Theorem grplactfval 13889

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 6086	. . 3 |- ( g = A -> ( g .+ a ) = ( A .+ a ) )
3	2	mpteq2dv 4220	. 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 13394	. . . . 5 |- Base Fn _V
7	5	basmex 13395	. . . . 5 |- ( A e. X -> G e. _V )
8		funfvex 5710	. . . . . 6 |- ( ( Fun Base /\ G e. dom Base ) -> ( Base ` G ) e. _V )
9	8	funfni 5481	. . . . 5 |- ( ( Base Fn _V /\ G e. _V ) -> ( Base ` G ) e. _V )
10	6, 7, 9	sylancr 418	. . . 4 |- ( A e. X -> ( Base ` G ) e. _V )
11	5, 10	eqeltrid 2325	. . 3 |- ( A e. X -> X e. _V )
12	11	mptexd 5938	. 2 |- ( A e. X -> ( a e. X |-> ( A .+ a ) ) e. _V )
13	1, 3, 4, 12	fvmptd3 5796	1 |- ( A e. X -> ( F ` A ) = ( a e. X |-> ( A .+ a ) ) )

Syntax hints:   -> wi 4   = wceq 1402   e. wcel 2209   _Vcvv 2821   |-> cmpt 4190   Fn wfn 5370   ` cfv 5375  (class class class)co 6079   Basecbs 13335

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 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-coll 4244  ax-sep 4247  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-cnex 8264  ax-resscn 8265  ax-1re 8267  ax-addrcl 8270

This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  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-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-int 3969  df-iun 4012  df-br 4129  df-opab 4191  df-mpt 4192  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-ima 4785  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-f1 5380  df-fo 5381  df-f1o 5382  df-fv 5383  df-ov 6082  df-inn 9288  df-ndx 13338  df-slot 13339  df-base 13341

This theorem is referenced by:  grplactcnv  13890  eqglact  14011  eqgen  14013