Theorem mptexd 6743

Description: If the domain of a function given by maps-to notation is a set, the function is a set. Deduction version of mptexg 6740. (Contributed by Glauco Siliprandi, 24-Dec-2020.)

Hypothesis

Ref	Expression
mptexd.1	⊢ (𝜑 → 𝐴 ∈ 𝑉)

Assertion

Ref	Expression
mptexd	⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ V)

Distinct variable group:   𝑥,𝐴

Allowed substitution hints:   𝜑(𝑥)   𝐵(𝑥)   𝑉(𝑥)

Proof of Theorem mptexd

Step	Hyp	Ref	Expression
1		mptexd.1	. 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
2		mptexg 6740	. 2 ⊢ (𝐴 ∈ 𝑉 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ V)
3	1, 2	syl 17	1 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ V)

Syntax hints:   → wi 4   ∈ wcel 2166  Vcvv 3414   ↦ cmpt 4952

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1896  ax-4 1910  ax-5 2011  ax-6 2077  ax-7 2114  ax-9 2175  ax-10 2194  ax-11 2209  ax-12 2222  ax-13 2391  ax-ext 2803  ax-rep 4994  ax-sep 5005  ax-nul 5013  ax-pr 5127

This theorem depends on definitions:  df-bi 199  df-an 387  df-or 881  df-3an 1115  df-tru 1662  df-ex 1881  df-nf 1885  df-sb 2070  df-mo 2605  df-eu 2640  df-clab 2812  df-cleq 2818  df-clel 2821  df-nfc 2958  df-ne 3000  df-ral 3122  df-rex 3123  df-reu 3124  df-rab 3126  df-v 3416  df-sbc 3663  df-csb 3758  df-dif 3801  df-un 3803  df-in 3805  df-ss 3812  df-nul 4145  df-if 4307  df-sn 4398  df-pr 4400  df-op 4404  df-uni 4659  df-iun 4742  df-br 4874  df-opab 4936  df-mpt 4953  df-id 5250  df-xp 5348  df-rel 5349  df-cnv 5350  df-co 5351  df-dm 5352  df-rn 5353  df-res 5354  df-ima 5355  df-iota 6086  df-fun 6125  df-fn 6126  df-f 6127  df-f1 6128  df-fo 6129  df-f1o 6130  df-fv 6131

This theorem is referenced by:  rrx0  23565  choicefi  40198  axccdom  40222  climeldmeqmpt  40695  climfveqmpt  40698  climfveqmpt3  40709  climeldmeqmpt3  40716  climfveqmpt2  40720  climeldmeqmpt2  40722  climeqmpt  40724  limsupresicompt  40783  liminfresicompt  40807  liminfvalxr  40810  iccvonmbllem  41686  vonioolem1  41688  vonioolem2  41689  vonicclem1  41691  vonicclem2  41692  smflimmpt  41810  smflimsuplem6  41825  uspgrbispr  42606