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Theorem lgsqrlem3 27299

Description: Lemma for lgsqr 27302. (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 3951	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 ∈ ℙ)
3		lgsqr.y	. . . . . . . . . 10 ⊢ 𝑌 = (ℤ/nℤ‘𝑃)
4	3	znfld 21498	. . . . . . . . 9 ⊢ (𝑃 ∈ ℙ → 𝑌 ∈ Field)
5	2, 4	syl 17	. . . . . . . 8 ⊢ (𝜑 → 𝑌 ∈ Field)
6		fldidom 21262	. . . . . . . 8 ⊢ (𝑌 ∈ Field → 𝑌 ∈ IDomn)
7	5, 6	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ IDomn)
8		isidom 21258	. . . . . . . 8 ⊢ (𝑌 ∈ IDomn ↔ (𝑌 ∈ CRing ∧ 𝑌 ∈ Domn))
9	8	simplbi 496	. . . . . . 7 ⊢ (𝑌 ∈ IDomn → 𝑌 ∈ CRing)
10	7, 9	syl 17	. . . . . 6 ⊢ (𝜑 → 𝑌 ∈ CRing)
11		crngring 20189	. . . . . 6 ⊢ (𝑌 ∈ CRing → 𝑌 ∈ Ring)
12	10, 11	syl 17	. . . . 5 ⊢ (𝜑 → 𝑌 ∈ Ring)
13		lgsqr.l	. . . . . 6 ⊢ 𝐿 = (ℤRHom‘𝑌)
14	13	zrhrhm 21441	. . . . 5 ⊢ (𝑌 ∈ Ring → 𝐿 ∈ (ℤ_ring RingHom 𝑌))
15	12, 14	syl 17	. . . 4 ⊢ (𝜑 → 𝐿 ∈ (ℤ_ring RingHom 𝑌))
16		zringbas 21383	. . . . 5 ⊢ ℤ = (Base‘ℤ_ring)
17		eqid 2725	. . . . 5 ⊢ (Base‘𝑌) = (Base‘𝑌)
18	16, 17	rhmf 20428	. . . 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 7090	. 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 27267	. . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝐴 /_L 𝑃) mod 𝑃) = ((𝐴↑((𝑃 − 1) / 2)) mod 𝑃))
32	20, 1, 31	syl2anc 582	. . . 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 7431	. . . 4 ⊢ (𝜑 → ((𝐴 /_L 𝑃) mod 𝑃) = (1 mod 𝑃))
35	32, 34	eqtr3d 2767	. . 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 27297	. 2 ⊢ (𝜑 → ((𝑂‘𝑇)‘(𝐿‘𝐴)) = (0_g‘𝑌))
37		eqid 2725	. . . . 5 ⊢ (𝑌 ↑_s (Base‘𝑌)) = (𝑌 ↑_s (Base‘𝑌))
38		eqid 2725	. . . . 5 ⊢ (Base‘(𝑌 ↑_s (Base‘𝑌))) = (Base‘(𝑌 ↑_s (Base‘𝑌)))
39		fvexd 6907	. . . . 5 ⊢ (𝜑 → (Base‘𝑌) ∈ V)
40	25, 22, 37, 17	evl1rhm 22260	. . . . . . . 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 20428	. . . . . . 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 22175	. . . . . . . . . 10 ⊢ (𝑌 ∈ Ring → 𝑆 ∈ Ring)
45	12, 44	syl 17	. . . . . . . . 9 ⊢ (𝜑 → 𝑆 ∈ Ring)
