Theorem fvmptelcdm 7056

Description: The value of a function at a point of its domain belongs to its codomain. (Contributed by Glauco Siliprandi, 26-Jun-2021.)

Hypothesis

Ref	Expression
fvmptelcdm.1	⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶)

Assertion

Ref	Expression
fvmptelcdm	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶)

Distinct variable groups:   𝑥,𝐴   𝑥,𝐶

Allowed substitution hints:   𝜑(𝑥)   𝐵(𝑥)

Proof of Theorem fvmptelcdm

Step	Hyp	Ref	Expression
1		fvmptelcdm.1	. . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶)
2		eqid 2734	. . . 4 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵)
3	2	fmpt 7053	. . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝐶 ↔ (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶)
4	1, 3	sylibr 234	. 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝐶)
5	4	r19.21bi 3226	1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶)

Syntax hints:   → wi 4   ∧ wa 395   ∈ wcel 2113  ∀wral 3049   ↦ cmpt 5177  ⟶wf 6486

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 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2706  ax-sep 5239  ax-nul 5249  ax-pr 5375

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2537  df-eu 2567  df-clab 2713  df-cleq 2726  df-clel 2809  df-nfc 2883  df-ral 3050  df-rex 3059  df-rab 3398  df-v 3440  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4284  df-if 4478  df-sn 4579  df-pr 4581  df-op 4585  df-br 5097  df-opab 5159  df-mpt 5178  df-id 5517  df-xp 5628  df-rel 5629  df-cnv 5630  df-co 5631  df-dm 5632  df-rn 5633  df-res 5634  df-ima 5635  df-fun 6492  df-fn 6493  df-f 6494

This theorem is referenced by:  rlimmptrcl  15529  lo1mptrcl  15543  o1mptrcl  15544  frlmgsum  21725  uvcresum  21746  psrass1lem  21886  txcnp  23562  ptcnp  23564  ptcn  23569  cnmpt11  23605  cnmpt1t  23607  cnmpt12  23609  cnmptkp  23622  cnmptk1  23623  cnmptkk  23625  cnmptk1p  23627  cnmptk2  23628  cnmpt1plusg  24029  cnmpt1vsca  24136  cnmpt1ds  24785  cncfcompt2  24855  cncfmpt2ss  24863  cnmpt1ip  25201  divcncf  25402  mbfmptcl  25591  i1fposd  25662  itgss3  25770  dvmptcl  25917  dvmptco  25930  dvle  25966  dvfsumle  25980  dvfsumleOLD  25981  dvfsumge  25982  dvmptrecl  25984  itgparts  26008  itgsubstlem  26009  itgsubst  26010  ulmss  26360  ulmdvlem2  26364  itgulm2  26372  logtayl  26623  intlewftc  42254  cncfcompt  46069  cncficcgt0  46074  itgsubsticclem  46161  sge0iunmptlemre  46601  hoicvrrex  46742  smfadd  46951  smfpimioompt  46972