ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  dmmptss GIF version

Theorem dmmptss 5233
Description: The domain of a mapping is a subset of its base class. (Contributed by Scott Fenton, 17-Jun-2013.)
Hypothesis
Ref Expression
dmmpo.1 𝐹 = (𝑥𝐴𝐵)
Assertion
Ref Expression
dmmptss dom 𝐹𝐴
Distinct variable group:   𝑥,𝐴
Allowed substitution hints:   𝐵(𝑥)   𝐹(𝑥)

Proof of Theorem dmmptss
StepHypRef Expression
1 dmmpo.1 . . 3 𝐹 = (𝑥𝐴𝐵)
21dmmpt 5232 . 2 dom 𝐹 = {𝑥𝐴𝐵 ∈ V}
3 ssrab2 3312 . 2 {𝑥𝐴𝐵 ∈ V} ⊆ 𝐴
42, 3eqsstri 3259 1 dom 𝐹𝐴
Colors of variables: wff set class
Syntax hints:   = wceq 1397  wcel 2202  {crab 2514  Vcvv 2802  wss 3200  cmpt 4150  dom cdm 4725
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-br 4089  df-opab 4151  df-mpt 4152  df-xp 4731  df-rel 4732  df-cnv 4733  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738
This theorem is referenced by:  mptrcl  5729  fvmptssdm  5731  elfvmptrab1  5741  mptexg  5878  mptexw  6274  dmmpossx  6363  tposssxp  6414  lmrcl  14915  cnprcl2k  14929  isxms2  15175
  Copyright terms: Public domain W3C validator