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Theorem lgsqrlem3 27311

Description: Lemma for lgsqr 27314. (Contributed by Mario Carneiro, 15-Jun-2015.)

**Hypotheses**
Ref	Expression
lgsqr.y	⊢ 𝑌 = (ℤ/nℤ‘𝑃)
lgsqr.s	⊢ 𝑆 = (Poly₁‘𝑌)
lgsqr.b	⊢ 𝐵 = (Base‘𝑆)
lgsqr.d	⊢ 𝐷 = (deg₁‘𝑌)
lgsqr.o	⊢ 𝑂 = (eval₁‘𝑌)
lgsqr.e	⊢ ↑ = (._g‘(mulGrp‘𝑆))
lgsqr.x	⊢ 𝑋 = (var₁‘𝑌)
lgsqr.m	⊢ − = (-_g‘𝑆)
lgsqr.u	⊢ 1 = (1_r‘𝑆)
lgsqr.t	⊢ 𝑇 = ((((𝑃 − 1) / 2) ↑ 𝑋) − 1 )
lgsqr.l	⊢ 𝐿 = (ℤRHom‘𝑌)
lgsqr.1	⊢ (𝜑 → 𝑃 ∈ (ℙ ∖ {2}))
lgsqr.g	⊢ 𝐺 = (𝑦 ∈ (1...((𝑃 − 1) / 2)) ↦ (𝐿‘(𝑦↑2)))
lgsqr.3	⊢ (𝜑 → 𝐴 ∈ ℤ)
lgsqr.4	⊢ (𝜑 → (𝐴 /_L 𝑃) = 1)

**Assertion**
Ref	Expression
lgsqrlem3	⊢ (𝜑 → (𝐿‘𝐴) ∈ (^◡(𝑂‘𝑇) “ {(0_g‘𝑌)}))

Distinct variable groups: 𝑦,𝑂 𝑦,𝑃 𝜑,𝑦 𝑦,𝑇 𝑦,𝐿 𝑦,𝑌 Allowed substitution hints: 𝐴(𝑦) 𝐵(𝑦) 𝐷(𝑦) 𝑆(𝑦) 1 (𝑦) ↑ (𝑦) 𝐺(𝑦) − (𝑦) 𝑋(𝑦)

