lgslem4 - Intuitionistic Logic Explorer

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Theorem lgslem4 15328

Description: Lemma for lgsfcl2 15331. (Contributed by Mario Carneiro, 4-Feb-2015.) (Proof shortened by AV, 19-Mar-2022.)

**Hypothesis**
Ref	Expression
lgslem2.z	⊢ 𝑍 = {𝑥 ∈ ℤ ∣ (abs‘𝑥) ≤ 1}

**Assertion**
Ref	Expression
lgslem4	⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)

Distinct variable group: 𝑥,𝐴 Allowed substitution hints: 𝑃(𝑥) 𝑍(𝑥)

**Proof of Theorem lgslem4**
Step	Hyp	Ref	Expression
1		eldifi 3286	. . . . . . . 8 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℙ)
2	1	adantl 277	. . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑃 ∈ ℙ)
3		simpl 109	. . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝐴 ∈ ℤ)
4		oddprm 12453	. . . . . . . 8 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → ((𝑃 − 1) / 2) ∈ ℕ)
5	4	adantl 277	. . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) / 2) ∈ ℕ)
6		prmdvdsexp 12341	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℕ) → (𝑃 ∥ (𝐴↑((𝑃 − 1) / 2)) ↔ 𝑃 ∥ 𝐴))
7	2, 3, 5, 6	syl3anc 1249	. . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 ∥ (𝐴↑((𝑃 − 1) / 2)) ↔ 𝑃 ∥ 𝐴))
8	7	biimpar 297	. . . . 5 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → 𝑃 ∥ (𝐴↑((𝑃 − 1) / 2)))
9		prmgt1 12325	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → 1 < 𝑃)
10	1, 9	syl 14	. . . . . 6 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 1 < 𝑃)
11	10	ad2antlr 489	. . . . 5 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → 1 < 𝑃)
12		p1modz1 11976	. . . . 5 ⊢ ((𝑃 ∥ (𝐴↑((𝑃 − 1) / 2)) ∧ 1 < 𝑃) → (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 1)
13	8, 11, 12	syl2anc 411	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 1)
14	13	oveq1d 5940	. . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (1 − 1))
15		1m1e0 9076	. . . 4 ⊢ (1 − 1) = 0
16		lgslem2.z	. . . . . 6 ⊢ 𝑍 = {𝑥 ∈ ℤ ∣ (abs‘𝑥) ≤ 1}
17	16	lgslem2 15326	. . . . 5 ⊢ (-1 ∈ 𝑍 ∧ 0 ∈ 𝑍 ∧ 1 ∈ 𝑍)
18	17	simp2i 1009	. . . 4 ⊢ 0 ∈ 𝑍
19	15, 18	eqeltri 2269	. . 3 ⊢ (1 − 1) ∈ 𝑍
20	14, 19	eqeltrdi 2287	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
21		lgslem1 15325	. . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2}) ∧ ¬ 𝑃 ∥ 𝐴) → (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) ∈ {0, 2})
22		elpri 3646	. . . 4 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) ∈ {0, 2} → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 0 ∨ (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 2))
23		oveq1 5932	. . . . . 6 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 0 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (0 − 1))
24		df-neg 8217	. . . . . . 7 ⊢ -1 = (0 − 1)
25	17	simp1i 1008	. . . . . . 7 ⊢ -1 ∈ 𝑍
26	24, 25	eqeltrri 2270	. . . . . 6 ⊢ (0 − 1) ∈ 𝑍
27	23, 26	eqeltrdi 2287	. . . . 5 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 0 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
28		oveq1 5932	. . . . . 6 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 2 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (2 − 1))
29		2m1e1 9125	. . . . . . 7 ⊢ (2 − 1) = 1
30	17	simp3i 1010	. . . . . . 7 ⊢ 1 ∈ 𝑍
31	29, 30	eqeltri 2269	. . . . . 6 ⊢ (2 − 1) ∈ 𝑍
32	28, 31	eqeltrdi 2287	. . . . 5 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 2 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
33	27, 32	jaoi 717	. . . 4 ⊢ (((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 0 ∨ (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 2) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
34	21, 22, 33	3syl 17	. . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2}) ∧ ¬ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
35	34	3expa 1205	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ¬ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
36		prmnn 12303	. . . . . 6 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
37	1, 36	syl 14	. . . . 5 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℕ)
38	37	adantl 277	. . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑃 ∈ ℕ)
39		dvdsdc 11980	. . . 4 ⊢ ((𝑃 ∈ ℕ ∧ 𝐴 ∈ ℤ) → DECID 𝑃 ∥ 𝐴)
40	38, 3, 39	syl2anc 411	. . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → DECID 𝑃 ∥ 𝐴)
41		exmiddc 837	. . 3 ⊢ (DECID 𝑃 ∥ 𝐴 → (𝑃 ∥ 𝐴 ∨ ¬ 𝑃 ∥ 𝐴))
42	40, 41	syl 14	. 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 ∥ 𝐴 ∨ ¬ 𝑃 ∥ 𝐴))
43	20, 35, 42	mpjaodan 799	1 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)

