Theorem mplsubgfileminv 14577

Description: Lemma for mplsubgfi 14578. The additive inverse of a polynomial is a polynomial. (Contributed by Jim Kingdon, 26-Nov-2025.)

Hypotheses

Ref	Expression
mplsubg.s	|- S = ( I mPwSer R )
mplsubg.p	|- P = ( I mPoly R )
mplsubg.u	|- U = ( Base ` P )
mplsubg.i	|- ( ph -> I e. Fin )
mplsubg.r	|- ( ph -> R e. Grp )
mplsubgfileminv.x	|- ( ph -> X e. U )
mplsubgfileminv.inv	|- N = ( invg ` S )

Assertion

Ref	Expression
mplsubgfileminv	|- ( ph -> ( N ` X ) e. U )

Proof of Theorem mplsubgfileminv

Dummy variables a b k f are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		mplsubg.s	. . . 4 |- S = ( I mPwSer R )
2		mplsubg.i	. . . 4 |- ( ph -> I e. Fin )
3		mplsubg.r	. . . 4 |- ( ph -> R e. Grp )
4		eqid 2207	. . . 4 |- { f e. ( NN0 ^m I ) | ( `' f " NN ) e. Fin } = { f e. ( NN0 ^m I ) | ( `' f " NN ) e. Fin }
5		eqid 2207	. . . 4 |- ( invg ` R ) = ( invg ` R )
6		eqid 2207	. . . 4 |- ( Base ` S ) = ( Base ` S )
7		mplsubgfileminv.inv	. . . 4 |- N = ( invg ` S )
8		mplsubg.p	. . . . . 6 |- P = ( I mPoly R )
9		mplsubg.u	. . . . . 6 |- U = ( Base ` P )
10	8, 1, 9, 6	mplbasss 14573	. . . . 5 |- U C_ ( Base ` S )
11		mplsubgfileminv.x	. . . . 5 |- ( ph -> X e. U )
12	10, 11	sselid 3199	. . . 4 |- ( ph -> X e. ( Base ` S ) )
13	1, 2, 3, 4, 5, 6, 7, 12	psrneg 14564	. . 3 |- ( ph -> ( N ` X ) = ( ( invg ` R ) o. X ) )
14	1, 2, 3, 4, 5, 6, 12	psrnegcl 14560	. . 3 |- ( ph -> ( ( invg ` R ) o. X ) e. ( Base ` S ) )
15	13, 14	eqeltrd 2284	. 2 |- ( ph -> ( N ` X ) e. ( Base ` S ) )
16		eqid 2207	. . . . . . 7 |- ( 0g ` R ) = ( 0g ` R )
17	8, 1, 6, 16, 9	mplelbascoe 14569	. . . . . 6 |- ( ( I e. Fin /\ R e. Grp ) -> ( X e. U <-> ( X e. ( Base ` S ) /\ E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( X ` b ) = ( 0g ` R ) ) ) ) )
18	2, 3, 17	syl2anc 411	. . . . 5 |- ( ph -> ( X e. U <-> ( X e. ( Base ` S ) /\ E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( X ` b ) = ( 0g ` R ) ) ) ) )
19	11, 18	mpbid 147	. . . 4 |- ( ph -> ( X e. ( Base ` S ) /\ E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( X ` b ) = ( 0g ` R ) ) ) )
20	19	simprd 114	. . 3 |- ( ph -> E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( X ` b ) = ( 0g ` R ) ) )
21	13	fveq1d 5601	. . . . . . . . 9 |- ( ph -> ( ( N ` X ) ` b ) = ( ( ( invg ` R ) o. X ) ` b ) )
22	21	ad2antrr 488	. . . . . . . 8 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> ( ( N ` X ) ` b ) = ( ( ( invg ` R ) o. X ) ` b ) )
23		eqid 2207	. . . . . . . . . . 11 |- ( Base ` R ) = ( Base ` R )
24	1, 23, 2, 6, 12	psrelbasfi 14553	. . . . . . . . . 10 |- ( ph -> X : ( NN0 ^m I ) --> ( Base ` R ) )
25	24	ad2antrr 488	. . . . . . . . 9 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> X : ( NN0 ^m I ) --> ( Base ` R ) )
26		simplr 528	. . . . . . . . 9 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> b e. ( NN0 ^m I ) )
