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Theorem mapval 6834
Description: The value of set exponentiation (inference version). (𝐴𝑚 𝐵) is the set of all functions that map from 𝐵 to 𝐴. Definition 10.24 of [Kunen] p. 24. (Contributed by NM, 8-Dec-2003.)
Hypotheses
Ref Expression
mapval.1 𝐴 ∈ V
mapval.2 𝐵 ∈ V
Assertion
Ref Expression
mapval (𝐴𝑚 𝐵) = {𝑓𝑓:𝐵𝐴}
Distinct variable groups:   𝐴,𝑓   𝐵,𝑓

Proof of Theorem mapval
StepHypRef Expression
1 mapval.1 . 2 𝐴 ∈ V
2 mapval.2 . 2 𝐵 ∈ V
3 mapvalg 6832 . 2 ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐴𝑚 𝐵) = {𝑓𝑓:𝐵𝐴})
41, 2, 3mp2an 426 1 (𝐴𝑚 𝐵) = {𝑓𝑓:𝐵𝐴}
Colors of variables: wff set class
Syntax hints:   = wceq 1397  wcel 2201  {cab 2216  Vcvv 2801  wf 5324  (class class class)co 6023  𝑚 cmap 6822
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-in1 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2203  ax-14 2204  ax-ext 2212  ax-sep 4208  ax-pow 4266  ax-pr 4301  ax-un 4532  ax-setind 4637
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1810  df-eu 2081  df-mo 2082  df-clab 2217  df-cleq 2223  df-clel 2226  df-nfc 2362  df-ne 2402  df-ral 2514  df-rex 2515  df-v 2803  df-sbc 3031  df-dif 3201  df-un 3203  df-in 3205  df-ss 3212  df-pw 3655  df-sn 3676  df-pr 3677  df-op 3679  df-uni 3895  df-br 4090  df-opab 4152  df-id 4392  df-xp 4733  df-rel 4734  df-cnv 4735  df-co 4736  df-dm 4737  df-rn 4738  df-iota 5288  df-fun 5330  df-fn 5331  df-f 5332  df-fv 5336  df-ov 6026  df-oprab 6027  df-mpo 6028  df-map 6824
This theorem is referenced by:  exmidpw2en  7109  nninfex  7325  psrval  14704
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