Colors of variables: wff set class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 ∨ wo 709 DECID wdc 835 ∧ w3a 980 = wceq 1364 ∈ wcel 2167 {crab 2479 ∖ cdif 3154 {csn 3623 {cpr 3624 class class class wbr 4034 ‘cfv 5259 (class class class)co 5925 0cc0 7896 1c1 7897 + caddc 7899 < clt 8078 ≤ cle 8079 − cmin 8214 -cneg 8215 / cdiv 8716 ℕcn 9007 2c2 9058 ℤcz 9343 mod cmo 10431 ↑cexp 10647 abscabs 11179 ∥ cdvds 11969 ℙcprime 12300

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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4149 ax-sep 4152 ax-nul 4160 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-setind 4574 ax-iinf 4625 ax-cnex 7987 ax-resscn 7988 ax-1cn 7989 ax-1re 7990 ax-icn 7991 ax-addcl 7992 ax-addrcl 7993 ax-mulcl 7994 ax-mulrcl 7995 ax-addcom 7996 ax-mulcom 7997 ax-addass 7998 ax-mulass 7999 ax-distr 8000 ax-i2m1 8001 ax-0lt1 8002 ax-1rid 8003 ax-0id 8004 ax-rnegex 8005 ax-precex 8006 ax-cnre 8007 ax-pre-ltirr 8008 ax-pre-ltwlin 8009 ax-pre-lttrn 8010 ax-pre-apti 8011 ax-pre-ltadd 8012 ax-pre-mulgt0 8013 ax-pre-mulext 8014 ax-arch 8015 ax-caucvg 8016

This theorem depends on definitions: df-bi 117 df-stab 832 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-xor 1387 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-reu 2482 df-rmo 2483 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3452 df-if 3563 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-int 3876 df-iun 3919 df-br 4035 df-opab 4096 df-mpt 4097 df-tr 4133 df-id 4329 df-po 4332 df-iso 4333 df-iord 4402 df-on 4404 df-ilim 4405 df-suc 4407 df-iom 4628 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-rn 4675 df-res 4676 df-ima 4677 df-iota 5220 df-fun 5261 df-fn 5262 df-f 5263 df-f1 5264 df-fo 5265 df-f1o 5266 df-fv 5267 df-isom 5268 df-riota 5880 df-ov 5928 df-oprab 5929 df-mpo 5930 df-1st 6207 df-2nd 6208 df-recs 6372 df-irdg 6437 df-frec 6458 df-1o 6483 df-2o 6484 df-oadd 6487 df-er 6601 df-en 6809 df-dom 6810 df-fin 6811 df-sup 7059 df-pnf 8080 df-mnf 8081 df-xr 8082 df-ltxr 8083 df-le 8084 df-sub 8216 df-neg 8217 df-reap 8619 df-ap 8626 df-div 8717 df-inn 9008 df-2 9066 df-3 9067 df-4 9068 df-n0 9267 df-z 9344 df-uz 9619 df-q 9711 df-rp 9746 df-fz 10101 df-fzo 10235 df-fl 10377 df-mod 10432 df-seqfrec 10557 df-exp 10648 df-ihash 10885 df-cj 11024 df-re 11025 df-im 11026 df-rsqrt 11180 df-abs 11181 df-clim 11461 df-proddc 11733 df-dvds 11970 df-gcd 12146 df-prm 12301 df-phi 12404

This theorem is referenced by: lgsfcl2 15331

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