Theorem grplactfval 13620

Description: The left group action of element A of group G. (Contributed by Paul Chapman, 18-Mar-2008.)

Hypotheses

Ref	Expression
grplact.1	|- F = ( g e. X |-> ( a e. X |-> ( g .+ a ) ) )
grplact.2	|- X = ( Base ` G )

Assertion

Ref	Expression
grplactfval	|- ( A e. X -> ( F ` A ) = ( a e. X |-> ( A .+ a ) ) )

Distinct variable groups:   g, a, A   G, a, g   .+ , a, g   X, a, g

Allowed substitution hints:   F( g, a)

Proof of Theorem grplactfval

Step	Hyp	Ref	Expression
1		grplact.1	. 2 |- F = ( g e. X |-> ( a e. X |-> ( g .+ a ) ) )
2		oveq1 6001	. . 3 |- ( g = A -> ( g .+ a ) = ( A .+ a ) )
3	2	mpteq2dv 4174	. 2 |- ( g = A -> ( a e. X |-> ( g .+ a ) ) = ( a e. X |-> ( A .+ a ) ) )
4		id 19	. 2 |- ( A e. X -> A e. X )
5		grplact.2	. . . 4 |- X = ( Base ` G )
6		basfn 13077	. . . . 5 |- Base Fn _V
7	5	basmex 13078	. . . . 5 |- ( A e. X -> G e. _V )
8		funfvex 5640	. . . . . 6 |- ( ( Fun Base /\ G e. dom Base ) -> ( Base ` G ) e. _V )
9	8	funfni 5419	. . . . 5 |- ( ( Base Fn _V /\ G e. _V ) -> ( Base ` G ) e. _V )
10	6, 7, 9	sylancr 414	. . . 4 |- ( A e. X -> ( Base ` G ) e. _V )
11	5, 10	eqeltrid 2316	. . 3 |- ( A e. X -> X e. _V )
12	11	mptexd 5859	. 2 |- ( A e. X -> ( a e. X |-> ( A .+ a ) ) e. _V )
13	1, 3, 4, 12	fvmptd3 5721	1 |- ( A e. X -> ( F ` A ) = ( a e. X |-> ( A .+ a ) ) )

Syntax hints:   -> wi 4   = wceq 1395   e. wcel 2200   _Vcvv 2799   |-> cmpt 4144   Fn wfn 5309   ` cfv 5314  (class class class)co 5994   Basecbs 13018

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-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-coll 4198  ax-sep 4201  ax-pow 4257  ax-pr 4292  ax-un 4521  ax-cnex 8078  ax-resscn 8079  ax-1re 8081  ax-addrcl 8084

This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2801  df-sbc 3029  df-csb 3125  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3888  df-int 3923  df-iun 3966  df-br 4083  df-opab 4145  df-mpt 4146  df-id 4381  df-xp 4722  df-rel 4723  df-cnv 4724  df-co 4725  df-dm 4726  df-rn 4727  df-res 4728  df-ima 4729  df-iota 5274  df-fun 5316  df-fn 5317  df-f 5318  df-f1 5319  df-fo 5320  df-f1o 5321  df-fv 5322  df-ov 5997  df-inn 9099  df-ndx 13021  df-slot 13022  df-base 13024

This theorem is referenced by:  grplactcnv  13621  eqglact  13748  eqgen  13750