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Theorem fvmpt 5594
Description: Value of a function given in maps-to notation. (Contributed by NM, 17-Aug-2011.)
Hypotheses
Ref Expression
fvmptg.1 (𝑥 = 𝐴𝐵 = 𝐶)
fvmptg.2 𝐹 = (𝑥𝐷𝐵)
fvmpt.3 𝐶 ∈ V
Assertion
Ref Expression
fvmpt (𝐴𝐷 → (𝐹𝐴) = 𝐶)
Distinct variable groups:   𝑥,𝐴   𝑥,𝐶   𝑥,𝐷
Allowed substitution hints:   𝐵(𝑥)   𝐹(𝑥)

Proof of Theorem fvmpt
StepHypRef Expression
1 fvmpt.3 . 2 𝐶 ∈ V
2 fvmptg.1 . . 3 (𝑥 = 𝐴𝐵 = 𝐶)
3 fvmptg.2 . . 3 𝐹 = (𝑥𝐷𝐵)
42, 3fvmptg 5593 . 2 ((𝐴𝐷𝐶 ∈ V) → (𝐹𝐴) = 𝐶)
51, 4mpan2 425 1 (𝐴𝐷 → (𝐹𝐴) = 𝐶)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1353  wcel 2148  Vcvv 2738  cmpt 4065  cfv 5217
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-14 2151  ax-ext 2159  ax-sep 4122  ax-pow 4175  ax-pr 4210
This theorem depends on definitions:  df-bi 117  df-3an 980  df-tru 1356  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ral 2460  df-rex 2461  df-v 2740  df-sbc 2964  df-un 3134  df-in 3136  df-ss 3143  df-pw 3578  df-sn 3599  df-pr 3600  df-op 3602  df-uni 3811  df-br 4005  df-opab 4066  df-mpt 4067  df-id 4294  df-xp 4633  df-rel 4634  df-cnv 4635  df-co 4636  df-dm 4637  df-iota 5179  df-fun 5219  df-fv 5225
This theorem is referenced by:  reldm  6187  rdg0  6388  oacl  6461  fvmptmap  6685  xpcomco  6826  infnninf  7122  uzval  9530  sqrtrval  11009  fsumcnv  11445  fprodcnv  11633  ege2le3  11679  qnumval  12185  qdenval  12186  odzval  12241  pcmpt  12341  1arithlem1  12361  peano4nninf  14758  peano3nninf  14759  nninfsellemeq  14766
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