Users' Mathboxes Mathbox for Glauco Siliprandi < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  fvmptelcdmf Structured version   Visualization version   GIF version

Theorem fvmptelcdmf 45845
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 2762 . . . 4 (𝑥𝐴𝐵) = (𝑥𝐴𝐵)
52, 3, 4fmptff 45844 . . 3 (∀𝑥𝐴 𝐵𝐶 ↔ (𝑥𝐴𝐵):𝐴𝐶)
61, 5sylibr 236 . 2 (𝜑 → ∀𝑥𝐴 𝐵𝐶)
76r19.21bi 3254 1 ((𝜑𝑥𝐴) → 𝐵𝐶)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 399  wcel 2142  wnfc 2909  wral 3076  cmpt 5181  wf 6517
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1815  ax-4 1829  ax-5 1930  ax-6 1987  ax-7 2028  ax-8 2144  ax-9 2152  ax-10 2175  ax-11 2191  ax-12 2212  ax-ext 2734  ax-sep 5246  ax-pr 5390
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1100  df-tru 1563  df-fal 1573  df-ex 1800  df-nf 1804  df-sb 2091  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ral 3077  df-rex 3087  df-rab 3415  df-v 3456  df-sbc 3745  df-csb 3853  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4481  df-sn 4583  df-pr 4585  df-op 4589  df-br 5101  df-opab 5163  df-mpt 5182  df-id 5542  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-fun 6523  df-fn 6524  df-f 6525
This theorem is referenced by:  smfdivdmmbl  47412
  Copyright terms: Public domain W3C validator