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Theorem 3dim1lem5 36644
Description: Lemma for 3dim1 36645. (Contributed by NM, 26-Jul-2012.)
Hypotheses
Ref Expression
3dim0.j = (join‘𝐾)
3dim0.l = (le‘𝐾)
3dim0.a 𝐴 = (Atoms‘𝐾)
Assertion
Ref Expression
3dim1lem5 (((𝑢𝐴𝑣𝐴𝑤𝐴) ∧ (𝑃𝑢 ∧ ¬ 𝑣 (𝑃 𝑢) ∧ ¬ 𝑤 ((𝑃 𝑢) 𝑣))) → ∃𝑞𝐴𝑟𝐴𝑠𝐴 (𝑃𝑞 ∧ ¬ 𝑟 (𝑃 𝑞) ∧ ¬ 𝑠 ((𝑃 𝑞) 𝑟)))
Distinct variable groups:   𝑟,𝑞,𝑠,𝐴   ,𝑟,𝑠   𝑣,𝑢,𝑤,𝐴,𝑞   ,𝑞,𝑢,𝑣,𝑤   𝑢,𝐾,𝑣,𝑤   ,𝑞   𝑢,𝑟,𝑣,𝑤, ,𝑠   𝑃,𝑞,𝑟,𝑠,𝑢,𝑣,𝑤
Allowed substitution hints:   𝐾(𝑠,𝑟,𝑞)

Proof of Theorem 3dim1lem5
StepHypRef Expression
1 neeq2 3070 . . 3 (𝑞 = 𝑢 → (𝑃𝑞𝑃𝑢))
2 oveq2 7138 . . . . 5 (𝑞 = 𝑢 → (𝑃 𝑞) = (𝑃 𝑢))
32breq2d 5051 . . . 4 (𝑞 = 𝑢 → (𝑟 (𝑃 𝑞) ↔ 𝑟 (𝑃 𝑢)))
43notbid 321 . . 3 (𝑞 = 𝑢 → (¬ 𝑟 (𝑃 𝑞) ↔ ¬ 𝑟 (𝑃 𝑢)))
52oveq1d 7145 . . . . 5 (𝑞 = 𝑢 → ((𝑃 𝑞) 𝑟) = ((𝑃 𝑢) 𝑟))
65breq2d 5051 . . . 4 (𝑞 = 𝑢 → (𝑠 ((𝑃 𝑞) 𝑟) ↔ 𝑠 ((𝑃 𝑢) 𝑟)))
76notbid 321 . . 3 (𝑞 = 𝑢 → (¬ 𝑠 ((𝑃 𝑞) 𝑟) ↔ ¬ 𝑠 ((𝑃 𝑢) 𝑟)))
81, 4, 73anbi123d 1433 . 2 (𝑞 = 𝑢 → ((𝑃𝑞 ∧ ¬ 𝑟 (𝑃 𝑞) ∧ ¬ 𝑠 ((𝑃 𝑞) 𝑟)) ↔ (𝑃𝑢 ∧ ¬ 𝑟 (𝑃 𝑢) ∧ ¬ 𝑠 ((𝑃 𝑢) 𝑟))))
9 breq1 5042 . . . 4 (𝑟 = 𝑣 → (𝑟 (𝑃 𝑢) ↔ 𝑣 (𝑃 𝑢)))
109notbid 321 . . 3 (𝑟 = 𝑣 → (¬ 𝑟 (𝑃 𝑢) ↔ ¬ 𝑣 (𝑃 𝑢)))
11 oveq2 7138 . . . . 5 (𝑟 = 𝑣 → ((𝑃 𝑢) 𝑟) = ((𝑃 𝑢) 𝑣))
1211breq2d 5051 . . . 4 (𝑟 = 𝑣 → (𝑠 ((𝑃 𝑢) 𝑟) ↔ 𝑠 ((𝑃 𝑢) 𝑣)))
1312notbid 321 . . 3 (𝑟 = 𝑣 → (¬ 𝑠 ((𝑃 𝑢) 𝑟) ↔ ¬ 𝑠 ((𝑃 𝑢) 𝑣)))
1410, 133anbi23d 1436 . 2 (𝑟 = 𝑣 → ((𝑃𝑢 ∧ ¬ 𝑟 (𝑃 𝑢) ∧ ¬ 𝑠 ((𝑃 𝑢) 𝑟)) ↔ (𝑃𝑢 ∧ ¬ 𝑣 (𝑃 𝑢) ∧ ¬ 𝑠 ((𝑃 𝑢) 𝑣))))
15 breq1 5042 . . . 4 (𝑠 = 𝑤 → (𝑠 ((𝑃 𝑢) 𝑣) ↔ 𝑤 ((𝑃 𝑢) 𝑣)))
1615notbid 321 . . 3 (𝑠 = 𝑤 → (¬ 𝑠 ((𝑃 𝑢) 𝑣) ↔ ¬ 𝑤 ((𝑃 𝑢) 𝑣)))
17163anbi3d 1439 . 2 (𝑠 = 𝑤 → ((𝑃𝑢 ∧ ¬ 𝑣 (𝑃 𝑢) ∧ ¬ 𝑠 ((𝑃 𝑢) 𝑣)) ↔ (𝑃𝑢 ∧ ¬ 𝑣 (𝑃 𝑢) ∧ ¬ 𝑤 ((𝑃 𝑢) 𝑣))))
188, 14, 17rspc3ev 3614 1 (((𝑢𝐴𝑣𝐴𝑤𝐴) ∧ (𝑃𝑢 ∧ ¬ 𝑣 (𝑃 𝑢) ∧ ¬ 𝑤 ((𝑃 𝑢) 𝑣))) → ∃𝑞𝐴𝑟𝐴𝑠𝐴 (𝑃𝑞 ∧ ¬ 𝑟 (𝑃 𝑞) ∧ ¬ 𝑠 ((𝑃 𝑞) 𝑟)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 399  w3a 1084   = wceq 1538  wcel 2115  wne 3007  wrex 3127   class class class wbr 5039  cfv 6328  (class class class)co 7130  lecple 16551  joincjn 17533  Atomscatm 36441
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 2178  ax-ext 2793
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-clab 2800  df-cleq 2814  df-clel 2892  df-nfc 2960  df-ne 3008  df-ral 3131  df-rex 3132  df-rab 3135  df-v 3473  df-dif 3913  df-un 3915  df-in 3917  df-ss 3927  df-nul 4267  df-if 4441  df-sn 4541  df-pr 4543  df-op 4547  df-uni 4812  df-br 5040  df-iota 6287  df-fv 6336  df-ov 7133
This theorem is referenced by:  3dim1  36645
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