Theorem nn0supp 9552

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

Step	Hyp	Ref	Expression
1		dfn2 9509	. . . 4 |- NN = ( NN0 \ { 0 } )
2		invdif 3463	. . . 4 |- ( NN0 i^i ( _V \ { 0 } ) ) = ( NN0 \ { 0 } )
3	1, 2	eqtr4i 2256	. . 3 |- NN = ( NN0 i^i ( _V \ { 0 } ) )
4	3	imaeq2i 5099	. 2 |- ( `' F " NN ) = ( `' F " ( NN0 i^i ( _V \ { 0 } ) ) )
5		ffun 5511	. . . 4 |- ( F : I --> NN0 -> Fun F )
6		inpreima 5803	. . . 4 |- ( Fun F -> ( `' F " ( NN0 i^i ( _V \ { 0 } ) ) ) = ( ( `' F " NN0 ) i^i ( `' F " ( _V \ { 0 } ) ) ) )
7	5, 6	syl 14	. . 3 |- ( F : I --> NN0 -> ( `' F " ( NN0 i^i ( _V \ { 0 } ) ) ) = ( ( `' F " NN0 ) i^i ( `' F " ( _V \ { 0 } ) ) ) )
8		cnvimass 5125	. . . . 5 |- ( `' F " ( _V \ { 0 } ) ) C_ dom F
9		fdm 5514	. . . . . 6 |- ( F : I --> NN0 -> dom F = I )
10		fimacnv 5806	. . . . . 6 |- ( F : I --> NN0 -> ( `' F " NN0 ) = I )
11	9, 10	eqtr4d 2268	. . . . 5 |- ( F : I --> NN0 -> dom F = ( `' F " NN0 ) )
12	8, 11	sseqtrid 3288	. . . 4 |- ( F : I --> NN0 -> ( `' F " ( _V \ { 0 } ) ) C_ ( `' F " NN0 ) )
13		sseqin2 3440	. . . 4 |- ( ( `' F " ( _V \ { 0 } ) ) C_ ( `' F " NN0 ) <-> ( ( `' F " NN0 ) i^i ( `' F " ( _V \ { 0 } ) ) ) = ( `' F " ( _V \ { 0 } ) ) )
14	12, 13	sylib 122	. . 3 |- ( F : I --> NN0 -> ( ( `' F " NN0 ) i^i ( `' F " ( _V \ { 0 } ) ) ) = ( `' F " ( _V \ { 0 } ) ) )
15	7, 14	eqtrd 2265	. 2 |- ( F : I --> NN0 -> ( `' F " ( NN0 i^i ( _V \ { 0 } ) ) ) = ( `' F " ( _V \ { 0 } ) ) )
16	4, 15	eqtr2id 2278	1 |- ( F : I --> NN0 -> ( `' F " ( _V \ { 0 } ) ) = ( `' F " NN ) )

Syntax hints:   -> wi 4   = wceq 1398   _Vcvv 2813   \ cdif 3208   i^i cin 3210   C_ wss 3211   {csn 3689   `'ccnv 4748   dom cdm 4749   "cima 4752   Fun wfun 5346   -->wf 5348   0cc0 8127   NNcn 9237   NN0cn0 9496

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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2205  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-cnex 8218  ax-resscn 8219  ax-1re 8221  ax-addrcl 8224  ax-0lt1 8233  ax-0id 8235  ax-rnegex 8236  ax-pre-ltirr 8239  ax-pre-lttrn 8241  ax-pre-ltadd 8243

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-sbc 3043  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-br 4110  df-opab 4172  df-id 4414  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-fv 5360  df-ov 6053  df-pnf 8310  df-mnf 8311  df-xr 8312  df-ltxr 8313  df-le 8314  df-inn 9238  df-n0 9497

This theorem is referenced by: (None)