ply1fermltlchr - Metamath Proof Explorer

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Theorem ply1fermltlchr 22250

Description: Fermat's little theorem for polynomials in a commutative ring 𝐹 of characteristic 𝑃 prime: we have the polynomial equation (𝑋 + 𝐴)↑𝑃 = ((𝑋↑𝑃) + 𝐴). (Contributed by Thierry Arnoux, 9-Jan-2025.)

**Hypotheses**
Ref	Expression
ply1fermltlchr.w	⊢ 𝑊 = (Poly₁‘𝐹)
ply1fermltlchr.x	⊢ 𝑋 = (var₁‘𝐹)
ply1fermltlchr.l	⊢ + = (+_g‘𝑊)
ply1fermltlchr.n	⊢ 𝑁 = (mulGrp‘𝑊)
ply1fermltlchr.t	⊢ ↑ = (._g‘𝑁)
ply1fermltlchr.c	⊢ 𝐶 = (algSc‘𝑊)
ply1fermltlchr.a	⊢ 𝐴 = (𝐶‘((ℤRHom‘𝐹)‘𝐸))
ply1fermltlchr.p	⊢ 𝑃 = (chr‘𝐹)
ply1fermltlchr.f	⊢ (𝜑 → 𝐹 ∈ CRing)
ply1fermltlchr.1	⊢ (𝜑 → 𝑃 ∈ ℙ)
ply1fermltlchr.2	⊢ (𝜑 → 𝐸 ∈ ℤ)

