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Theorem lhpexle1lem 40841
Description: Lemma for lhpexle1 40842 and others that eliminates restrictions on 𝑋. (Contributed by NM, 24-Jul-2013.)
Hypotheses
Ref Expression
lhpexle1lem.1 (𝜑 → ∃𝑝𝐴 (𝑝 𝑊𝜓))
lhpexle1lem.2 ((𝜑 ∧ (𝑋𝐴𝑋 𝑊)) → ∃𝑝𝐴 (𝑝 𝑊𝜓𝑝𝑋))
Assertion
Ref Expression
lhpexle1lem (𝜑 → ∃𝑝𝐴 (𝑝 𝑊𝜓𝑝𝑋))
Distinct variable groups:   ,𝑝   𝐴,𝑝   𝑊,𝑝   𝑋,𝑝   𝜑,𝑝
Allowed substitution hint:   𝜓(𝑝)

Proof of Theorem lhpexle1lem
StepHypRef Expression
1 lhpexle1lem.1 . . . 4 (𝜑 → ∃𝑝𝐴 (𝑝 𝑊𝜓))
21adantr 486 . . 3 ((𝜑 ∧ ¬ 𝑋𝐴) → ∃𝑝𝐴 (𝑝 𝑊𝜓))
3 simprl 783 . . . . . 6 ((((𝜑 ∧ ¬ 𝑋𝐴) ∧ 𝑝𝐴) ∧ (𝑝 𝑊𝜓)) → 𝑝 𝑊)
4 simprr 785 . . . . . 6 ((((𝜑 ∧ ¬ 𝑋𝐴) ∧ 𝑝𝐴) ∧ (𝑝 𝑊𝜓)) → 𝜓)
5 simplr 781 . . . . . . 7 ((((𝜑 ∧ ¬ 𝑋𝐴) ∧ 𝑝𝐴) ∧ (𝑝 𝑊𝜓)) → 𝑝𝐴)
6 simpllr 788 . . . . . . 7 ((((𝜑 ∧ ¬ 𝑋𝐴) ∧ 𝑝𝐴) ∧ (𝑝 𝑊𝜓)) → ¬ 𝑋𝐴)
7 nelne2 3058 . . . . . . 7 ((𝑝𝐴 ∧ ¬ 𝑋𝐴) → 𝑝𝑋)
85, 6, 7syl2anc 596 . . . . . 6 ((((𝜑 ∧ ¬ 𝑋𝐴) ∧ 𝑝𝐴) ∧ (𝑝 𝑊𝜓)) → 𝑝𝑋)
93, 4, 83jca 1146 . . . . 5 ((((𝜑 ∧ ¬ 𝑋𝐴) ∧ 𝑝𝐴) ∧ (𝑝 𝑊𝜓)) → (𝑝 𝑊𝜓𝑝𝑋))
109ex 418 . . . 4 (((𝜑 ∧ ¬ 𝑋𝐴) ∧ 𝑝𝐴) → ((𝑝 𝑊𝜓) → (𝑝 𝑊𝜓𝑝𝑋)))
1110reximdva 3180 . . 3 ((𝜑 ∧ ¬ 𝑋𝐴) → (∃𝑝𝐴 (𝑝 𝑊𝜓) → ∃𝑝𝐴 (𝑝 𝑊𝜓𝑝𝑋)))
122, 11mpd 16 . 2 ((𝜑 ∧ ¬ 𝑋𝐴) → ∃𝑝𝐴 (𝑝 𝑊𝜓𝑝𝑋))
131adantr 486 . . 3 ((𝜑 ∧ ¬ 𝑋 𝑊) → ∃𝑝𝐴 (𝑝 𝑊𝜓))
14 simprl 783 . . . . . 6 (((𝜑 ∧ ¬ 𝑋 𝑊) ∧ (𝑝 𝑊𝜓)) → 𝑝 𝑊)
15 simprr 785 . . . . . 6 (((𝜑 ∧ ¬ 𝑋 𝑊) ∧ (𝑝 𝑊𝜓)) → 𝜓)
16 simplr 781 . . . . . . 7 (((𝜑 ∧ ¬ 𝑋 𝑊) ∧ (𝑝 𝑊𝜓)) → ¬ 𝑋 𝑊)
17 nbrne2 5133 . . . . . . 7 ((𝑝 𝑊 ∧ ¬ 𝑋 𝑊) → 𝑝𝑋)
1814, 16, 17syl2anc 596 . . . . . 6 (((𝜑 ∧ ¬ 𝑋 𝑊) ∧ (𝑝 𝑊𝜓)) → 𝑝𝑋)
1914, 15, 183jca 1146 . . . . 5 (((𝜑 ∧ ¬ 𝑋 𝑊) ∧ (𝑝 𝑊𝜓)) → (𝑝 𝑊𝜓𝑝𝑋))
2019ex 418 . . . 4 ((𝜑 ∧ ¬ 𝑋 𝑊) → ((𝑝 𝑊𝜓) → (𝑝 𝑊𝜓𝑝𝑋)))
2120reximdv 3182 . . 3 ((𝜑 ∧ ¬ 𝑋 𝑊) → (∃𝑝𝐴 (𝑝 𝑊𝜓) → ∃𝑝𝐴 (𝑝 𝑊𝜓𝑝𝑋)))
2213, 21mpd 16 . 2 ((𝜑 ∧ ¬ 𝑋 𝑊) → ∃𝑝𝐴 (𝑝 𝑊𝜓𝑝𝑋))
23 lhpexle1lem.2 . 2 ((𝜑 ∧ (𝑋𝐴𝑋 𝑊)) → ∃𝑝𝐴 (𝑝 𝑊𝜓𝑝𝑋))
2412, 22, 23pm2.61dda 827 1 (𝜑 → ∃𝑝𝐴 (𝑝 𝑊𝜓𝑝𝑋))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  ¬ wn 3  wi 4  wa 401  w3a 1103  wcel 2146  wne 2960  wrex 3091   class class class wbr 5111
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-ext 2737
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2744  df-cleq 2757  df-clel 2840  df-ne 2961  df-rex 3092  df-rab 3419  df-v 3459  df-dif 3909  df-un 3911  df-ss 3923  df-nul 4287  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-br 5112
This theorem is used by:  lhpexle1  40842  lhpexle2  40844  lhpexle3  40846
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