27		fvco3 5673	. . . . . . . . 9 |- ( ( X : ( NN0 ^m I ) --> ( Base ` R ) /\ b e. ( NN0 ^m I ) ) -> ( ( ( invg ` R ) o. X ) ` b ) = ( ( invg ` R ) ` ( X ` b ) ) )
28	25, 26, 27	syl2anc 411	. . . . . . . 8 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> ( ( ( invg ` R ) o. X ) ` b ) = ( ( invg ` R ) ` ( X ` b ) ) )
29		simpr 110	. . . . . . . . . 10 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> ( X ` b ) = ( 0g ` R ) )
30	29	fveq2d 5603	. . . . . . . . 9 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> ( ( invg ` R ) ` ( X ` b ) ) = ( ( invg ` R ) ` ( 0g ` R ) ) )
31	16, 5	grpinvid 13507	. . . . . . . . . . 11 |- ( R e. Grp -> ( ( invg ` R ) ` ( 0g ` R ) ) = ( 0g ` R ) )
32	3, 31	syl 14	. . . . . . . . . 10 |- ( ph -> ( ( invg ` R ) ` ( 0g ` R ) ) = ( 0g ` R ) )
33	32	ad2antrr 488	. . . . . . . . 9 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> ( ( invg ` R ) ` ( 0g ` R ) ) = ( 0g ` R ) )
34	30, 33	eqtrd 2240	. . . . . . . 8 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> ( ( invg ` R ) ` ( X ` b ) ) = ( 0g ` R ) )
35	22, 28, 34	3eqtrd 2244	. . . . . . 7 |- ( ( ( ph /\ b e. ( NN0 ^m I ) ) /\ ( X ` b ) = ( 0g ` R ) ) -> ( ( N ` X ) ` b ) = ( 0g ` R ) )
36	35	ex 115	. . . . . 6 |- ( ( ph /\ b e. ( NN0 ^m I ) ) -> ( ( X ` b ) = ( 0g ` R ) -> ( ( N ` X ) ` b ) = ( 0g ` R ) ) )
37	36	imim2d 54	. . . . 5 |- ( ( ph /\ b e. ( NN0 ^m I ) ) -> ( ( A. k e. I ( a ` k ) < ( b ` k ) -> ( X ` b ) = ( 0g ` R ) ) -> ( A. k e. I ( a ` k ) < ( b ` k ) -> ( ( N ` X ) ` b ) = ( 0g ` R ) ) ) )
38	37	ralimdva 2575	. . . 4 |- ( ph -> ( A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( X ` b ) = ( 0g ` R ) ) -> A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( ( N ` X ) ` b ) = ( 0g ` R ) ) ) )
39	38	reximdv 2609	. . 3 |- ( ph -> ( E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( X ` b ) = ( 0g ` R ) ) -> E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( ( N ` X ) ` b ) = ( 0g ` R ) ) ) )
40	20, 39	mpd 13	. 2 |- ( ph -> E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( ( N ` X ) ` b ) = ( 0g ` R ) ) )
41	8, 1, 6, 16, 9	mplelbascoe 14569	. . 3 |- ( ( I e. Fin /\ R e. Grp ) -> ( ( N ` X ) e. U <-> ( ( N ` X ) e. ( Base ` S ) /\ E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( ( N ` X ) ` b ) = ( 0g ` R ) ) ) ) )
42	2, 3, 41	syl2anc 411	. 2 |- ( ph -> ( ( N ` X ) e. U <-> ( ( N ` X ) e. ( Base ` S ) /\ E. a e. ( NN0 ^m I ) A. b e. ( NN0 ^m I ) ( A. k e. I ( a ` k ) < ( b ` k ) -> ( ( N ` X ) ` b ) = ( 0g ` R ) ) ) ) )
43	15, 40, 42	mpbir2and 947	1 |- ( ph -> ( N ` X ) e. U )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1373   e. wcel 2178   A.wral 2486   E.wrex 2487   {crab 2490   class class class wbr 4059   `'ccnv 4692   "cima 4696   o. ccom 4697   -->wf 5286   ` cfv 5290  (class class class)co 5967   ^m cmap 6758   Fincfn 6850   < clt 8142   NNcn 9071   NN0cn0 9330   Basecbs 12947   0gc0g 13203   Grpcgrp 13447   invgcminusg 13448   mPwSer cmps 14538   mPoly cmpl 14539

