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Theorem fvmpt4d 46209
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 6982 . 2 ((𝑥𝐴𝐵𝐶) → ((𝑥𝐴𝐵)‘𝑥) = 𝐵)
51, 2, 4syl2anc 596 1 (𝜑 → ((𝑥𝐴𝐵)‘𝑥) = 𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4   = wceq 1570  wcel 2145  wnfc 2907  cmpt 5185  cfv 6527
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 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2732  ax-sep 5248  ax-pr 5390
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 2100  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-nul 4279  df-if 4482  df-sn 4584  df-pr 4586  df-op 4590  df-uni 4867  df-br 5103  df-opab 5167  df-mpt 5186  df-id 5542  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-iota 6483  df-fun 6529  df-fv 6535
This theorem is used by: (None)
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