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Theorem elmapfun 8430
Description: A mapping is always a function. (Contributed by Stefan O'Rear, 9-Oct-2014.) (Revised by Stefan O'Rear, 5-May-2015.)
Assertion
Ref Expression
elmapfun (𝐴 ∈ (𝐵m 𝐶) → Fun 𝐴)

Proof of Theorem elmapfun
StepHypRef Expression
1 elmapi 8428 . 2 (𝐴 ∈ (𝐵m 𝐶) → 𝐴:𝐶𝐵)
21ffund 6518 1 (𝐴 ∈ (𝐵m 𝐶) → Fun 𝐴)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2114  Fun wfun 6349  (class class class)co 7156  m cmap 8406
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-iun 4921  df-br 5067  df-opab 5129  df-mpt 5147  df-id 5460  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-fv 6363  df-ov 7159  df-oprab 7160  df-mpo 7161  df-1st 7689  df-2nd 7690  df-map 8408
This theorem is referenced by:  fsfnn0gsumfsffz  19103  ltbwe  20253  frlmbas  20899  islindf4  20982  mbfmfun  31512  eulerpartgbij  31630  uncf  34886  pwfi2f1o  39745  hoicvr  42879  ovnovollem1  42987  ovnovollem2  42988  domnmsuppn0  44466  rmsuppss  44467  mndpsuppss  44468  scmsuppss  44469  lincext2  44559
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