Users' Mathboxes Mathbox for Norm Megill < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  cdleme3d Structured version   Visualization version   GIF version

Theorem cdleme3d 34335
Description: Part of proof of Lemma E in [Crawley] p. 113. Lemma leading to cdleme3fa 34340 and cdleme3 34341. (Contributed by NM, 6-Jun-2012.)
Hypotheses
Ref Expression
cdleme1.l = (le‘𝐾)
cdleme1.j = (join‘𝐾)
cdleme1.m = (meet‘𝐾)
cdleme1.a 𝐴 = (Atoms‘𝐾)
cdleme1.h 𝐻 = (LHyp‘𝐾)
cdleme1.u 𝑈 = ((𝑃 𝑄) 𝑊)
cdleme1.f 𝐹 = ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))
cdleme3.3 𝑉 = ((𝑃 𝑅) 𝑊)
Assertion
Ref Expression
cdleme3d 𝐹 = ((𝑅 𝑈) (𝑄 𝑉))

Proof of Theorem cdleme3d
StepHypRef Expression
1 cdleme1.f . 2 𝐹 = ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))
2 cdleme3.3 . . . 4 𝑉 = ((𝑃 𝑅) 𝑊)
32oveq2i 6534 . . 3 (𝑄 𝑉) = (𝑄 ((𝑃 𝑅) 𝑊))
43oveq2i 6534 . 2 ((𝑅 𝑈) (𝑄 𝑉)) = ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))
51, 4eqtr4i 2630 1 𝐹 = ((𝑅 𝑈) (𝑄 𝑉))
Colors of variables: wff setvar class
Syntax hints:   = wceq 1474  cfv 5786  (class class class)co 6523  lecple 15717  joincjn 16709  meetcmee 16710  Atomscatm 33367  LHypclh 34087
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1711  ax-4 1726  ax-5 1825  ax-6 1873  ax-7 1920  ax-10 2004  ax-11 2019  ax-12 2031  ax-13 2228  ax-ext 2585
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 1866  df-clab 2592  df-cleq 2598  df-clel 2601  df-nfc 2735  df-rex 2897  df-rab 2900  df-v 3170  df-dif 3538  df-un 3540  df-in 3542  df-ss 3549  df-nul 3870  df-if 4032  df-sn 4121  df-pr 4123  df-op 4127  df-uni 4363  df-br 4574  df-iota 5750  df-fv 5794  df-ov 6526
This theorem is referenced by:  cdleme3g  34338  cdleme3h  34339  cdleme9  34357
  Copyright terms: Public domain W3C validator