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Theorem mptrabex 7213
Description: If the domain of a function given by maps-to notation is a class abstraction based on a set, the function is a set. (Contributed by AV, 16-Jul-2019.) (Revised by AV, 26-Mar-2021.)
Hypothesis
Ref Expression
mptrabex.1 𝐴 ∈ V
Assertion
Ref Expression
mptrabex (𝑥 ∈ {𝑦𝐴𝜑} ↦ 𝐵) ∈ V
Distinct variable groups:   𝑥,𝑦,𝐴   𝜑,𝑥
Allowed substitution hints:   𝜑(𝑦)   𝐵(𝑥,𝑦)

Proof of Theorem mptrabex
StepHypRef Expression
1 mptrabex.1 . . 3 𝐴 ∈ V
21rabex 5300 . 2 {𝑦𝐴𝜑} ∈ V
32mptex 7211 1 (𝑥 ∈ {𝑦𝐴𝜑} ↦ 𝐵) ∈ V
Colors of variables: wff setvar class
Syntax hints:  wcel 2145  {crab 3417  Vcvv 3457  cmpt 5186
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1818  ax-4 1832  ax-5 1933  ax-6 1990  ax-7 2031  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2737  ax-rep 5232  ax-sep 5251  ax-nul 5261  ax-pr 5395
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1566  df-fal 1576  df-ex 1803  df-nf 1807  df-sb 2094  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-ral 3080  df-rex 3090  df-reu 3371  df-rab 3418  df-v 3459  df-sbc 3748  df-csb 3856  df-dif 3910  df-un 3912  df-in 3914  df-ss 3924  df-nul 4289  df-if 4484  df-pw 4560  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4869  df-iun 4954  df-br 5106  df-opab 5168  df-mpt 5187  df-id 5547  df-xp 5658  df-rel 5659  df-cnv 5660  df-co 5661  df-dm 5662  df-rn 5663  df-res 5664  df-ima 5665  df-iota 6481  df-fun 6527  df-fn 6528  df-f 6529  df-f1 6530  df-fo 6531  df-f1o 6532  df-fv 6533
This theorem is referenced by:  odzval  16841  pmtrfval  19511  dmdprd  20061  dprdval  20066  psrlidm  22071  psrass23l  22076  psrass23  22078  mplsubrg  22114  mplmonmul  22147  mplbas2  22153  fusgrfis  29589  wlksnwwlknvbij  30166  clwwlkvbij  30373  psrmonmul  33857  sitgval  34639  fwddifnval  36526  diafval  41667  dicfval  41811
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