𝑁 = if(𝑠 (𝑃 𝑄), 𝐼, 𝐶)
3 cdleme43fr.x . 2 𝑋 = ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))
41, 2, 3cdleme31sn2 34491 1 ((𝑅𝐴 ∧ ¬ 𝑅 (𝑃 𝑄)) → 𝑅 / 𝑠𝑁 = 𝑋)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 382   = wceq 1474  wcel 1976  csb 3498  ifcif 4035   class class class wbr 4577  cfv 5790  (class class class)co 6527  Basecbs 15641  lecple 15721  joincjn 16713  meetcmee 16714  Atomscatm 33364  LHypclh 34084
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-10 2005  ax-11 2020  ax-12 2033  ax-13 2233  ax-ext 2589
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1700  df-sb 1867  df-clab 2596  df-cleq 2602  df-clel 2605  df-nfc 2739  df-rex 2901  df-rab 2904  df-v 3174  df-sbc 3402  df-csb 3499  df-dif 3542  df-un 3544  df-in 3546  df-ss 3553  df-nul 3874  df-if 4036  df-sn 4125  df-pr 4127  df-op 4131  df-uni 4367  df-br 4578  df-iota 5754  df-fv 5798  df-ov 6530
This theorem is referenced by: (None)
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