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Theorem fvmpt4d 45628
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 6950 . 2 ((𝑥𝐴𝐵𝐶) → ((𝑥𝐴𝐵)‘𝑥) = 𝐵)
51, 2, 4syl2anc 585 1 (𝜑 → ((𝑥𝐴𝐵)‘𝑥) = 𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1542  wcel 2114  wnfc 2884  cmpt 5181  cfv 6500
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5243  ax-pr 5379
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ral 3053  df-rex 3063  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-mpt 5182  df-id 5527  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-iota 6456  df-fun 6502  df-fv 6508
This theorem is referenced by: (None)
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