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Theorem nn0supp 9162
Description: Two ways to write the support of a function on  NN0. (Contributed by Mario Carneiro, 29-Dec-2014.)
Assertion
Ref Expression
nn0supp  |-  ( F : I --> NN0  ->  ( `' F " ( _V 
\  { 0 } ) )  =  ( `' F " NN ) )

Proof of Theorem nn0supp
StepHypRef Expression
1 dfn2 9123 . . . 4  |-  NN  =  ( NN0  \  { 0 } )
2 invdif 3363 . . . 4  |-  ( NN0 
i^i  ( _V  \  { 0 } ) )  =  ( NN0  \  { 0 } )
31, 2eqtr4i 2189 . . 3  |-  NN  =  ( NN0  i^i  ( _V 
\  { 0 } ) )
43imaeq2i 4943 . 2  |-  ( `' F " NN )  =  ( `' F " ( NN0  i^i  ( _V  \  { 0 } ) ) )
5 ffun 5339 . . . 4  |-  ( F : I --> NN0  ->  Fun 
F )
6 inpreima 5610 . . . 4  |-  ( Fun 
F  ->  ( `' F " ( NN0  i^i  ( _V  \  { 0 } ) ) )  =  ( ( `' F " NN0 )  i^i  ( `' F "
( _V  \  {
0 } ) ) ) )
75, 6syl 14 . . 3  |-  ( F : I --> NN0  ->  ( `' F " ( NN0 
i^i  ( _V  \  { 0 } ) ) )  =  ( ( `' F " NN0 )  i^i  ( `' F " ( _V 
\  { 0 } ) ) ) )
8 cnvimass 4966 . . . . 5  |-  ( `' F " ( _V 
\  { 0 } ) )  C_  dom  F
9 fdm 5342 . . . . . 6  |-  ( F : I --> NN0  ->  dom 
F  =  I )
10 fimacnv 5613 . . . . . 6  |-  ( F : I --> NN0  ->  ( `' F " NN0 )  =  I )
119, 10eqtr4d 2201 . . . . 5  |-  ( F : I --> NN0  ->  dom 
F  =  ( `' F " NN0 )
)
128, 11sseqtrid 3191 . . . 4  |-  ( F : I --> NN0  ->  ( `' F " ( _V 
\  { 0 } ) )  C_  ( `' F " NN0 )
)
13 sseqin2 3340 . . . 4  |-  ( ( `' F " ( _V 
\  { 0 } ) )  C_  ( `' F " NN0 )  <->  ( ( `' F " NN0 )  i^i  ( `' F " ( _V 
\  { 0 } ) ) )  =  ( `' F "
( _V  \  {
0 } ) ) )
1412, 13sylib 121 . . 3  |-  ( F : I --> NN0  ->  ( ( `' F " NN0 )  i^i  ( `' F " ( _V 
\  { 0 } ) ) )  =  ( `' F "
( _V  \  {
0 } ) ) )
157, 14eqtrd 2198 . 2  |-  ( F : I --> NN0  ->  ( `' F " ( NN0 
i^i  ( _V  \  { 0 } ) ) )  =  ( `' F " ( _V 
\  { 0 } ) ) )
164, 15eqtr2id 2211 1  |-  ( F : I --> NN0  ->  ( `' F " ( _V 
\  { 0 } ) )  =  ( `' F " NN ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1343   _Vcvv 2725    \ cdif 3112    i^i cin 3114    C_ wss 3115   {csn 3575   `'ccnv 4602   dom cdm 4603   "cima 4606   Fun wfun 5181   -->wf 5183   0cc0 7749   NNcn 8853   NN0cn0 9110
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-sep 4099  ax-pow 4152  ax-pr 4186  ax-un 4410  ax-setind 4513  ax-cnex 7840  ax-resscn 7841  ax-1re 7843  ax-addrcl 7846  ax-0lt1 7855  ax-0id 7857  ax-rnegex 7858  ax-pre-ltirr 7861  ax-pre-lttrn 7863  ax-pre-ltadd 7865
This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2296  df-ne 2336  df-nel 2431  df-ral 2448  df-rex 2449  df-rab 2452  df-v 2727  df-sbc 2951  df-dif 3117  df-un 3119  df-in 3121  df-ss 3128  df-nul 3409  df-pw 3560  df-sn 3581  df-pr 3582  df-op 3584  df-uni 3789  df-int 3824  df-br 3982  df-opab 4043  df-id 4270  df-xp 4609  df-rel 4610  df-cnv 4611  df-co 4612  df-dm 4613  df-rn 4614  df-res 4615  df-ima 4616  df-iota 5152  df-fun 5189  df-fn 5190  df-f 5191  df-fv 5195  df-ov 5844  df-pnf 7931  df-mnf 7932  df-xr 7933  df-ltxr 7934  df-le 7935  df-inn 8854  df-n0 9111
This theorem is referenced by: (None)
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