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Theorem rspcedvd 2935
Description: Restricted existential specialization, using implicit substitution. Variant of rspcedv 2933. (Contributed by AV, 27-Nov-2019.)
Hypotheses
Ref Expression
rspcedvd.1 (𝜑 → 𝐴 ∈ 𝐵)
rspcedvd.2 ((𝜑 ∧ 𝑥 = 𝐴) → (𝜓 ↔ 𝜒))
rspcedvd.3 (𝜑 → 𝜒)
Assertion
Ref Expression
rspcedvd (𝜑 → ∃𝑥 ∈ 𝐵 𝜓)
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵   𝜑,𝑥   𝜒,𝑥
Allowed substitution hint:   𝜓(𝑥)

Proof of Theorem rspcedvd
StepHypRef Expression
1 rspcedvd.3 . 2 (𝜑 → 𝜒)
2 rspcedvd.1 . . 3 (𝜑 → 𝐴 ∈ 𝐵)
3 rspcedvd.2 . . 3 ((𝜑 ∧ 𝑥 = 𝐴) → (𝜓 ↔ 𝜒))
42, 3rspcedv 2933 . 2 (𝜑 → (𝜒 → ∃𝑥 ∈ 𝐵 𝜓))
51, 4mpd 13 1 (𝜑 → ∃𝑥 ∈ 𝐵 𝜓)
Colors of variables:    wff set class
This proof depends on syntax axioms:   → wi 4   ∧ wa 104   ↔ wb 105   = wceq 1402   ∈ wcel 2209  ∃wrex 2529
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-rex 2534  df-v 2823
This theorem is used by:  rspcime  2937  rspcedeq1vd  2939  rspcedeq2vd  2940  updjud  7429  elpq  10067  modqmuladd  10825  modqmuladdnn0  10827  modfzo0difsn  10854  wrdl1exs1  11420  negfi  12018  divconjdvds  12642  2tp1odd  12677  dfgcd2  12817  qredeu  12901  dvdsprmpweq  13144  oddprmdvds  13163  isnsgrp  13781  dfgrp2  13892  grplrinv  13922  grpidinv  13924  dfgrp3m  13964  ringid  14439  xmettx  15748  gausslemma2dlem1a  16394  2lgslem1b  16425  usgredg4  16673  wlkvtxiedg  16803  wlkvtxiedgg  16804  umgr2cwwkdifex  16883  bj-charfunbi  17054
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