**Assertion**
Ref	Expression
ply1fermltlchr	⊢ (𝜑 → (𝑃 ↑ (𝑋 + 𝐴)) = ((𝑃 ↑ 𝑋) + 𝐴))

**Proof of Theorem ply1fermltlchr**
Step	Hyp	Ref	Expression
1		eqid 2735	. . 3 ⊢ (Base‘𝑊) = (Base‘𝑊)
2		ply1fermltlchr.l	. . 3 ⊢ + = (+_g‘𝑊)
3		ply1fermltlchr.t	. . . 4 ⊢ ↑ = (._g‘𝑁)
4		ply1fermltlchr.n	. . . . 5 ⊢ 𝑁 = (mulGrp‘𝑊)
5	4	fveq2i 6879	. . . 4 ⊢ (._g‘𝑁) = (._g‘(mulGrp‘𝑊))
6	3, 5	eqtri 2758	. . 3 ⊢ ↑ = (._g‘(mulGrp‘𝑊))
7		eqid 2735	. . 3 ⊢ (chr‘𝑊) = (chr‘𝑊)
8		ply1fermltlchr.f	. . . 4 ⊢ (𝜑 → 𝐹 ∈ CRing)
9		ply1fermltlchr.w	. . . . 5 ⊢ 𝑊 = (Poly₁‘𝐹)
10	9	ply1crng 22134	. . . 4 ⊢ (𝐹 ∈ CRing → 𝑊 ∈ CRing)
11	8, 10	syl 17	. . 3 ⊢ (𝜑 → 𝑊 ∈ CRing)
12	9	ply1chr 22244	. . . . . 6 ⊢ (𝐹 ∈ CRing → (chr‘𝑊) = (chr‘𝐹))
13	8, 12	syl 17	. . . . 5 ⊢ (𝜑 → (chr‘𝑊) = (chr‘𝐹))
14		ply1fermltlchr.p	. . . . 5 ⊢ 𝑃 = (chr‘𝐹)
15	13, 14	eqtr4di 2788	. . . 4 ⊢ (𝜑 → (chr‘𝑊) = 𝑃)
16		ply1fermltlchr.1	. . . 4 ⊢ (𝜑 → 𝑃 ∈ ℙ)
17	15, 16	eqeltrd 2834	. . 3 ⊢ (𝜑 → (chr‘𝑊) ∈ ℙ)
18	8	crngringd 20206	. . . 4 ⊢ (𝜑 → 𝐹 ∈ Ring)
19		ply1fermltlchr.x	. . . . 5 ⊢ 𝑋 = (var₁‘𝐹)
20	19, 9, 1	vr1cl 22153	. . . 4 ⊢ (𝐹 ∈ Ring → 𝑋 ∈ (Base‘𝑊))
21	18, 20	syl 17	. . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘𝑊))
22		ply1fermltlchr.a	. . . 4 ⊢ 𝐴 = (𝐶‘((ℤRHom‘𝐹)‘𝐸))
23		eqid 2735	. . . . . . . 8 ⊢ (ℤRHom‘𝐹) = (ℤRHom‘𝐹)
24	23	zrhrhm 21472	. . . . . . 7 ⊢ (𝐹 ∈ Ring → (ℤRHom‘𝐹) ∈ (ℤ_ring RingHom 𝐹))
25		zringbas 21414	. . . . . . . 8 ⊢ ℤ = (Base‘ℤ_ring)
26		eqid 2735	. . . . . . . 8 ⊢ (Base‘𝐹) = (Base‘𝐹)
27	25, 26	rhmf 20445	. . . . . . 7 ⊢ ((ℤRHom‘𝐹) ∈ (ℤ_ring RingHom 𝐹) → (ℤRHom‘𝐹):ℤ⟶(Base‘𝐹))
28	18, 24, 27	3syl 18	. . . . . 6 ⊢ (𝜑 → (ℤRHom‘𝐹):ℤ⟶(Base‘𝐹))
29		ply1fermltlchr.2	. . . . . 6 ⊢ (𝜑 → 𝐸 ∈ ℤ)
30	28, 29	ffvelcdmd 7075	. . . . 5 ⊢ (𝜑 → ((ℤRHom‘𝐹)‘𝐸) ∈ (Base‘𝐹))
31		ply1fermltlchr.c	. . . . . 6 ⊢ 𝐶 = (algSc‘𝑊)
32	9, 31, 26, 1	ply1sclcl 22223	. . . . 5 ⊢ ((𝐹 ∈ Ring ∧ ((ℤRHom‘𝐹)‘𝐸) ∈ (Base‘𝐹)) → (𝐶‘((ℤRHom‘𝐹)‘𝐸)) ∈ (Base‘𝑊))
33	18, 30, 32	syl2anc 584	. . . 4 ⊢ (𝜑 → (𝐶‘((ℤRHom‘𝐹)‘𝐸)) ∈ (Base‘𝑊))
34	22, 33	eqeltrid 2838	. . 3 ⊢ (𝜑 → 𝐴 ∈ (Base‘𝑊))
35	1, 2, 6, 7, 11, 17, 21, 34	freshmansdream 21535	. 2 ⊢ (𝜑 → ((chr‘𝑊) ↑ (𝑋 + 𝐴)) = (((chr‘𝑊) ↑ 𝑋) + ((chr‘𝑊) ↑ 𝐴)))
36	15	oveq1d 7420	. 2 ⊢ (𝜑 → ((chr‘𝑊) ↑ (𝑋 + 𝐴)) = (𝑃 ↑ (𝑋 + 𝐴)))
37	15	oveq1d 7420	. . 3 ⊢ (𝜑 → ((chr‘𝑊) ↑ 𝑋) = (𝑃 ↑ 𝑋))
38	15	oveq1d 7420	. . . 4 ⊢ (𝜑 → ((chr‘𝑊) ↑ 𝐴) = (𝑃 ↑ 𝐴))
39	9	ply1assa 22135	. . . . . . . . 9 ⊢ (𝐹 ∈ CRing → 𝑊 ∈ AssAlg)
40		eqid 2735	. . . . . . . . . 10 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊)
