Theorem resex 4949

Description: The restriction of a set is a set. (Contributed by Jeff Madsen, 19-Jun-2011.)

Hypothesis

Ref	Expression
resex.1	⊢ 𝐴 ∈ V

Assertion

Ref	Expression
resex	⊢ (𝐴 ↾ 𝐵) ∈ V

Proof of Theorem resex

Step	Hyp	Ref	Expression
1		resex.1	. 2 ⊢ 𝐴 ∈ V
2		resexg 4948	. 2 ⊢ (𝐴 ∈ V → (𝐴 ↾ 𝐵) ∈ V)
3	1, 2	ax-mp 5	1 ⊢ (𝐴 ↾ 𝐵) ∈ V

Syntax hints:   ∈ wcel 2148  Vcvv 2738   ↾ cres 4629

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 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-ext 2159  ax-sep 4122

This theorem depends on definitions:  df-bi 117  df-tru 1356  df-nf 1461  df-sb 1763  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-v 2740  df-in 3136  df-ss 3143  df-res 4639

This theorem is referenced by:  sbthlemi10  6965  finomni  7138  ctinf  12431