lgslem4 - Intuitionistic Logic Explorer

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Theorem lgslem4 16036

Description: Lemma for lgsfcl2 16039. (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 3351	. . . . . . . 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 13016	. . . . . . . 8 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → ((𝑃 − 1) / 2) ∈ ℕ)
5	4	adantl 277	. . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) / 2) ∈ ℕ)
6		prmdvdsexp 12904	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℕ) → (𝑃 ∥ (𝐴↑((𝑃 − 1) / 2)) ↔ 𝑃 ∥ 𝐴))
7	2, 3, 5, 6	syl3anc 1278	. . . . . 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 12888	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → 1 < 𝑃)
10	1, 9	syl 14	. . . . . 6 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 1 < 𝑃)
11	10	ad2antlr 493	. . . . 5 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → 1 < 𝑃)
12		p1modz1 12539	. . . . 5 ⊢ ((𝑃 ∥ (𝐴↑((𝑃 − 1) / 2)) ∧ 1 < 𝑃) → (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 1)
13	8, 11, 12	syl2anc 415	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 1)
14	13	oveq1d 6090	. . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (1 − 1))
15		1m1e0 9352	. . . 4 ⊢ (1 − 1) = 0
16		lgslem2.z	. . . . . 6 ⊢ 𝑍 = {𝑥 ∈ ℤ ∣ (abs‘𝑥) ≤ 1}
17	16	lgslem2 16034	. . . . 5 ⊢ (-1 ∈ 𝑍 ∧ 0 ∈ 𝑍 ∧ 1 ∈ 𝑍)
18	17	simp2i 1038	. . . 4 ⊢ 0 ∈ 𝑍
19	15, 18	eqeltri 2311	. . 3 ⊢ (1 − 1) ∈ 𝑍
20	14, 19	eqeltrdi 2329	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
21		lgslem1 16033	. . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2}) ∧ ¬ 𝑃 ∥ 𝐴) → (((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) ∈ {0, 2})
22		elpri 3728	. . . 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 6082	. . . . . 6 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 0 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (0 − 1))
24		df-neg 8490	. . . . . . 7 ⊢ -1 = (0 − 1)
25	17	simp1i 1037	. . . . . . 7 ⊢ -1 ∈ 𝑍
26	24, 25	eqeltrri 2312	. . . . . 6 ⊢ (0 − 1) ∈ 𝑍
27	23, 26	eqeltrdi 2329	. . . . 5 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 0 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
28		oveq1 6082	. . . . . 6 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 2 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) = (2 − 1))
29		2m1e1 9401	. . . . . . 7 ⊢ (2 − 1) = 1
30	17	simp3i 1039	. . . . . . 7 ⊢ 1 ∈ 𝑍
31	29, 30	eqeltri 2311	. . . . . 6 ⊢ (2 − 1) ∈ 𝑍
32	28, 31	eqeltrdi 2329	. . . . 5 ⊢ ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) = 2 → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
33	27, 32	jaoi 728	. . . 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 1234	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ¬ 𝑃 ∥ 𝐴) → ((((𝐴↑((𝑃 − 1) / 2)) + 1) mod 𝑃) − 1) ∈ 𝑍)
36		prmnn 12866	. . . . . 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 12543	. . . 4 ⊢ ((𝑃 ∈ ℕ ∧ 𝐴 ∈ ℤ) → DECID 𝑃 ∥ 𝐴)
40	38, 3, 39	syl2anc 415	. . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ (ℙ ∖ {2})) → DECID 𝑃 ∥ 𝐴)
41		exmiddc 848	. . 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 810	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 720 DECID wdc 846 ∧ w3a 1009 = wceq 1402 ∈ wcel 2209 {crab 2532 ∖ cdif 3217 {csn 3705 {cpr 3706 class class class wbr 4125 ‘cfv 5372 (class class class)co 6075 0cc0 8169 1c1 8170 + caddc 8172 < clt 8350 ≤ cle 8351 − cmin 8487 -cneg 8488 / cdiv 8992 ℕcn 9283 2c2 9334 ℤcz 9623 mod cmo 10737 ↑cexp 10953 abscabs 11741 ∥ cdvds 12532 ℙcprime 12863

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 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4241 ax-sep 4244 ax-nul 4254 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-iinf 4730 ax-cnex 8260 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-mulrcl 8268 ax-addcom 8269 ax-mulcom 8270 ax-addass 8271 ax-mulass 8272 ax-distr 8273 ax-i2m1 8274 ax-0lt1 8275 ax-1rid 8276 ax-0id 8277 ax-rnegex 8278 ax-precex 8279 ax-cnre 8280 ax-pre-ltirr 8281 ax-pre-ltwlin 8282 ax-pre-lttrn 8283 ax-pre-apti 8284 ax-pre-ltadd 8285 ax-pre-mulgt0 8286 ax-pre-mulext 8287 ax-arch 8288 ax-caucvg 8289

This theorem depends on definitions: df-bi 117 df-stab 843 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-xor 1425 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-if 3636 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-int 3966 df-iun 4009 df-br 4126 df-opab 4188 df-mpt 4189 df-tr 4225 df-id 4433 df-po 4436 df-iso 4437 df-iord 4506 df-on 4508 df-ilim 4509 df-suc 4511 df-iom 4733 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-ima 4782 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-f1 5377 df-fo 5378 df-f1o 5379 df-fv 5380 df-isom 5381 df-riota 6028 df-ov 6078 df-oprab 6079 df-mpo 6080 df-1st 6364 df-2nd 6365 df-recs 6566 df-irdg 6631 df-frec 6652 df-1o 6677 df-2o 6678 df-oadd 6681 df-er 6797 df-en 7013 df-dom 7014 df-fin 7015 df-sup 7314 df-pnf 8352 df-mnf 8353 df-xr 8354 df-ltxr 8355 df-le 8356 df-sub 8489 df-neg 8490 df-reap 8893 df-ap 8900 df-div 8993 df-inn 9284 df-2 9342 df-3 9343 df-4 9344 df-n0 9543 df-z 9624 df-uz 9901 df-q 9999 df-rp 10034 df-fz 10391 df-fzo 10528 df-fl 10683 df-mod 10738 df-seqfrec 10863 df-exp 10954 df-ihash 11193 df-cj 11585 df-re 11586 df-im 11587 df-rsqrt 11742 df-abs 11743 df-clim 12023 df-proddc 12296 df-dvds 12533 df-gcd 12709 df-prm 12864 df-phi 12967

This theorem is referenced by: lgsfcl2 16039

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