46		ringgrp 20182	. . . . . . . . 9 ⊢ (𝑆 ∈ Ring → 𝑆 ∈ Grp)
47	45, 46	syl 17	. . . . . . . 8 ⊢ (𝜑 → 𝑆 ∈ Grp)
48		eqid 2725	. . . . . . . . . 10 ⊢ (mulGrp‘𝑆) = (mulGrp‘𝑆)
49	48, 23	mgpbas 20084	. . . . . . . . 9 ⊢ 𝐵 = (Base‘(mulGrp‘𝑆))
50	48	ringmgp 20183	. . . . . . . . . 10 ⊢ (𝑆 ∈ Ring → (mulGrp‘𝑆) ∈ Mnd)
51	45, 50	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (mulGrp‘𝑆) ∈ Mnd)
52		oddprm 16778	. . . . . . . . . . 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 22145	. . . . . . . . . 10 ⊢ (𝑌 ∈ Ring → 𝑋 ∈ 𝐵)
56	12, 55	syl 17	. . . . . . . . 9 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
57	49, 26, 51, 54, 56	mulgnn0cld 19054	. . . . . . . 8 ⊢ (𝜑 → (((𝑃 − 1) / 2) ↑ 𝑋) ∈ 𝐵)
58	23, 29	ringidcl 20206	. . . . . . . . 9 ⊢ (𝑆 ∈ Ring → 1 ∈ 𝐵)
59	45, 58	syl 17	. . . . . . . 8 ⊢ (𝜑 → 1 ∈ 𝐵)
60	23, 28	grpsubcl 18980	. . . . . . . 8 ⊢ ((𝑆 ∈ Grp ∧ (((𝑃 − 1) / 2) ↑ 𝑋) ∈ 𝐵 ∧ 1 ∈ 𝐵) → ((((𝑃 − 1) / 2) ↑ 𝑋) − 1 ) ∈ 𝐵)
61	47, 57, 59, 60	syl3anc 1368	. . . . . . 7 ⊢ (𝜑 → ((((𝑃 − 1) / 2) ↑ 𝑋) − 1 ) ∈ 𝐵)
62	30, 61	eqeltrid 2829	. . . . . 6 ⊢ (𝜑 → 𝑇 ∈ 𝐵)
63	43, 62	ffvelcdmd 7090	. . . . 5 ⊢ (𝜑 → (𝑂‘𝑇) ∈ (Base‘(𝑌 ↑_s (Base‘𝑌))))
64	37, 17, 38, 5, 39, 63	pwselbas 17470	. . . 4 ⊢ (𝜑 → (𝑂‘𝑇):(Base‘𝑌)⟶(Base‘𝑌))
65	64	ffnd 6718	. . 3 ⊢ (𝜑 → (𝑂‘𝑇) Fn (Base‘𝑌))
66		fniniseg 7064	. . 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 711	1 ⊢ (𝜑 → (𝐿‘𝐴) ∈ (^◡(𝑂‘𝑇) “ {(0_g‘𝑌)}))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 = wceq 1533 ∈ wcel 2098 Vcvv 3463 ∖ cdif 3936 {csn 4624 ↦ cmpt 5226 ^◡ccnv 5671 “ cima 5675 Fn wfn 6538 ⟶wf 6539 ‘cfv 6543 (class class class)co 7416 1c1 11139 − cmin 11474 / cdiv 11901 ℕcn 12242 2c2 12297 ℤcz 12588 ...cfz 13516 mod cmo 13866 ↑cexp 14058 ℙcprime 16641 Basecbs 17179 0_gc0g 17420 ↑_s cpws 17427 Mndcmnd 18693 Grpcgrp 18894 -_gcsg 18896 ._gcmg 19027 mulGrpcmgp 20078 1_rcur 20125 Ringcrg 20177 CRingccrg 20178 RingHom crh 20412 Fieldcfield 20629 Domncdomn 21231 IDomncidom 21232 ℤ_ringczring 21376 ℤRHomczrh 21429 ℤ/nℤczn 21432 var₁cv1 22103 Poly₁cpl1 22104 eval₁ce1 22242 deg₁ cdg1 26005 /_L clgs 27245

