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Theorem mptsuppdifd 6495
Description: The support of a function in maps-to notation with a class difference. (Contributed by AV, 28-May-2019.)
Hypotheses
Ref Expression
mptsuppdifd.f  |-  F  =  ( x  e.  A  |->  B )
mptsuppdifd.a  |-  ( ph  ->  A  e.  V )
mptsuppdifd.z  |-  ( ph  ->  Z  e.  W )
Assertion
Ref Expression
mptsuppdifd  |-  ( ph  ->  ( F supp  Z )  =  { x  e.  A  |  B  e.  ( _V  \  { Z } ) } )
Distinct variable groups:    x, A    x, Z
Allowed substitution hints:    ph( x)    B( x)    F( x)    V( x)    W( x)

Proof of Theorem mptsuppdifd
StepHypRef Expression
1 mptsuppdifd.f . . . . . 6  |-  F  =  ( x  e.  A  |->  B )
21funmpt2 5416 . . . . 5  |-  Fun  F
32a1i 9 . . . 4  |-  ( ph  ->  Fun  F )
43funfnd 5408 . . 3  |-  ( ph  ->  F  Fn  dom  F
)
5 mptsuppdifd.a . . . . 5  |-  ( ph  ->  A  e.  V )
65mptexd 5944 . . . 4  |-  ( ph  ->  ( x  e.  A  |->  B )  e.  _V )
71, 6eqeltrid 2325 . . 3  |-  ( ph  ->  F  e.  _V )
8 mptsuppdifd.z . . 3  |-  ( ph  ->  Z  e.  W )
9 suppimacnvfn 6486 . . 3  |-  ( ( F  Fn  dom  F  /\  F  e.  _V  /\  Z  e.  W )  ->  ( F supp  Z
)  =  ( `' F " ( _V 
\  { Z }
) ) )
104, 7, 8, 9syl3anc 1278 . 2  |-  ( ph  ->  ( F supp  Z )  =  ( `' F " ( _V  \  { Z } ) ) )
111mptpreima 5281 . 2  |-  ( `' F " ( _V 
\  { Z }
) )  =  {
x  e.  A  |  B  e.  ( _V  \  { Z } ) }
1210, 11eqtrdi 2287 1  |-  ( ph  ->  ( F supp  Z )  =  { x  e.  A  |  B  e.  ( _V  \  { Z } ) } )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    = wceq 1402    e. wcel 2209   {crab 2532   _Vcvv 2821    \ cdif 3217   {csn 3709    |-> cmpt 4192   `'ccnv 4773   dom cdm 4774   "cima 4777   Fun wfun 5371    Fn wfn 5372  (class class class)co 6085   supp csupp 6475
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-coll 4246  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-iun 4014  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fn 5380  df-f 5381  df-f1 5382  df-fo 5383  df-f1o 5384  df-fv 5385  df-ov 6088  df-oprab 6089  df-mpo 6090  df-supp 6476
This theorem is used by:  mptsuppd  6496  suppssfvg  6503
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