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Theorem spcegv 2940
 Description: Existential specialization, using implicit substitution. (Contributed by NM, 14-Aug-1994.)
Hypothesis
Ref Expression
spcgv.1 (x = A → (φψ))
Assertion
Ref Expression
spcegv (A V → (ψxφ))
Distinct variable groups:   ψ,x   x,A
Allowed substitution hints:   φ(x)   V(x)

Proof of Theorem spcegv
StepHypRef Expression
1 nfcv 2489 . 2 xA
2 nfv 1619 . 2 xψ
3 spcgv.1 . 2 (x = A → (φψ))
41, 2, 3spcegf 2935 1 (A V → (ψxφ))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 176  ∃wex 1541   = wceq 1642   ∈ wcel 1710 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334 This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-clab 2340  df-cleq 2346  df-clel 2349  df-nfc 2478  df-v 2861 This theorem is referenced by:  spcev  2946  eqeu  3007  absneu  3794  elunii  3896  opeldm  4910  fvelrn  5413  f1oeng  6032  ce0nnuli  6178
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