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5280 ax-sep 5294 ax-nul 5301 ax-pow 5359 ax-pr 5423 ax-un 7738 ax-cnex 11194 ax-resscn 11195 ax-1cn 11196 ax-icn 11197 ax-addcl 11198 ax-addrcl 11199 ax-mulcl 11200 ax-mulrcl 11201 ax-mulcom 11202 ax-addass 11203 ax-mulass 11204 ax-distr 11205 ax-i2m1 11206 ax-1ne0 11207 ax-1rid 11208 ax-rnegex 11209 ax-rrecex 11210 ax-cnre 11211 ax-pre-lttri 11212 ax-pre-lttrn 11213 ax-pre-ltadd 11214 ax-pre-mulgt0 11215 ax-pre-sup 11216 ax-addf 11217 ax-mulf 11218

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3769 df-csb 3885 df-dif 3942 df-un 3944 df-in 3946 df-ss 3956 df-pss 3959 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-tp 4629 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-iin 4994 df-br 5144 df-opab 5206 df-mpt 5227 df-tr 5261 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-se 5628 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7372 df-ov 7419 df-oprab 7420 df-mpo 7421 df-of 7682 df-ofr 7683 df-om 7869 df-1st 7991 df-2nd 7992 df-supp 8164 df-tpos 8230 df-frecs 8285 df-wrecs 8316 df-recs 8390 df-rdg 8429 df-1o 8485 df-2o 8486 df-oadd 8489 df-er 8723 df-ec 8725 df-qs 8729 df-map 8845 df-pm 8846 df-ixp 8915 df-en 8963 df-dom 8964 df-sdom 8965 df-fin 8966 df-fsupp 9386 df-sup 9465 df-inf 9466 df-oi 9533 df-dju 9924 df-card 9962 df-pnf 11280 df-mnf 11281 df-xr 11282 df-ltxr 11283 df-le 11284 df-sub 11476 df-neg 11477 df-div 11902 df-nn 12243 df-2 12305 df-3 12306 df-4 12307 df-5 12308 df-6 12309 df-7 12310 df-8 12311 df-9 12312 df-n0 12503 df-xnn0 12575 df-z 12589 df-dec 12708 df-uz 12853 df-q 12963 df-rp 13007 df-fz 13517 df-fzo 13660 df-fl 13789 df-mod 13867 df-seq 13999 df-exp 14059 df-hash 14322 df-cj 15078 df-re 15079 df-im 15080 df-sqrt 15214 df-abs 15215 df-dvds 16231 df-gcd 16469 df-prm 16642 df-phi 16734 df-pc 16805 df-struct 17115 df-sets 17132 df-slot 17150 df-ndx 17162 df-base 17180 df-ress 17209 df-plusg 17245 df-mulr 17246 df-starv 17247 df-sca 17248 df-vsca 17249 df-ip 17250 df-tset 17251 df-ple 17252 df-ds 17254 df-unif 17255 df-hom 17256 df-cco 17257 df-0g 17422 df-gsum 17423 df-prds 17428 df-pws 17430 df-imas 17489 df-qus 17490 df-mre 17565 df-mrc 17566 df-acs 17568 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-mhm 18739 df-submnd 18740 df-grp 18897 df-minusg 18898 df-sbg 18899 df-mulg 19028 df-subg 19082 df-nsg 19083 df-eqg 19084 df-ghm 19172 df-cntz 19272 df-cmn 19741 df-abl 19742 df-mgp 20079 df-rng 20097 df-ur 20126 df-srg 20131 df-ring 20179 df-cring 20180 df-oppr 20277 df-dvdsr 20300 df-unit 20301 df-invr 20331 df-dvr 20344 df-rhm 20415 df-nzr 20456 df-subrng 20487 df-subrg 20512 df-drng 20630 df-field 20631 df-lmod 20749 df-lss 20820 df-lsp 20860 df-sra 21062 df-rgmod 21063 df-lidl 21108 df-rsp 21109 df-2idl 21148 df-rlreg 21234 df-domn 21235 df-idom 21236 df-cnfld 21284 df-zring 21377 df-zrh 21433 df-zn 21436 df-assa 21791 df-asp 21792 df-ascl 21793 df-psr 21846 df-mvr 21847 df-mpl 21848 df-opsr 21850 df-evls 22025 df-evl 22026 df-psr1 22107 df-vr1 22108 df-ply1 22109 df-evl1 22244 df-lgs 27246

This theorem is referenced by: lgsqrlem4 27300

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