Theorem dmmpt 6199

Description: The domain of the mapping operation in general. (Contributed by NM, 16-May-1995.) (Revised by Mario Carneiro, 22-Mar-2015.)

Hypothesis

Ref	Expression
dmmpt.1	⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵)

Assertion

Ref	Expression
dmmpt	⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V}

Proof of Theorem dmmpt

Step	Hyp	Ref	Expression
1		dfdm4 5845	. 2 ⊢ dom 𝐹 = ran ◡𝐹
2		dfrn4 6161	. 2 ⊢ ran ◡𝐹 = (◡𝐹 “ V)
3		dmmpt.1	. . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵)
4	3	mptpreima 6197	. 2 ⊢ (◡𝐹 “ V) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V}
5	1, 2, 4	3eqtri 2764	1 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V}

Syntax hints:   = wceq 1542   ∈ wcel 2114  {crab 3390  Vcvv 3430   ↦ cmpt 5167  ^◡ccnv 5624  dom cdm 5625  ran crn 5626   “ cima 5628

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5232  ax-pr 5371

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-rab 3391  df-v 3432  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-sn 4569  df-pr 4571  df-op 4575  df-br 5087  df-opab 5149  df-mpt 5168  df-xp 5631  df-rel 5632  df-cnv 5633  df-dm 5635  df-rn 5636  df-res 5637  df-ima 5638

This theorem is referenced by:  dmmptss  6200  dmmptg  6201  dmmptd  6638  fvmpti  6941  funcnvmpt  6944  fvmptss  6955  fvmptss2  6969  mptexgf  7171  tz9.12lem3  9707  cardf2  9861  pmtrsn  19488  00lsp  20970  rgrx0ndm  29680  abrexexd  32597  mptctf  32807  issibf  34496  rdgprc0  35992  imageval  36129  dmmptdff  45673  dmmptssf  45682  dmmptdf2  45683  dvcosre  46361  itgsinexplem1  46403  stirlinglem14  46536  fvmptrabdm  47756