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Theorem mpoex 6388
Description: If the domain of an operation given by maps-to notation is a set, the operation is a set. (Contributed by Mario Carneiro, 20-Dec-2013.)
Hypotheses
Ref Expression
mpoex.1 𝐴 ∈ V
mpoex.2 𝐵 ∈ V
Assertion
Ref Expression
mpoex (𝑥𝐴, 𝑦𝐵𝐶) ∈ V
Distinct variable groups:   𝑥,𝑦,𝐴   𝑦,𝐵
Allowed substitution hints:   𝐵(𝑥)   𝐶(𝑥,𝑦)

Proof of Theorem mpoex
StepHypRef Expression
1 mpoex.1 . 2 𝐴 ∈ V
2 mpoex.2 . . 3 𝐵 ∈ V
32rgenw 2588 . 2 𝑥𝐴 𝐵 ∈ V
4 eqid 2231 . . 3 (𝑥𝐴, 𝑦𝐵𝐶) = (𝑥𝐴, 𝑦𝐵𝐶)
54mpoexxg 6384 . 2 ((𝐴 ∈ V ∧ ∀𝑥𝐴 𝐵 ∈ V) → (𝑥𝐴, 𝑦𝐵𝐶) ∈ V)
61, 3, 5mp2an 426 1 (𝑥𝐴, 𝑦𝐵𝐶) ∈ V
Colors of variables: wff set class
Syntax hints:  wcel 2202  wral 2511  Vcvv 2803  cmpo 6030
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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4209  ax-sep 4212  ax-pow 4270  ax-pr 4305  ax-un 4536
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ral 2516  df-rex 2517  df-reu 2518  df-rab 2520  df-v 2805  df-sbc 3033  df-csb 3129  df-un 3205  df-in 3207  df-ss 3214  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-iun 3977  df-br 4094  df-opab 4156  df-mpt 4157  df-id 4396  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-f1 5338  df-fo 5339  df-f1o 5340  df-fv 5341  df-oprab 6032  df-mpo 6033  df-1st 6312  df-2nd 6313
This theorem is referenced by:  prdsex  13415  blfn  14630  cndsex  14632  cnfldstr  14637  mpocnfldadd  14640  mpocnfldmul  14642  fnpsr  14746
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