**Proof of Theorem lgsqrlem3**
Step	Hyp	Ref	Expression
1		lgsqr.1	. . . . . . . . . 10 ⊢ (𝜑 → 𝑃 ∈ (ℙ ∖ {2}))
2	1	eldifad 3938	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 ∈ ℙ)
3		lgsqr.y	. . . . . . . . . 10 ⊢ 𝑌 = (ℤ/nℤ‘𝑃)
4	3	znfld 21521	. . . . . . . . 9 ⊢ (𝑃 ∈ ℙ → 𝑌 ∈ Field)
5	2, 4	syl 17	. . . . . . . 8 ⊢ (𝜑 → 𝑌 ∈ Field)
6		fldidom 20731	. . . . . . . 8 ⊢ (𝑌 ∈ Field → 𝑌 ∈ IDomn)
7	5, 6	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ IDomn)
8		isidom 20685	. . . . . . . 8 ⊢ (𝑌 ∈ IDomn ↔ (𝑌 ∈ CRing ∧ 𝑌 ∈ Domn))
9	8	simplbi 497	. . . . . . 7 ⊢ (𝑌 ∈ IDomn → 𝑌 ∈ CRing)
10	7, 9	syl 17	. . . . . 6 ⊢ (𝜑 → 𝑌 ∈ CRing)
11		crngring 20205	. . . . . 6 ⊢ (𝑌 ∈ CRing → 𝑌 ∈ Ring)
12	10, 11	syl 17	. . . . 5 ⊢ (𝜑 → 𝑌 ∈ Ring)
13		lgsqr.l	. . . . . 6 ⊢ 𝐿 = (ℤRHom‘𝑌)
14	13	zrhrhm 21472	. . . . 5 ⊢ (𝑌 ∈ Ring → 𝐿 ∈ (ℤ_ring RingHom 𝑌))
15	12, 14	syl 17	. . . 4 ⊢ (𝜑 → 𝐿 ∈ (ℤ_ring RingHom 𝑌))
16		zringbas 21414	. . . . 5 ⊢ ℤ = (Base‘ℤ_ring)
17		eqid 2735	. . . . 5 ⊢ (Base‘𝑌) = (Base‘𝑌)
18	16, 17	rhmf 20445	. . . 4 ⊢ (𝐿 ∈ (ℤ_ring RingHom 𝑌) → 𝐿:ℤ⟶(Base‘𝑌))
19	15, 18	syl 17	. . 3 ⊢ (𝜑 → 𝐿:ℤ⟶(Base‘𝑌))
20		lgsqr.3	. . 3 ⊢ (𝜑 → 𝐴 ∈ ℤ)
21	19, 20	ffvelcdmd 7075	. 2 ⊢ (𝜑 → (𝐿‘𝐴) ∈ (Base‘𝑌))
22		lgsqr.s	. . 3 ⊢ 𝑆 = (Poly₁‘𝑌)
23		lgsqr.b	. . 3 ⊢ 𝐵 = (Base‘𝑆)
24		lgsqr.d	. . 3 ⊢ 𝐷 = (deg₁‘𝑌)
25		lgsqr.o	. . 3 ⊢ 𝑂 = (eval₁‘𝑌)
26		lgsqr.e	. . 3 ⊢ ↑ = (._g‘(mulGrp‘𝑆))
27		lgsqr.x	. . 3 ⊢ 𝑋 = (var₁‘𝑌)
28		lgsqr.m	. . 3 ⊢ − = (-_g‘𝑆)
29		lgsqr.u	. . 3 ⊢ 1 = (1_r‘𝑆)
30		lgsqr.t	. . 3 ⊢ 𝑇 = ((((𝑃 − 1) / 2) ↑ 𝑋) − 1 )
31		lgsvalmod 27279	. . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝐴 /_L 𝑃) mod 𝑃) = ((𝐴↑((𝑃 − 1) / 2)) mod 𝑃))
32	20, 1, 31	syl2anc 584	. . . 4 ⊢ (𝜑 → ((𝐴 /_L 𝑃) mod 𝑃) = ((𝐴↑((𝑃 − 1) / 2)) mod 𝑃))
33		lgsqr.4	. . . . 5 ⊢ (𝜑 → (𝐴 /_L 𝑃) = 1)
34	33	oveq1d 7420	. . . 4 ⊢ (𝜑 → ((𝐴 /_L 𝑃) mod 𝑃) = (1 mod 𝑃))
35	32, 34	eqtr3d 2772	. . 3 ⊢ (𝜑 → ((𝐴↑((𝑃 − 1) / 2)) mod 𝑃) = (1 mod 𝑃))
36	3, 22, 23, 24, 25, 26, 27, 28, 29, 30, 13, 1, 20, 35	lgsqrlem1 27309	. 2 ⊢ (𝜑 → ((𝑂‘𝑇)‘(𝐿‘𝐴)) = (0_g‘𝑌))
37		eqid 2735	. . . . 5 ⊢ (𝑌 ↑_s (Base‘𝑌)) = (𝑌 ↑_s (Base‘𝑌))
38		eqid 2735	. . . . 5 ⊢ (Base‘(𝑌 ↑_s (Base‘𝑌))) = (Base‘(𝑌 ↑_s (Base‘𝑌)))
39		fvexd 6891	. . . . 5 ⊢ (𝜑 → (Base‘𝑌) ∈ V)
40	25, 22, 37, 17	evl1rhm 22270	. . . . . . . 8 ⊢ (𝑌 ∈ CRing → 𝑂 ∈ (𝑆 RingHom (𝑌 ↑_s (Base‘𝑌))))
41	10, 40	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑂 ∈ (𝑆 RingHom (𝑌 ↑_s (Base‘𝑌))))
42	23, 38	rhmf 20445	. . . . . . 7 ⊢ (𝑂 ∈ (𝑆 RingHom (𝑌 ↑_s (Base‘𝑌))) → 𝑂:𝐵⟶(Base‘(𝑌 ↑_s (Base‘𝑌))))
43	41, 42	syl 17	. . . . . 6 ⊢ (𝜑 → 𝑂:𝐵⟶(Base‘(𝑌 ↑_s (Base‘𝑌))))
44	22	ply1ring 22183	. . . . . . . . . 10 ⊢ (𝑌 ∈ Ring → 𝑆 ∈ Ring)
45	12, 44	syl 17	. . . . . . . . 9 ⊢ (𝜑 → 𝑆 ∈ Ring)
46		ringgrp 20198	. . . . . . . . 9 ⊢ (𝑆 ∈ Ring → 𝑆 ∈ Grp)
47	45, 46	syl 17	. . . . . . . 8 ⊢ (𝜑 → 𝑆 ∈ Grp)
48		eqid 2735	. . . . . . . . . 10 ⊢ (mulGrp‘𝑆) = (mulGrp‘𝑆)
49	48, 23	mgpbas 20105	. . . . . . . . 9 ⊢ 𝐵 = (Base‘(mulGrp‘𝑆))
50	48	ringmgp 20199	. . . . . . . . . 10 ⊢ (𝑆 ∈ Ring → (mulGrp‘𝑆) ∈ Mnd)
51	45, 50	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (mulGrp‘𝑆) ∈ Mnd)