41	31, 40	asclrhm 21850	. . . . . . . . 9 ⊢ (𝑊 ∈ AssAlg → 𝐶 ∈ ((Scalar‘𝑊) RingHom 𝑊))
42	8, 39, 41	3syl 18	. . . . . . . 8 ⊢ (𝜑 → 𝐶 ∈ ((Scalar‘𝑊) RingHom 𝑊))
43	8	crnggrpd 20207	. . . . . . . . . 10 ⊢ (𝜑 → 𝐹 ∈ Grp)
44	9	ply1sca 22188	. . . . . . . . . 10 ⊢ (𝐹 ∈ Grp → 𝐹 = (Scalar‘𝑊))
45	43, 44	syl 17	. . . . . . . . 9 ⊢ (𝜑 → 𝐹 = (Scalar‘𝑊))
46	45	oveq1d 7420	. . . . . . . 8 ⊢ (𝜑 → (𝐹 RingHom 𝑊) = ((Scalar‘𝑊) RingHom 𝑊))
47	42, 46	eleqtrrd 2837	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ (𝐹 RingHom 𝑊))
48		eqid 2735	. . . . . . . 8 ⊢ (mulGrp‘𝐹) = (mulGrp‘𝐹)
49	48, 4	rhmmhm 20439	. . . . . . 7 ⊢ (𝐶 ∈ (𝐹 RingHom 𝑊) → 𝐶 ∈ ((mulGrp‘𝐹) MndHom 𝑁))
50	47, 49	syl 17	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ((mulGrp‘𝐹) MndHom 𝑁))
51		prmnn 16693	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
52		nnnn0 12508	. . . . . . 7 ⊢ (𝑃 ∈ ℕ → 𝑃 ∈ ℕ₀)
53	16, 51, 52	3syl 18	. . . . . 6 ⊢ (𝜑 → 𝑃 ∈ ℕ₀)
54	48, 26	mgpbas 20105	. . . . . . 7 ⊢ (Base‘𝐹) = (Base‘(mulGrp‘𝐹))
55		eqid 2735	. . . . . . 7 ⊢ (._g‘(mulGrp‘𝐹)) = (._g‘(mulGrp‘𝐹))
56	54, 55, 3	mhmmulg 19098	. . . . . 6 ⊢ ((𝐶 ∈ ((mulGrp‘𝐹) MndHom 𝑁) ∧ 𝑃 ∈ ℕ₀ ∧ ((ℤRHom‘𝐹)‘𝐸) ∈ (Base‘𝐹)) → (𝐶‘(𝑃(._g‘(mulGrp‘𝐹))((ℤRHom‘𝐹)‘𝐸))) = (𝑃 ↑ (𝐶‘((ℤRHom‘𝐹)‘𝐸))))
57	50, 53, 30, 56	syl3anc 1373	. . . . 5 ⊢ (𝜑 → (𝐶‘(𝑃(._g‘(mulGrp‘𝐹))((ℤRHom‘𝐹)‘𝐸))) = (𝑃 ↑ (𝐶‘((ℤRHom‘𝐹)‘𝐸))))
58	22	a1i 11	. . . . . 6 ⊢ (𝜑 → 𝐴 = (𝐶‘((ℤRHom‘𝐹)‘𝐸)))
59	58	oveq2d 7421	. . . . 5 ⊢ (𝜑 → (𝑃 ↑ 𝐴) = (𝑃 ↑ (𝐶‘((ℤRHom‘𝐹)‘𝐸))))
60	57, 59	eqtr4d 2773	. . . 4 ⊢ (𝜑 → (𝐶‘(𝑃(._g‘(mulGrp‘𝐹))((ℤRHom‘𝐹)‘𝐸))) = (𝑃 ↑ 𝐴))
61		eqid 2735	. . . . . . 7 ⊢ ((ℤRHom‘𝐹)‘𝐸) = ((ℤRHom‘𝐹)‘𝐸)
62	14, 26, 55, 61, 16, 29, 8	fermltlchr 21490	. . . . . 6 ⊢ (𝜑 → (𝑃(._g‘(mulGrp‘𝐹))((ℤRHom‘𝐹)‘𝐸)) = ((ℤRHom‘𝐹)‘𝐸))
63	62	fveq2d 6880	. . . . 5 ⊢ (𝜑 → (𝐶‘(𝑃(._g‘(mulGrp‘𝐹))((ℤRHom‘𝐹)‘𝐸))) = (𝐶‘((ℤRHom‘𝐹)‘𝐸)))
64	63, 22	eqtr4di 2788	. . . 4 ⊢ (𝜑 → (𝐶‘(𝑃(._g‘(mulGrp‘𝐹))((ℤRHom‘𝐹)‘𝐸))) = 𝐴)
65	38, 60, 64	3eqtr2d 2776	. . 3 ⊢ (𝜑 → ((chr‘𝑊) ↑ 𝐴) = 𝐴)
66	37, 65	oveq12d 7423	. 2 ⊢ (𝜑 → (((chr‘𝑊) ↑ 𝑋) + ((chr‘𝑊) ↑ 𝐴)) = ((𝑃 ↑ 𝑋) + 𝐴))
67	35, 36, 66	3eqtr3d 2778	1 ⊢ (𝜑 → (𝑃 ↑ (𝑋 + 𝐴)) = ((𝑃 ↑ 𝑋) + 𝐴))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2108 ⟶wf 6527 ‘cfv 6531 (class class class)co 7405 ℕcn 12240 ℕ₀cn0 12501 ℤcz 12588 ℙcprime 16690 Basecbs 17228 +_gcplusg 17271 Scalarcsca 17274 MndHom cmhm 18759 Grpcgrp 18916 ._gcmg 19050 mulGrpcmgp 20100 Ringcrg 20193 CRingccrg 20194 RingHom crh 20429 ℤ_ringczring 21407 ℤRHomczrh 21460 chrcchr 21462 AssAlgcasa 21810 algSccascl 21812 var₁cv1 22111 Poly₁cpl1 22112

