lgslem4 - Intuitionistic Logic Explorer

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Theorem lgslem4 15731

Description: Lemma for lgsfcl2 15734. (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 3329	. . . . . . . 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 12831	. . . . . . . 8 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → ((𝑃 − 1) / 2) ∈ ℕ)
5	4	adantl 277	. . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) / 2) ∈ ℕ)
6		prmdvdsexp 12719	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℕ) → (𝑃 ∥ (𝐴↑((𝑃 − 1) / 2)) ↔ 𝑃 ∥ 𝐴))
7	2, 3, 5, 6	syl3anc 1273	. . . . . 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 12703	. . . . . . 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 12354	. . . . 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 6032	. . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (1 − 1))
15		1m1e0 9211	. . . 4 ⊢ (1 − 1) = 0
16		lgslem2.z	. . . . . 6 ⊢ 𝑍 = {𝑥 ∈ ℤ ∣ (abs‘𝑥) ≤ 1}
17	16	lgslem2 15729	. . . . 5 ⊢ (-1 ∈ 𝑍 ∧ 0 ∈ 𝑍 ∧ 1 ∈ 𝑍)
18	17	simp2i 1033	. . . 4 ⊢ 0 ∈ 𝑍
19	15, 18	eqeltri 2304	. . 3 ⊢ (1 − 1) ∈ 𝑍
20	14, 19	eqeltrdi 2322	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
21		lgslem1 15728	. . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2}) ∧ ¬ 𝑃 ∥ 𝐴) → (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) ∈ {0, 2})
22		elpri 3692	. . . 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 6024	. . . . . 6 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 0 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (0 − 1))
24		df-neg 8352	. . . . . . 7 ⊢ -1 = (0 − 1)
25	17	simp1i 1032	. . . . . . 7 ⊢ -1 ∈ 𝑍
26	24, 25	eqeltrri 2305	. . . . . 6 ⊢ (0 − 1) ∈ 𝑍
27	23, 26	eqeltrdi 2322	. . . . 5 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 0 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
28		oveq1 6024	. . . . . 6 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 2 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (2 − 1))
29		2m1e1 9260	. . . . . . 7 ⊢ (2 − 1) = 1
30	17	simp3i 1034	. . . . . . 7 ⊢ 1 ∈ 𝑍
31	29, 30	eqeltri 2304	. . . . . 6 ⊢ (2 − 1) ∈ 𝑍
32	28, 31	eqeltrdi 2322	. . . . 5 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 2 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
33	27, 32	jaoi 723	. . . 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 1229	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ¬ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
36		prmnn 12681	. . . . . 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 12358	. . . 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 843	. . 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 805	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 715 DECID wdc 841 ∧ w3a 1004 = wceq 1397 ∈ wcel 2202 {crab 2514 ∖ cdif 3197 {csn 3669 {cpr 3670 class class class wbr 4088 ‘cfv 5326 (class class class)co 6017 0cc0 8031 1c1 8032 + caddc 8034 < clt 8213 ≤ cle 8214 − cmin 8349 -cneg 8350 / cdiv 8851 ℕcn 9142 2c2 9193 ℤcz 9478 mod cmo 10583 ↑cexp 10799 abscabs 11557 ∥ cdvds 12347 ℙcprime 12678

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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-nul 4215 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-iinf 4686 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-mulrcl 8130 ax-addcom 8131 ax-mulcom 8132 ax-addass 8133 ax-mulass 8134 ax-distr 8135 ax-i2m1 8136 ax-0lt1 8137 ax-1rid 8138 ax-0id 8139 ax-rnegex 8140 ax-precex 8141 ax-cnre 8142 ax-pre-ltirr 8143 ax-pre-ltwlin 8144 ax-pre-lttrn 8145 ax-pre-apti 8146 ax-pre-ltadd 8147 ax-pre-mulgt0 8148 ax-pre-mulext 8149 ax-arch 8150 ax-caucvg 8151

This theorem depends on definitions: df-bi 117 df-stab 838 df-dc 842 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-xor 1420 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rmo 2518 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-if 3606 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-tr 4188 df-id 4390 df-po 4393 df-iso 4394 df-iord 4463 df-on 4465 df-ilim 4466 df-suc 4468 df-iom 4689 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-isom 5335 df-riota 5970 df-ov 6020 df-oprab 6021 df-mpo 6022 df-1st 6302 df-2nd 6303 df-recs 6470 df-irdg 6535 df-frec 6556 df-1o 6581 df-2o 6582 df-oadd 6585 df-er 6701 df-en 6909 df-dom 6910 df-fin 6911 df-sup 7182 df-pnf 8215 df-mnf 8216 df-xr 8217 df-ltxr 8218 df-le 8219 df-sub 8351 df-neg 8352 df-reap 8754 df-ap 8761 df-div 8852 df-inn 9143 df-2 9201 df-3 9202 df-4 9203 df-n0 9402 df-z 9479 df-uz 9755 df-q 9853 df-rp 9888 df-fz 10243 df-fzo 10377 df-fl 10529 df-mod 10584 df-seqfrec 10709 df-exp 10800 df-ihash 11037 df-cj 11402 df-re 11403 df-im 11404 df-rsqrt 11558 df-abs 11559 df-clim 11839 df-proddc 12111 df-dvds 12348 df-gcd 12524 df-prm 12679 df-phi 12782

This theorem is referenced by: lgsfcl2 15734

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