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Theorem fnfvima 6496
Description: The function value of an operand in a set is contained in the image of that set, using the Fn abbreviation. (Contributed by Stefan O'Rear, 10-Mar-2015.)
Assertion
Ref Expression
fnfvima ((𝐹 Fn 𝐴𝑆𝐴𝑋𝑆) → (𝐹𝑋) ∈ (𝐹𝑆))

Proof of Theorem fnfvima
StepHypRef Expression
1 fnfun 5988 . . . 4 (𝐹 Fn 𝐴 → Fun 𝐹)
213ad2ant1 1082 . . 3 ((𝐹 Fn 𝐴𝑆𝐴𝑋𝑆) → Fun 𝐹)
3 simp2 1062 . . . 4 ((𝐹 Fn 𝐴𝑆𝐴𝑋𝑆) → 𝑆𝐴)
4 fndm 5990 . . . . 5 (𝐹 Fn 𝐴 → dom 𝐹 = 𝐴)
543ad2ant1 1082 . . . 4 ((𝐹 Fn 𝐴𝑆𝐴𝑋𝑆) → dom 𝐹 = 𝐴)
63, 5sseqtr4d 3642 . . 3 ((𝐹 Fn 𝐴𝑆𝐴𝑋𝑆) → 𝑆 ⊆ dom 𝐹)
72, 6jca 554 . 2 ((𝐹 Fn 𝐴𝑆𝐴𝑋𝑆) → (Fun 𝐹𝑆 ⊆ dom 𝐹))
8 simp3 1063 . 2 ((𝐹 Fn 𝐴𝑆𝐴𝑋𝑆) → 𝑋𝑆)
9 funfvima2 6493 . 2 ((Fun 𝐹𝑆 ⊆ dom 𝐹) → (𝑋𝑆 → (𝐹𝑋) ∈ (𝐹𝑆)))
107, 8, 9sylc 65 1 ((𝐹 Fn 𝐴𝑆𝐴𝑋𝑆) → (𝐹𝑋) ∈ (𝐹𝑆))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384  w3a 1037   = wceq 1483  wcel 1990  wss 3574  dom cdm 5114  cima 5117  Fun wfun 5882   Fn wfn 5883  cfv 5888
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pr 4906
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-fv 5896
This theorem is referenced by:  isomin  6587  isofrlem  6590  fnwelem  7292  php3  8146  fissuni  8271  unxpwdom2  8493  cantnflt  8569  dfac12lem2  8966  ackbij2  9065  isf34lem7  9201  isf34lem6  9202  zorn2lem2  9319  ttukeylem5  9335  tskuni  9605  axpre-sup  9990  limsupval2  14211  mhmima  17363  ghmnsgima  17684  psgnunilem1  17913  dprdfeq0  18421  dprd2dlem1  18440  lmhmima  19047  lmcnp  21108  basqtop  21514  tgqtop  21515  kqfvima  21533  reghmph  21596  uzrest  21701  qustgpopn  21923  qustgplem  21924  cphsqrtcl  22984  lhop  23779  ig1peu  23931  ig1pdvds  23936  plypf1  23968  f1otrg  25751  fimaproj  29900  txomap  29901  sitgaddlemb  30410  cvmopnlem  31260  mrsubrn  31410  msubrn  31426  nosupno  31849  nosupbday  31851  noetalem3  31865  scutun12  31917  scutbdaybnd  31921  scutbdaylt  31922  poimirlem4  33413  poimirlem6  33415  poimirlem7  33416  poimirlem16  33425  poimirlem17  33426  poimirlem19  33428  poimirlem20  33429  poimirlem23  33432  cnambfre  33458  ftc1anclem7  33491  ftc1anc  33493  isnumbasgrplem1  37671  wfximgfd  38463  funimaeq  39461  fnfvima2  39478  mgmhmima  41802
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