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Theorem fvmpt4d 45727
Description: Value of a function given by the maps-to notation. (Contributed by Glauco Siliprandi, 15-Feb-2025.)
Hypotheses
Ref Expression
fvmpt4d.1 𝑥𝐴
fvmpt4d.2 (𝜑𝐵𝐶)
fvmpt4d.3 (𝜑𝑥𝐴)
Assertion
Ref Expression
fvmpt4d (𝜑 → ((𝑥𝐴𝐵)‘𝑥) = 𝐵)

Proof of Theorem fvmpt4d
StepHypRef Expression
1 fvmpt4d.3 . 2 (𝜑𝑥𝐴)
2 fvmpt4d.2 . 2 (𝜑𝐵𝐶)
3 fvmpt4d.1 . . 3 𝑥𝐴
43fvmpt2f 6943 . 2 ((𝑥𝐴𝐵𝐶) → ((𝑥𝐴𝐵)‘𝑥) = 𝐵)
51, 2, 4syl2anc 590 1 (𝜑 → ((𝑥𝐴𝐵)‘𝑥) = 𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1547  wcel 2119  wnfc 2887  cmpt 5160  cfv 6492
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2712  ax-sep 5225  ax-pr 5369
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2719  df-cleq 2732  df-clel 2815  df-nfc 2889  df-ral 3055  df-rex 3065  df-rab 3393  df-v 3434  df-sbc 3731  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4269  df-if 4462  df-sn 4563  df-pr 4565  df-op 4569  df-uni 4846  df-br 5080  df-opab 5142  df-mpt 5161  df-id 5520  df-xp 5631  df-rel 5632  df-cnv 5633  df-co 5634  df-dm 5635  df-iota 6448  df-fun 6494  df-fv 6500
This theorem is referenced by: (None)
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