Users' Mathboxes Mathbox for Norm Megill < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  3dimlem1 Structured version   Visualization version   GIF version

Theorem 3dimlem1 39441
Description: Lemma for 3dim1 39450. (Contributed by NM, 25-Jul-2012.)
Hypotheses
Ref Expression
3dim0.j = (join‘𝐾)
3dim0.l = (le‘𝐾)
3dim0.a 𝐴 = (Atoms‘𝐾)
Assertion
Ref Expression
3dimlem1 (((𝑄𝑅 ∧ ¬ 𝑆 (𝑄 𝑅) ∧ ¬ 𝑇 ((𝑄 𝑅) 𝑆)) ∧ 𝑃 = 𝑄) → (𝑃𝑅 ∧ ¬ 𝑆 (𝑃 𝑅) ∧ ¬ 𝑇 ((𝑃 𝑅) 𝑆)))

Proof of Theorem 3dimlem1
StepHypRef Expression
1 neeq1 3001 . . 3 (𝑃 = 𝑄 → (𝑃𝑅𝑄𝑅))
2 oveq1 7438 . . . . 5 (𝑃 = 𝑄 → (𝑃 𝑅) = (𝑄 𝑅))
32breq2d 5160 . . . 4 (𝑃 = 𝑄 → (𝑆 (𝑃 𝑅) ↔ 𝑆 (𝑄 𝑅)))
43notbid 318 . . 3 (𝑃 = 𝑄 → (¬ 𝑆 (𝑃 𝑅) ↔ ¬ 𝑆 (𝑄 𝑅)))
52oveq1d 7446 . . . . 5 (𝑃 = 𝑄 → ((𝑃 𝑅) 𝑆) = ((𝑄 𝑅) 𝑆))
65breq2d 5160 . . . 4 (𝑃 = 𝑄 → (𝑇 ((𝑃 𝑅) 𝑆) ↔ 𝑇 ((𝑄 𝑅) 𝑆)))
76notbid 318 . . 3 (𝑃 = 𝑄 → (¬ 𝑇 ((𝑃 𝑅) 𝑆) ↔ ¬ 𝑇 ((𝑄 𝑅) 𝑆)))
81, 4, 73anbi123d 1435 . 2 (𝑃 = 𝑄 → ((𝑃𝑅 ∧ ¬ 𝑆 (𝑃 𝑅) ∧ ¬ 𝑇 ((𝑃 𝑅) 𝑆)) ↔ (𝑄𝑅 ∧ ¬ 𝑆 (𝑄 𝑅) ∧ ¬ 𝑇 ((𝑄 𝑅) 𝑆))))
98biimparc 479 1 (((𝑄𝑅 ∧ ¬ 𝑆 (𝑄 𝑅) ∧ ¬ 𝑇 ((𝑄 𝑅) 𝑆)) ∧ 𝑃 = 𝑄) → (𝑃𝑅 ∧ ¬ 𝑆 (𝑃 𝑅) ∧ ¬ 𝑇 ((𝑃 𝑅) 𝑆)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 395  w3a 1086   = wceq 1537  wne 2938   class class class wbr 5148  cfv 6563  (class class class)co 7431  lecple 17305  joincjn 18369  Atomscatm 39245
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 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-ext 2706
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-sb 2063  df-clab 2713  df-cleq 2727  df-clel 2814  df-ne 2939  df-rab 3434  df-v 3480  df-dif 3966  df-un 3968  df-ss 3980  df-nul 4340  df-if 4532  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-br 5149  df-iota 6516  df-fv 6571  df-ov 7434
This theorem is referenced by:  3dim1  39450
  Copyright terms: Public domain W3C validator