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Theorem fsuppfund 7294
Description: A finitely supported function is a function. (Contributed by SN, 8-Mar-2025.)
Hypothesis
Ref Expression
fsuppfund.1 (𝜑𝐹 finSupp 𝑍)
Assertion
Ref Expression
fsuppfund (𝜑 → Fun 𝐹)

Proof of Theorem fsuppfund
StepHypRef Expression
1 fsuppfund.1 . 2 (𝜑𝐹 finSupp 𝑍)
2 fsuppimp 7292 . . 3 (𝐹 finSupp 𝑍 → (Fun 𝐹 ∧ (𝐹 supp 𝑍) ∈ Fin))
32simpld 112 . 2 (𝐹 finSupp 𝑍 → Fun 𝐹)
41, 3syl 14 1 (𝜑 → Fun 𝐹)
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4  wcel 2209   class class class wbr 4130  Fun wfun 5371  (class class class)co 6085   supp csupp 6475  Fincfn 7022   finSupp cfsupp 7285
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-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-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-iota 5337  df-fun 5379  df-fv 5385  df-ov 6088  df-fsupp 7286
This theorem is used by:  fsuppcorn  7301
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