52		oddprm 16830	. . . . . . . . . . 11 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → ((𝑃 − 1) / 2) ∈ ℕ)
53	1, 52	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑃 − 1) / 2) ∈ ℕ)
54	53	nnnn0d 12562	. . . . . . . . 9 ⊢ (𝜑 → ((𝑃 − 1) / 2) ∈ ℕ₀)
55	27, 22, 23	vr1cl 22153	. . . . . . . . . 10 ⊢ (𝑌 ∈ Ring → 𝑋 ∈ 𝐵)
56	12, 55	syl 17	. . . . . . . . 9 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
57	49, 26, 51, 54, 56	mulgnn0cld 19078	. . . . . . . 8 ⊢ (𝜑 → (((𝑃 − 1) / 2) ↑ 𝑋) ∈ 𝐵)
58	23, 29	ringidcl 20225	. . . . . . . . 9 ⊢ (𝑆 ∈ Ring → 1 ∈ 𝐵)
59	45, 58	syl 17	. . . . . . . 8 ⊢ (𝜑 → 1 ∈ 𝐵)
60	23, 28	grpsubcl 19003	. . . . . . . 8 ⊢ ((𝑆 ∈ Grp ∧ (((𝑃 − 1) / 2) ↑ 𝑋) ∈ 𝐵 ∧ 1 ∈ 𝐵) → ((((𝑃 − 1) / 2) ↑ 𝑋) − 1 ) ∈ 𝐵)
61	47, 57, 59, 60	syl3anc 1373	. . . . . . 7 ⊢ (𝜑 → ((((𝑃 − 1) / 2) ↑ 𝑋) − 1 ) ∈ 𝐵)
62	30, 61	eqeltrid 2838	. . . . . 6 ⊢ (𝜑 → 𝑇 ∈ 𝐵)
63	43, 62	ffvelcdmd 7075	. . . . 5 ⊢ (𝜑 → (𝑂‘𝑇) ∈ (Base‘(𝑌 ↑_s (Base‘𝑌))))
64	37, 17, 38, 5, 39, 63	pwselbas 17503	. . . 4 ⊢ (𝜑 → (𝑂‘𝑇):(Base‘𝑌)⟶(Base‘𝑌))
65	64	ffnd 6707	. . 3 ⊢ (𝜑 → (𝑂‘𝑇) Fn (Base‘𝑌))
66		fniniseg 7050	. . 3 ⊢ ((𝑂‘𝑇) Fn (Base‘𝑌) → ((𝐿‘𝐴) ∈ (^◡(𝑂‘𝑇) “ {(0_g‘𝑌)}) ↔ ((𝐿‘𝐴) ∈ (Base‘𝑌) ∧ ((𝑂‘𝑇)‘(𝐿‘𝐴)) = (0_g‘𝑌))))
67	65, 66	syl 17	. 2 ⊢ (𝜑 → ((𝐿‘𝐴) ∈ (^◡(𝑂‘𝑇) “ {(0_g‘𝑌)}) ↔ ((𝐿‘𝐴) ∈ (Base‘𝑌) ∧ ((𝑂‘𝑇)‘(𝐿‘𝐴)) = (0_g‘𝑌))))
68	21, 36, 67	mpbir2and 713	1 ⊢ (𝜑 → (𝐿‘𝐴) ∈ (^◡(𝑂‘𝑇) “ {(0_g‘𝑌)}))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2108 Vcvv 3459 ∖ cdif 3923 {csn 4601 ↦ cmpt 5201 ^◡ccnv 5653 “ cima 5657 Fn wfn 6526 ⟶wf 6527 ‘cfv 6531 (class class class)co 7405 1c1 11130 − cmin 11466 / cdiv 11894 ℕcn 12240 2c2 12295 ℤcz 12588 ...cfz 13524 mod cmo 13886 ↑cexp 14079 ℙcprime 16690 Basecbs 17228 0_gc0g 17453 ↑_s cpws 17460 Mndcmnd 18712 Grpcgrp 18916 -_gcsg 18918 ._gcmg 19050 mulGrpcmgp 20100 1_rcur 20141 Ringcrg 20193 CRingccrg 20194 RingHom crh 20429 Domncdomn 20652 IDomncidom 20653 Fieldcfield 20690 ℤ_ringczring 21407 ℤRHomczrh 21460 ℤ/nℤczn 21463 var₁cv1 22111 Poly₁cpl1 22112 eval₁ce1 22252 deg₁cdg1 26011 /_L clgs 27257

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-ec 8721 df-qs 8725 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-q 12965 df-rp 13009 df-fz 13525 df-fzo 13672 df-fl 13809 df-mod 13887 df-seq 14020 df-exp 14080 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-pc 16857 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-imas 17522 df-qus 17523 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-nsg 19107 df-eqg 19108 df-ghm 19196 df-cntz 19300 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-nzr 20473 df-subrng 20506 df-subrg 20530 df-rlreg 20654 df-domn 20655 df-idom 20656 df-drng 20691 df-field 20692 df-lmod 20819 df-lss 20889 df-lsp 20929 df-sra 21131 df-rgmod 21132 df-lidl 21169 df-rsp 21170 df-2idl 21211 df-cnfld 21316 df-zring 21408 df-zrh 21464 df-zn 21467 df-assa 21813 df-asp 21814 df-ascl 21815 df-psr 21869 df-mvr 21870 df-mpl 21871 df-opsr 21873 df-evls 22032 df-evl 22033 df-psr1 22115 df-vr1 22116 df-ply1 22117 df-evl1 22254 df-lgs 27258

This theorem is referenced by: lgsqrlem4 27312

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