ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  fvmpt Unicode version

Theorem fvmpt 5655
Description: Value of a function given in maps-to notation. (Contributed by NM, 17-Aug-2011.)
Hypotheses
Ref Expression
fvmptg.1  |-  ( x  =  A  ->  B  =  C )
fvmptg.2  |-  F  =  ( x  e.  D  |->  B )
fvmpt.3  |-  C  e. 
_V
Assertion
Ref Expression
fvmpt  |-  ( A  e.  D  ->  ( F `  A )  =  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  e. 
_V
2 fvmptg.1 . . 3  |-  ( x  =  A  ->  B  =  C )
3 fvmptg.2 . . 3  |-  F  =  ( x  e.  D  |->  B )
42, 3fvmptg 5654 . 2  |-  ( ( A  e.  D  /\  C  e.  _V )  ->  ( F `  A
)  =  C )
51, 4mpan2 425 1  |-  ( A  e.  D  ->  ( F `  A )  =  C )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1372    e. wcel 2175   _Vcvv 2771    |-> cmpt 4104   ` cfv 5270
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 710  ax-5 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-14 2178  ax-ext 2186  ax-sep 4161  ax-pow 4217  ax-pr 4252
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1375  df-nf 1483  df-sb 1785  df-eu 2056  df-mo 2057  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-ral 2488  df-rex 2489  df-v 2773  df-sbc 2998  df-un 3169  df-in 3171  df-ss 3178  df-pw 3617  df-sn 3638  df-pr 3639  df-op 3641  df-uni 3850  df-br 4044  df-opab 4105  df-mpt 4106  df-id 4339  df-xp 4680  df-rel 4681  df-cnv 4682  df-co 4683  df-dm 4684  df-iota 5231  df-fun 5272  df-fv 5278
This theorem is referenced by:  reldm  6271  rdg0  6472  oacl  6545  fvmptmap  6771  xpcomco  6920  infnninf  7225  uzval  9649  sqrtrval  11282  fsumcnv  11719  fprodcnv  11907  ege2le3  11953  bitsfval  12224  nninfctlemfo  12332  qnumval  12478  qdenval  12479  odzval  12535  pcmpt  12637  1arithlem1  12657  elply2  15178  peano4nninf  15905  peano3nninf  15906  nninfsellemeq  15913
  Copyright terms: Public domain W3C validator