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Theorem fvmptelcdmf 45264
Description: The value of a function at a point of its domain belongs to its codomain. (Contributed by Glauco Siliprandi, 5-Jan-2025.)
Hypotheses
Ref Expression
fvmptelcdmf.a 𝑥𝐴
fvmptelcdmf.c 𝑥𝐶
fvmptelcdmf.f (𝜑 → (𝑥𝐴𝐵):𝐴𝐶)
Assertion
Ref Expression
fvmptelcdmf ((𝜑𝑥𝐴) → 𝐵𝐶)

Proof of Theorem fvmptelcdmf
StepHypRef Expression
1 fvmptelcdmf.f . . 3 (𝜑 → (𝑥𝐴𝐵):𝐴𝐶)
2 fvmptelcdmf.a . . . 4 𝑥𝐴
3 fvmptelcdmf.c . . . 4 𝑥𝐶
4 eqid 2729 . . . 4 (𝑥𝐴𝐵) = (𝑥𝐴𝐵)
52, 3, 4fmptff 45263 . . 3 (∀𝑥𝐴 𝐵𝐶 ↔ (𝑥𝐴𝐵):𝐴𝐶)
61, 5sylibr 234 . 2 (𝜑 → ∀𝑥𝐴 𝐵𝐶)
76r19.21bi 3229 1 ((𝜑𝑥𝐴) → 𝐵𝐶)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  wcel 2109  wnfc 2876  wral 3044  cmpt 5188  wf 6507
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-sep 5251  ax-nul 5261  ax-pr 5387
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ral 3045  df-rex 3054  df-rab 3406  df-v 3449  df-sbc 3754  df-csb 3863  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-sn 4590  df-pr 4592  df-op 4596  df-br 5108  df-opab 5170  df-mpt 5189  df-id 5533  df-xp 5644  df-rel 5645  df-cnv 5646  df-co 5647  df-dm 5648  df-rn 5649  df-res 5650  df-ima 5651  df-fun 6513  df-fn 6514  df-f 6515
This theorem is referenced by:  smfdivdmmbl  46836
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