Theorem pwexg 4209

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 3604	. . 3 ⊢ (𝑥 = 𝐴 → 𝒫 𝑥 = 𝒫 𝐴)
2	1	eleq1d 2262	. 2 ⊢ (𝑥 = 𝐴 → (𝒫 𝑥 ∈ V ↔ 𝒫 𝐴 ∈ V))
3		vpwex 4208	. 2 ⊢ 𝒫 𝑥 ∈ V
4	2, 3	vtoclg 2820	1 ⊢ (𝐴 ∈ 𝑉 → 𝒫 𝐴 ∈ V)

Syntax hints:   → wi 4   = wceq 1364   ∈ wcel 2164  Vcvv 2760  𝒫 cpw 3601

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 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-14 2167  ax-ext 2175  ax-sep 4147  ax-pow 4203

This theorem depends on definitions:  df-bi 117  df-tru 1367  df-nf 1472  df-sb 1774  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-v 2762  df-in 3159  df-ss 3166  df-pw 3603

This theorem is referenced by:  pwexd  4210  abssexg  4211  pwex  4212  snexg  4213  pwel  4247  uniexb  4504  xpexg  4773  fabexg  5441  mapex  6708  pmvalg  6713  fopwdom  6892  ssenen  6907  restid2  12859  toponsspwpwg  14190  tgdom  14240  distop  14253  epttop  14258  cldval  14267  ntrfval  14268  clsfval  14269  neifval  14308  neif  14309  neival  14311