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Theorem mptrcl 5788
Description: Reverse closure for a mapping: If the function value of a mapping has a member, the argument belongs to the base class of the mapping. (Contributed by AV, 4-Apr-2020.) (Revised by Jim Kingdon, 27-Mar-2023.)
Hypothesis
Ref Expression
fvmpt2.1 𝐹 = (𝑥𝐴𝐵)
Assertion
Ref Expression
mptrcl (𝐼 ∈ (𝐹𝑋) → 𝑋𝐴)
Distinct variable group:   𝑥,𝐴
Allowed substitution hints:   𝐵(𝑥)   𝐹(𝑥)   𝐼(𝑥)   𝑋(𝑥)

Proof of Theorem mptrcl
StepHypRef Expression
1 fvmpt2.1 . . 3 𝐹 = (𝑥𝐴𝐵)
21dmmptss 5284 . 2 dom 𝐹𝐴
31funmpt2 5416 . . . 4 Fun 𝐹
4 funrel 5394 . . . 4 (Fun 𝐹 → Rel 𝐹)
53, 4ax-mp 5 . . 3 Rel 𝐹
6 relelfvdm 5727 . . 3 ((Rel 𝐹𝐼 ∈ (𝐹𝑋)) → 𝑋 ∈ dom 𝐹)
75, 6mpan 428 . 2 (𝐼 ∈ (𝐹𝑋) → 𝑋 ∈ dom 𝐹)
82, 7sselid 3246 1 (𝐼 ∈ (𝐹𝑋) → 𝑋𝐴)
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4   = wceq 1402  wcel 2209  cmpt 4192  dom cdm 4774  Rel wrel 4779  Fun wfun 5371  cfv 5377
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fv 5385
This theorem is used by:  indval0  9298  bitsval  12712  divsfval  13651  submrcl  13780  issubg  13978  isnsg  14007  issubrng  14509  issubrg  14531  zrhval  14954  asclfval  15023  psmetdmdm  15427  psmetf  15428  psmet0  15430  psmettri2  15431  psmetres2  15436  plybss  15836  edgval  16313  wlkmex  16572  wlkreslem  16631  trlsv  16637  isclwwlk  16647  clwwlkbp  16648  clwwlknonmpo  16681  eupthv  16699  trlsegvdegfi  16720  eupth2lem3lem1fi  16721  eupth2lem3lem2fi  16722  eupth2lem3lem6fi  16724  eupth2lem3lem4fi  16726
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