Theorem fvmptelcdm 7145

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 2763	. . . 4 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵)
3	2	fmpt 7142	. . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝐶 ↔ (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶)
4	1, 3	sylibr 237	. 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝐶)
5	4	r19.21bi 3258	1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶)

This proof depends on syntax axioms:   → wi 4   ∧ wa 401   ∈ wcel 2147  ∀wral 3080   ↦ cmpt 5192  ⟶wf 6562

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-sep 5255  ax-pr 5398

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4841  df-br 5109  df-opab 5174  df-mpt 5193  df-id 5553  df-xp 5664  df-rel 5665  df-cnv 5666  df-co 5667  df-dm 5668  df-rn 5669  df-res 5670  df-ima 5671  df-fun 6568  df-fn 6569  df-f 6570

This theorem is used by:  rlimmptrcl  15819  lo1mptrcl  15833  o1mptrcl  15834  frlmgsum  22133  uvcresum  22154  psrass1lem  22296  txcnp  23994  ptcnp  23996  ptcn  24001  cnmpt11  24037  cnmpt1t  24039  cnmpt12  24041  cnmptkp  24054  cnmptk1  24055  cnmptkk  24057  cnmptk1p  24059  cnmptk2  24060  cnmpt1plusg  24461  cnmpt1vsca  24568  cnmpt1ds  25217  cncfcompt2  25284  cncfmpt2ss  25292  cnmpt1ip  25623  divcncf  25823  mbfmptcl  26012  i1fposd  26083  itgss3  26190  dvmptcl  26334  dvmptco  26347  dvle  26382  dvfsumle  26396  dvfsumge  26397  dvmptrecl  26399  itgparts  26422  itgsubstlem  26423  itgsubst  26424  ulmss  26781  ulmdvlem2  26785  itgulm2  26793  logtayl  27045  intlewftc  43377  cncfcompt  47166  cncficcgt0  47171  itgsubsticclem  47258  sge0iunmptlemre  47698  hoicvrrex  47839  smfadd  48048  smfpimioompt  48069