Theorem qusaddval 12811

Description: The addition in a quotient structure. (Contributed by Mario Carneiro, 24-Feb-2015.)

Hypotheses

Ref	Expression
qusaddf.u	|- ( ph -> U = ( R /.s .~ ) )
qusaddf.v	|- ( ph -> V = ( Base ` R ) )
qusaddf.r	|- ( ph -> .~ Er V )
qusaddf.z	|- ( ph -> R e. Z )
qusaddf.e	|- ( ph -> ( ( a .~ p /\ b .~ q ) -> ( a .x. b ) .~ ( p .x. q ) ) )
qusaddf.c	|- ( ( ph /\ ( p e. V /\ q e. V ) ) -> ( p .x. q ) e. V )
qusaddf.p	|- .x. = ( +g ` R )
qusaddf.a	|- .xb = ( +g ` U )

Assertion

Ref	Expression
qusaddval	|- ( ( ph /\ X e. V /\ Y e. V ) -> ( [ X ] .~ .xb [ Y ] .~ ) = [ ( X .x. Y ) ] .~ )

Distinct variable groups:   a, b, p, q, .~   ph, a, b, p, q   V, a, b, p, q   R, p, q   .x. , p, q   X, p, q   .xb , a, b, p, q   Y, p, q

Allowed substitution hints:   R( a, b)   .x. ( a, b)   U( q, p, a, b)   X( a, b)   Y( a, b)   Z( q, p, a, b)

Proof of Theorem qusaddval

Dummy variable x is distinct from all other variables.

Step	Hyp	Ref	Expression
1		qusaddf.u	. 2 |- ( ph -> U = ( R /.s .~ ) )
2		qusaddf.v	. 2 |- ( ph -> V = ( Base ` R ) )
3		qusaddf.r	. 2 |- ( ph -> .~ Er V )
4		qusaddf.z	. 2 |- ( ph -> R e. Z )
5		qusaddf.e	. 2 |- ( ph -> ( ( a .~ p /\ b .~ q ) -> ( a .x. b ) .~ ( p .x. q ) ) )
6		qusaddf.c	. 2 |- ( ( ph /\ ( p e. V /\ q e. V ) ) -> ( p .x. q ) e. V )
7		eqid 2189	. 2 |- ( x e. V |-> [ x ] .~ ) = ( x e. V |-> [ x ] .~ )
8		basfn 12570	. . . . . . 7 |- Base Fn _V
9	4	elexd 2765	. . . . . . 7 |- ( ph -> R e. _V )
10		funfvex 5551	. . . . . . . 8 |- ( ( Fun Base /\ R e. dom Base ) -> ( Base ` R ) e. _V )
11	10	funfni 5335	. . . . . . 7 |- ( ( Base Fn _V /\ R e. _V ) -> ( Base ` R ) e. _V )
12	8, 9, 11	sylancr 414	. . . . . 6 |- ( ph -> ( Base ` R ) e. _V )
13	2, 12	eqeltrd 2266	. . . . 5 |- ( ph -> V e. _V )
14		erex 6583	. . . . 5 |- ( .~ Er V -> ( V e. _V -> .~ e. _V ) )
15	3, 13, 14	sylc 62	. . . 4 |- ( ph -> .~ e. _V )
16	1, 2, 7, 15, 4	qusval 12800	. . 3 |- ( ph -> U = ( ( x e. V |-> [ x ] .~ ) "s R ) )
17	1, 2, 7, 15, 4	quslem 12801	. . 3 |- ( ph -> ( x e. V |-> [ x ] .~ ) : V -onto-> ( V /. .~ ) )
18		qusaddf.p	. . 3 |- .x. = ( +g ` R )
19		qusaddf.a	. . 3 |- .xb = ( +g ` U )
20	16, 2, 17, 4, 18, 19	imasplusg 12785	. 2 |- ( ph -> .xb = U_ p e. V U_ q e. V { <. <. ( ( x e. V |-> [ x ] .~ ) ` p ) , ( ( x e. V |-> [ x ] .~ ) ` q ) >. , ( ( x e. V |-> [ x ] .~ ) ` ( p .x. q ) ) >. } )
21		plusgslid 12624	. . . . 5 |- ( +g = Slot ( +g ` ndx ) /\ ( +g ` ndx ) e. NN )
22	21	slotex 12539	. . . 4 |- ( R e. Z -> ( +g ` R ) e. _V )
23	4, 22	syl 14	. . 3 |- ( ph -> ( +g ` R ) e. _V )
24	18, 23	eqeltrid 2276	. 2 |- ( ph -> .x. e. _V )
25	1, 2, 3, 4, 5, 6, 7, 20, 24	qusaddvallemg 12809	1 |- ( ( ph /\ X e. V /\ Y e. V ) -> ( [ X ] .~ .xb [ Y ] .~ ) = [ ( X .x. Y ) ] .~ )

Syntax hints:   -> wi 4   /\ wa 104   /\ w3a 980   = wceq 1364   e. wcel 2160   _Vcvv 2752   class class class wbr 4018   |-> cmpt 4079   Fn wfn 5230   ` cfv 5235  (class class class)co 5896   Er wer 6556   [cec 6557   /.cqs 6558   Basecbs 12512   +g cplusg 12589   /._s cqus 12777

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 615  ax-in2 616  ax-io 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-13 2162  ax-14 2163  ax-ext 2171  ax-coll 4133  ax-sep 4136  ax-pow 4192  ax-pr 4227  ax-un 4451  ax-setind 4554  ax-cnex 7932  ax-resscn 7933  ax-1cn 7934  ax-1re 7935  ax-icn 7936  ax-addcl 7937  ax-addrcl 7938  ax-mulcl 7939  ax-addcom 7941  ax-addass 7943  ax-i2m1 7946  ax-0lt1 7947  ax-0id 7949  ax-rnegex 7950  ax-pre-ltirr 7953  ax-pre-ltadd 7957

This theorem depends on definitions:  df-bi 117  df-3or 981  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1472  df-sb 1774  df-eu 2041  df-mo 2042  df-clab 2176  df-cleq 2182  df-clel 2185  df-nfc 2321  df-ne 2361  df-nel 2456  df-ral 2473  df-rex 2474  df-reu 2475  df-rab 2477  df-v 2754  df-sbc 2978  df-csb 3073  df-dif 3146  df-un 3148  df-in 3150  df-ss 3157  df-nul 3438  df-pw 3592  df-sn 3613  df-pr 3614  df-tp 3615  df-op 3616  df-uni 3825  df-int 3860  df-iun 3903  df-br 4019  df-opab 4080  df-mpt 4081  df-id 4311  df-xp 4650  df-rel 4651  df-cnv 4652  df-co 4653  df-dm 4654  df-rn 4655  df-res 4656  df-ima 4657  df-iota 5196  df-fun 5237  df-fn 5238  df-f 5239  df-f1 5240  df-fo 5241  df-f1o 5242  df-fv 5243  df-ov 5899  df-oprab 5900  df-mpo 5901  df-er 6559  df-ec 6561  df-qs 6565  df-pnf 8024  df-mnf 8025  df-ltxr 8027  df-inn 8950  df-2 9008  df-3 9009  df-ndx 12515  df-slot 12516  df-base 12518  df-plusg 12602  df-mulr 12603  df-iimas 12779  df-qus 12780

This theorem is referenced by:  qusadd  13173