Theorem pwexg 4214

Description: Power set axiom expressed in class notation, with the sethood requirement as an antecedent. (Contributed by NM, 30-Oct-2003.)

Assertion

Ref	Expression
pwexg	⊢ (𝐴 ∈ 𝑉 → 𝒫 𝐴 ∈ V)

Proof of Theorem pwexg

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		pweq 3609	. . 3 ⊢ (𝑥 = 𝐴 → 𝒫 𝑥 = 𝒫 𝐴)
2	1	eleq1d 2265	. 2 ⊢ (𝑥 = 𝐴 → (𝒫 𝑥 ∈ V ↔ 𝒫 𝐴 ∈ V))
3		vpwex 4213	. 2 ⊢ 𝒫 𝑥 ∈ V
4	2, 3	vtoclg 2824	1 ⊢ (𝐴 ∈ 𝑉 → 𝒫 𝐴 ∈ V)

Syntax hints:   → wi 4   = wceq 1364   ∈ wcel 2167  Vcvv 2763  𝒫 cpw 3606

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-14 2170  ax-ext 2178  ax-sep 4152  ax-pow 4208

This theorem depends on definitions:  df-bi 117  df-tru 1367  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-v 2765  df-in 3163  df-ss 3170  df-pw 3608

This theorem is referenced by:  pwexd  4215  abssexg  4216  pwex  4217  snexg  4218  pwel  4252  uniexb  4509  xpexg  4778  fabexg  5448  mapex  6722  pmvalg  6727  fopwdom  6906  ssenen  6921  restid2  12950  toponsspwpwg  14342  tgdom  14392  distop  14405  epttop  14410  cldval  14419  ntrfval  14420  clsfval  14421  neifval  14460  neif  14461  neival  14463