Theorem nn0supp 9453

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 9414	. . . 4 |- NN = ( NN0 \ { 0 } )
2		invdif 3449	. . . 4 |- ( NN0 i^i ( _V \ { 0 } ) ) = ( NN0 \ { 0 } )
3	1, 2	eqtr4i 2255	. . 3 |- NN = ( NN0 i^i ( _V \ { 0 } ) )
4	3	imaeq2i 5074	. 2 |- ( `' F " NN ) = ( `' F " ( NN0 i^i ( _V \ { 0 } ) ) )
5		ffun 5485	. . . 4 |- ( F : I --> NN0 -> Fun F )
6		inpreima 5773	. . . 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 5099	. . . . 5 |- ( `' F " ( _V \ { 0 } ) ) C_ dom F
9		fdm 5488	. . . . . 6 |- ( F : I --> NN0 -> dom F = I )
10		fimacnv 5776	. . . . . 6 |- ( F : I --> NN0 -> ( `' F " NN0 ) = I )
11	9, 10	eqtr4d 2267	. . . . 5 |- ( F : I --> NN0 -> dom F = ( `' F " NN0 ) )
12	8, 11	sseqtrid 3277	. . . 4 |- ( F : I --> NN0 -> ( `' F " ( _V \ { 0 } ) ) C_ ( `' F " NN0 ) )
13		sseqin2 3426	. . . 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 2264	. 2 |- ( F : I --> NN0 -> ( `' F " ( NN0 i^i ( _V \ { 0 } ) ) ) = ( `' F " ( _V \ { 0 } ) ) )
16	4, 15	eqtr2id 2277	1 |- ( F : I --> NN0 -> ( `' F " ( _V \ { 0 } ) ) = ( `' F " NN ) )

Syntax hints:   -> wi 4   = wceq 1397   _Vcvv 2802   \ cdif 3197   i^i cin 3199   C_ wss 3200   {csn 3669   `'ccnv 4724   dom cdm 4725   "cima 4728   Fun wfun 5320   -->wf 5322   0cc0 8031   NNcn 9142   NN0cn0 9401

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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8122  ax-resscn 8123  ax-1re 8125  ax-addrcl 8128  ax-0lt1 8137  ax-0id 8139  ax-rnegex 8140  ax-pre-ltirr 8143  ax-pre-lttrn 8145  ax-pre-ltadd 8147

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-sbc 3032  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-br 4089  df-opab 4151  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-fv 5334  df-ov 6020  df-pnf 8215  df-mnf 8216  df-xr 8217  df-ltxr 8218  df-le 8219  df-inn 9143  df-n0 9402

This theorem is referenced by: (None)