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Theorem mptrcl 5759
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 5258 . 2 dom 𝐹𝐴
31funmpt2 5390 . . . 4 Fun 𝐹
4 funrel 5368 . . . 4 (Fun 𝐹 → Rel 𝐹)
53, 4ax-mp 5 . . 3 Rel 𝐹
6 relelfvdm 5701 . . 3 ((Rel 𝐹𝐼 ∈ (𝐹𝑋)) → 𝑋 ∈ dom 𝐹)
75, 6mpan 424 . 2 (𝐼 ∈ (𝐹𝑋) → 𝑋 ∈ dom 𝐹)
82, 7sselid 3235 1 (𝐼 ∈ (𝐹𝑋) → 𝑋𝐴)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1398  wcel 2203  cmpt 4170  dom cdm 4748  Rel wrel 4753  Fun wfun 5345  cfv 5351
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-14 2206  ax-ext 2214  ax-sep 4227  ax-pow 4286  ax-pr 4321
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2814  df-un 3214  df-in 3216  df-ss 3223  df-pw 3670  df-sn 3694  df-pr 3695  df-op 3697  df-uni 3914  df-br 4109  df-opab 4171  df-mpt 4172  df-id 4413  df-xp 4754  df-rel 4755  df-cnv 4756  df-co 4757  df-dm 4758  df-rn 4759  df-res 4760  df-ima 4761  df-iota 5311  df-fun 5353  df-fv 5359
This theorem is referenced by:  bitsval  12622  divsfval  13530  submrcl  13673  issubg  13879  isnsg  13908  issubrng  14333  issubrg  14355  zrhval  14752  psmetdmdm  15176  psmetf  15177  psmet0  15179  psmettri2  15180  psmetres2  15185  plybss  15585  edgval  16042  wlkmex  16301  wlkreslem  16360  trlsv  16366  isclwwlk  16376  clwwlkbp  16377  clwwlknonmpo  16410  eupthv  16428  trlsegvdegfi  16449  eupth2lem3lem1fi  16450  eupth2lem3lem2fi  16451  eupth2lem3lem6fi  16453  eupth2lem3lem4fi  16455
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