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 ax-cnex 11185 ax-resscn 11186 ax-1cn 11187 ax-icn 11188 ax-addcl 11189 ax-addrcl 11190 ax-mulcl 11191 ax-mulrcl 11192 ax-mulcom 11193 ax-addass 11194 ax-mulass 11195 ax-distr 11196 ax-i2m1 11197 ax-1ne0 11198 ax-1rid 11199 ax-rnegex 11200 ax-rrecex 11201 ax-cnre 11202 ax-pre-lttri 11203 ax-pre-lttrn 11204 ax-pre-ltadd 11205 ax-pre-mulgt0 11206 ax-pre-sup 11207 ax-addf 11208 ax-mulf 11209

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3359 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-tp 4606 df-op 4608 df-uni 4884 df-int 4923 df-iun 4969 df-iin 4970 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-se 5607 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-isom 6540 df-riota 7362 df-ov 7408 df-oprab 7409 df-mpo 7410 df-of 7671 df-ofr 7672 df-om 7862 df-1st 7988 df-2nd 7989 df-supp 8160 df-tpos 8225 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-oadd 8484 df-er 8719 df-map 8842 df-pm 8843 df-ixp 8912 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-fsupp 9374 df-sup 9454 df-inf 9455 df-oi 9524 df-dju 9915 df-card 9953 df-pnf 11271 df-mnf 11272 df-xr 11273 df-ltxr 11274 df-le 11275 df-sub 11468 df-neg 11469 df-div 11895 df-nn 12241 df-2 12303 df-3 12304 df-4 12305 df-5 12306 df-6 12307 df-7 12308 df-8 12309 df-9 12310 df-n0 12502 df-xnn0 12575 df-z 12589 df-dec 12709 df-uz 12853 df-rp 13009 df-fz 13525 df-fzo 13672 df-fl 13809 df-mod 13887 df-seq 14020 df-exp 14080 df-fac 14292 df-bc 14321 df-hash 14349 df-cj 15118 df-re 15119 df-im 15120 df-sqrt 15254 df-abs 15255 df-dvds 16273 df-gcd 16514 df-prm 16691 df-phi 16785 df-struct 17166 df-sets 17183 df-slot 17201 df-ndx 17213 df-base 17229 df-ress 17252 df-plusg 17284 df-mulr 17285 df-starv 17286 df-sca 17287 df-vsca 17288 df-ip 17289 df-tset 17290 df-ple 17291 df-ds 17293 df-unif 17294 df-hom 17295 df-cco 17296 df-0g 17455 df-gsum 17456 df-prds 17461 df-pws 17463 df-mre 17598 df-mrc 17599 df-acs 17601 df-mgm 18618 df-sgrp 18697 df-mnd 18713 df-mhm 18761 df-submnd 18762 df-grp 18919 df-minusg 18920 df-sbg 18921 df-mulg 19051 df-subg 19106 df-ghm 19196 df-cntz 19300 df-od 19509 df-cmn 19763 df-abl 19764 df-mgp 20101 df-rng 20113 df-ur 20142 df-srg 20147 df-ring 20195 df-cring 20196 df-oppr 20297 df-dvdsr 20317 df-unit 20318 df-invr 20348 df-dvr 20361 df-rhm 20432 df-subrng 20506 df-subrg 20530 df-drng 20691 df-lmod 20819 df-lss 20889 df-cnfld 21316 df-zring 21408 df-zrh 21464 df-chr 21466 df-assa 21813 df-ascl 21815 df-psr 21869 df-mvr 21870 df-mpl 21871 df-opsr 21873 df-psr1 22115 df-vr1 22116 df-ply1 22117 df-coe1 22118

This theorem is referenced by: ply1fermltl 33597 aks6d1c1p2 42122

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