Theorem fvmptelcdm 7109

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 2769	. . . 4 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵)
3	2	fmpt 7106	. . 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 3263	1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶)

Syntax hints:   → wi 4   ∧ wa 400   ∈ wcel 2149  ∀wral 3085   ↦ cmpt 5196  ⟶wf 6533

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-sep 5261  ax-pr 5405

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-br 5114  df-opab 5178  df-mpt 5197  df-id 5557  df-xp 5668  df-rel 5669  df-cnv 5670  df-co 5671  df-dm 5672  df-rn 5673  df-res 5674  df-ima 5675  df-fun 6539  df-fn 6540  df-f 6541

This theorem is referenced by:  rlimmptrcl  15658  lo1mptrcl  15672  o1mptrcl  15673  frlmgsum  21890  uvcresum  21911  psrass1lem  22051  txcnp  23745  ptcnp  23747  ptcn  23752  cnmpt11  23788  cnmpt1t  23790  cnmpt12  23792  cnmptkp  23805  cnmptk1  23806  cnmptkk  23808  cnmptk1p  23810  cnmptk2  23811  cnmpt1plusg  24212  cnmpt1vsca  24319  cnmpt1ds  24968  cncfcompt2  25035  cncfmpt2ss  25043  cnmpt1ip  25374  divcncf  25574  mbfmptcl  25763  i1fposd  25834  itgss3  25942  dvmptcl  26086  dvmptco  26099  dvle  26134  dvfsumle  26148  dvfsumge  26149  dvmptrecl  26151  itgparts  26174  itgsubstlem  26175  itgsubst  26176  ulmss  26525  ulmdvlem2  26529  itgulm2  26537  logtayl  26790  intlewftc  42717  cncfcompt  46488  cncficcgt0  46493  itgsubsticclem  46580  sge0iunmptlemre  47020  hoicvrrex  47161  smfadd  47370  smfpimioompt  47391