Theorem resex 4786

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 4785	. 2 ⊢ (𝐴 ∈ V → (𝐴 ↾ 𝐵) ∈ V)
3	1, 2	ax-mp 7	1 ⊢ (𝐴 ↾ 𝐵) ∈ V

Syntax hints:   ∈ wcel 1445  Vcvv 2633   ↾ cres 4469

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 668  ax-5 1388  ax-7 1389  ax-gen 1390  ax-ie1 1434  ax-ie2 1435  ax-8 1447  ax-10 1448  ax-11 1449  ax-i12 1450  ax-bndl 1451  ax-4 1452  ax-17 1471  ax-i9 1475  ax-ial 1479  ax-i5r 1480  ax-ext 2077  ax-sep 3978

This theorem depends on definitions:  df-bi 116  df-tru 1299  df-nf 1402  df-sb 1700  df-clab 2082  df-cleq 2088  df-clel 2091  df-nfc 2224  df-v 2635  df-in 3019  df-ss 3026  df-res 4479

This theorem is referenced by:  sbthlemi10  6755  finomni  6883