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Theorem dmresexg 3382
Description: The domain of a restriction to a set exists.
Assertion
Ref Expression
dmresexg |- (B e. C -> dom ( A |` B) e. V)

Proof of Theorem dmresexg
StepHypRef Expression
1 inex1g 2718 . 2 |- (B e. C -> (B i^i dom A) e. V)
2 dmres 3380 . 2 |- dom ( A |` B) = (B i^i dom A)
31, 2syl5eqel 1552 1 |- (B e. C -> dom ( A |` B) e. V)
Colors of variables: wff set class
Syntax hints:   -> wi 3   e. wcel 958  Vcvv 1811   i^i cin 2046  dom cdm 3170   |` cres 3172
This theorem is referenced by:  resfunexg 3579
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 962  ax-gen 963  ax-8 964  ax-10 966  ax-11 967  ax-12 968  ax-13 969  ax-14 970  ax-17 971  ax-4 973  ax-5o 975  ax-6o 978  ax-9o 1123  ax-10o 1140  ax-16 1210  ax-11o 1218  ax-ext 1459  ax-sep 2703  ax-pow 2742  ax-pr 2779
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-ex 981  df-sb 1172  df-eu 1382  df-mo 1383  df-clab 1464  df-cleq 1469  df-clel 1472  df-ne 1587  df-v 1812  df-dif 2049  df-un 2050  df-in 2051  df-ss 2053  df-nul 2281  df-pw 2402  df-sn 2412  df-pr 2413  df-op 2416  df-br 2620  df-opab 2667  df-xp 3184  df-dm 3188  df-res 3190
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