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Theorem mapval 6770
Description: The value of set exponentiation (inference version). 
( A  ^m  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  e. 
_V
mapval.2  |-  B  e. 
_V
Assertion
Ref Expression
mapval  |-  ( A  ^m  B )  =  { f  |  f : B --> A }
Distinct variable groups:    A, f    B, f

Proof of Theorem mapval
StepHypRef Expression
1 mapval.1 . 2  |-  A  e. 
_V
2 mapval.2 . 2  |-  B  e. 
_V
3 mapvalg 6768 . 2  |-  ( ( A  e.  _V  /\  B  e.  _V )  ->  ( A  ^m  B
)  =  { f  |  f : B --> A } )
41, 2, 3mp2an 426 1  |-  ( A  ^m  B )  =  { f  |  f : B --> A }
Colors of variables: wff set class
Syntax hints:    = wceq 1373    e. wcel 2178   {cab 2193   _Vcvv 2776   -->wf 5286  (class class class)co 5967    ^m cmap 6758
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 615  ax-in2 616  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-13 2180  ax-14 2181  ax-ext 2189  ax-sep 4178  ax-pow 4234  ax-pr 4269  ax-un 4498  ax-setind 4603
This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2194  df-cleq 2200  df-clel 2203  df-nfc 2339  df-ne 2379  df-ral 2491  df-rex 2492  df-v 2778  df-sbc 3006  df-dif 3176  df-un 3178  df-in 3180  df-ss 3187  df-pw 3628  df-sn 3649  df-pr 3650  df-op 3652  df-uni 3865  df-br 4060  df-opab 4122  df-id 4358  df-xp 4699  df-rel 4700  df-cnv 4701  df-co 4702  df-dm 4703  df-rn 4704  df-iota 5251  df-fun 5292  df-fn 5293  df-f 5294  df-fv 5298  df-ov 5970  df-oprab 5971  df-mpo 5972  df-map 6760
This theorem is referenced by:  exmidpw2en  7035  nninfex  7249  psrval  14543
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