Theorem pweqd 3621

Description: Equality deduction for power class. (Contributed by NM, 27-Nov-2013.)

Hypothesis

Ref	Expression
pweqd.1	⊢ (𝜑 → 𝐴 = 𝐵)

Assertion

Ref	Expression
pweqd	⊢ (𝜑 → 𝒫 𝐴 = 𝒫 𝐵)

Proof of Theorem pweqd

Step	Hyp	Ref	Expression
1		pweqd.1	. 2 ⊢ (𝜑 → 𝐴 = 𝐵)
2		pweq 3619	. 2 ⊢ (𝐴 = 𝐵 → 𝒫 𝐴 = 𝒫 𝐵)
3	1, 2	syl 14	1 ⊢ (𝜑 → 𝒫 𝐴 = 𝒫 𝐵)

Syntax hints:   → wi 4   = wceq 1373  𝒫 cpw 3616

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-5 1470  ax-7 1471  ax-gen 1472  ax-ie1 1516  ax-ie2 1517  ax-8 1527  ax-11 1529  ax-4 1533  ax-17 1549  ax-i9 1553  ax-ial 1557  ax-i5r 1558  ax-ext 2187

This theorem depends on definitions:  df-bi 117  df-tru 1376  df-nf 1484  df-sb 1786  df-clab 2192  df-cleq 2198  df-clel 2201  df-in 3172  df-ss 3179  df-pw 3618

This theorem is referenced by:  pmvalg  6746  issubm  13304  issubg  13509  subgex  13512  issubrng  13961  issubrg  13983  lsssetm  14118  lspfval  14150  lsppropd  14194  sraval  14199  basis1  14519  baspartn  14522  cldval  14571  ntrfval  14572  clsfval  14573  neifval  14612  mopnfss  14919