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 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-13 2180  ax-14 2181  ax-ext 2189  ax-coll 4175  ax-sep 4178  ax-nul 4186  ax-pow 4234  ax-pr 4269  ax-un 4498  ax-setind 4603  ax-iinf 4654  ax-cnex 8051  ax-resscn 8052  ax-1cn 8053  ax-1re 8054  ax-icn 8055  ax-addcl 8056  ax-addrcl 8057  ax-mulcl 8058  ax-addcom 8060  ax-mulcom 8061  ax-addass 8062  ax-mulass 8063  ax-distr 8064  ax-i2m1 8065  ax-0lt1 8066  ax-1rid 8067  ax-0id 8068  ax-rnegex 8069  ax-cnre 8071  ax-pre-ltirr 8072  ax-pre-ltwlin 8073  ax-pre-lttrn 8074  ax-pre-apti 8075  ax-pre-ltadd 8076

This theorem depends on definitions:  df-bi 117  df-dc 837  df-3or 982  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2194  df-cleq 2200  df-clel 2203  df-nfc 2339  df-ne 2379  df-nel 2474  df-ral 2491  df-rex 2492  df-reu 2493  df-rmo 2494  df-rab 2495  df-v 2778  df-sbc 3006  df-csb 3102  df-dif 3176  df-un 3178  df-in 3180  df-ss 3187  df-nul 3469  df-if 3580  df-pw 3628  df-sn 3649  df-pr 3650  df-tp 3651  df-op 3652  df-uni 3865  df-int 3900  df-iun 3943  df-br 4060  df-opab 4122  df-mpt 4123  df-tr 4159  df-id 4358  df-iord 4431  df-on 4433  df-suc 4436  df-iom 4657  df-xp 4699  df-rel 4700  df-cnv 4701  df-co 4702  df-dm 4703  df-rn 4704  df-res 4705  df-ima 4706  df-iota 5251  df-fun 5292  df-fn 5293  df-f 5294  df-f1 5295  df-fo 5296  df-f1o 5297  df-fv 5298  df-riota 5922  df-ov 5970  df-oprab 5971  df-mpo 5972  df-of 6181  df-1st 6249  df-2nd 6250  df-1o 6525  df-er 6643  df-map 6760  df-ixp 6809  df-en 6851  df-fin 6853  df-sup 7112  df-pnf 8144  df-mnf 8145  df-xr 8146  df-ltxr 8147  df-le 8148  df-sub 8280  df-neg 8281  df-inn 9072  df-2 9130  df-3 9131  df-4 9132  df-5 9133  df-6 9134  df-7 9135  df-8 9136  df-9 9137  df-n0 9331  df-z 9408  df-dec 9540  df-uz 9684  df-fz 10166  df-struct 12949  df-ndx 12950  df-slot 12951  df-base 12953  df-sets 12954  df-iress 12955  df-plusg 13037  df-mulr 13038  df-sca 13040  df-vsca 13041  df-ip 13042  df-tset 13043  df-ple 13044  df-ds 13046  df-hom 13048  df-cco 13049  df-rest 13188  df-topn 13189  df-0g 13205  df-topgen 13207  df-pt 13208  df-prds 13214  df-pws 13237  df-mgm 13303  df-sgrp 13349  df-mnd 13364  df-grp 13450  df-minusg 13451  df-psr 14540  df-mplcoe 14541

This theorem is referenced by:  mplsubgfi  14578