Theorem setsvalg 13360

Description: Value of the structure replacement function. (Contributed by Mario Carneiro, 30-Apr-2015.)

Assertion

Ref	Expression
setsvalg	|- ( ( S e. V /\ A e. W ) -> ( S sSet A ) = ( ( S |` ( _V \ dom { A } ) ) u. { A } ) )

Proof of Theorem setsvalg

Dummy variables e s are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		elex 2833	. 2 |- ( S e. V -> S e. _V )
2		elex 2833	. 2 |- ( A e. W -> A e. _V )
3		resexg 5098	. . . 4 |- ( S e. _V -> ( S |` ( _V \ dom { A } ) ) e. _V )
4		snexg 4316	. . . 4 |- ( A e. _V -> { A } e. _V )
5		unexg 4584	. . . 4 |- ( ( ( S |` ( _V \ dom { A } ) ) e. _V /\ { A } e. _V ) -> ( ( S |` ( _V \ dom { A } ) ) u. { A } ) e. _V )
6	3, 4, 5	syl2an 289	. . 3 |- ( ( S e. _V /\ A e. _V ) -> ( ( S |` ( _V \ dom { A } ) ) u. { A } ) e. _V )
7		simpl 109	. . . . . 6 |- ( ( s = S /\ e = A ) -> s = S )
8		simpr 110	. . . . . . . . 9 |- ( ( s = S /\ e = A ) -> e = A )
9	8	sneqd 3718	. . . . . . . 8 |- ( ( s = S /\ e = A ) -> { e } = { A } )
10	9	dmeqd 4978	. . . . . . 7 |- ( ( s = S /\ e = A ) -> dom { e } = dom { A } )
11	10	difeq2d 3347	. . . . . 6 |- ( ( s = S /\ e = A ) -> ( _V \ dom { e } ) = ( _V \ dom { A } ) )
12	7, 11	reseq12d 5059	. . . . 5 |- ( ( s = S /\ e = A ) -> ( s |` ( _V \ dom { e } ) ) = ( S |` ( _V \ dom { A } ) ) )
13	12, 9	uneq12d 3384	. . . 4 |- ( ( s = S /\ e = A ) -> ( ( s |` ( _V \ dom { e } ) ) u. { e } ) = ( ( S |` ( _V \ dom { A } ) ) u. { A } ) )
14		df-sets 13337	. . . 4 |- sSet = ( s e. _V , e e. _V |-> ( ( s |` ( _V \ dom { e } ) ) u. { e } ) )
15	13, 14	ovmpoga 6208	. . 3 |- ( ( S e. _V /\ A e. _V /\ ( ( S |` ( _V \ dom { A } ) ) u. { A } ) e. _V ) -> ( S sSet A ) = ( ( S |` ( _V \ dom { A } ) ) u. { A } ) )
16	6, 15	mpd3an3 1379	. 2 |- ( ( S e. _V /\ A e. _V ) -> ( S sSet A ) = ( ( S |` ( _V \ dom { A } ) ) u. { A } ) )
17	1, 2, 16	syl2an 289	1 |- ( ( S e. V /\ A e. W ) -> ( S sSet A ) = ( ( S |` ( _V \ dom { A } ) ) u. { A } ) )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1402   e. wcel 2209   _Vcvv 2821   \ cdif 3217   u. cun 3218   {csn 3705   dom cdm 4769   |` cres 4771  (class class class)co 6075   sSet csts 13328

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 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-sep 4244  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679

This theorem 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-rab 2537  df-v 2823  df-sbc 3052  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-br 4126  df-opab 4188  df-id 4433  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-res 4781  df-iota 5332  df-fun 5374  df-fv 5380  df-ov 6078  df-oprab 6079  df-mpo 6080  df-sets 13337

This theorem is referenced by:  setsvala  13361  setsfun  13365  setsfun0  13366  setsresg  13368  bassetsnn  13387