ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  fv2prc Unicode version

Theorem fv2prc 5626
Description: A function value of a function value at a proper class is the empty set. (Contributed by AV, 8-Apr-2021.)
Assertion
Ref Expression
fv2prc  |-  ( -.  A  e.  _V  ->  ( ( F `  A
) `  B )  =  (/) )

Proof of Theorem fv2prc
StepHypRef Expression
1 fvprc 5583 . . 3  |-  ( -.  A  e.  _V  ->  ( F `  A )  =  (/) )
21fveq1d 5591 . 2  |-  ( -.  A  e.  _V  ->  ( ( F `  A
) `  B )  =  ( (/) `  B
) )
3 0fv 5625 . 2  |-  ( (/) `  B )  =  (/)
42, 3eqtrdi 2255 1  |-  ( -.  A  e.  _V  ->  ( ( F `  A
) `  B )  =  (/) )
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    = wceq 1373    e. wcel 2177   _Vcvv 2773   (/)c0 3464   ` cfv 5280
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-14 2180  ax-ext 2188  ax-sep 4170  ax-pow 4226  ax-setind 4593
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 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-ne 2378  df-ral 2490  df-rex 2491  df-v 2775  df-dif 3172  df-un 3174  df-in 3176  df-ss 3183  df-nul 3465  df-pw 3623  df-sn 3644  df-pr 3645  df-op 3647  df-uni 3857  df-br 4052  df-iota 5241  df-fv 5288
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator