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Theorem 2lgslem1a1 25647

Description: Lemma 1 for 2lgslem1a 25649. (Contributed by AV, 16-Jun-2021.)

**Assertion**
Ref	Expression
2lgslem1a1	⊢ ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → ∀𝑖 ∈ (1...((𝑃 − 1) / 2))(𝑖 · 2) = ((𝑖 · 2) mod 𝑃))

Distinct variable group: 𝑃,𝑖

**Proof of Theorem 2lgslem1a1**
Step	Hyp	Ref	Expression
1		nnrp 12250	. . . . . 6 ⊢ (𝑃 ∈ ℕ → 𝑃 ∈ ℝ⁺)
2	1	adantr 481	. . . . 5 ⊢ ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → 𝑃 ∈ ℝ⁺)
3		elfzelz 12758	. . . . . 6 ⊢ (𝑖 ∈ (1...((𝑃 − 1) / 2)) → 𝑖 ∈ ℤ)
4		zre 11833	. . . . . . 7 ⊢ (𝑖 ∈ ℤ → 𝑖 ∈ ℝ)
5		2re 11559	. . . . . . . 8 ⊢ 2 ∈ ℝ
6	5	a1i 11	. . . . . . 7 ⊢ (𝑖 ∈ ℤ → 2 ∈ ℝ)
7	4, 6	remulcld 10517	. . . . . 6 ⊢ (𝑖 ∈ ℤ → (𝑖 · 2) ∈ ℝ)
8	3, 7	syl 17	. . . . 5 ⊢ (𝑖 ∈ (1...((𝑃 − 1) / 2)) → (𝑖 · 2) ∈ ℝ)
9	2, 8	anim12ci 613	. . . 4 ⊢ (((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) ∧ 𝑖 ∈ (1...((𝑃 − 1) / 2))) → ((𝑖 · 2) ∈ ℝ ∧ 𝑃 ∈ ℝ⁺))
10		elfznn 12786	. . . . . 6 ⊢ (𝑖 ∈ (1...((𝑃 − 1) / 2)) → 𝑖 ∈ ℕ)
11		nnre 11493	. . . . . . 7 ⊢ (𝑖 ∈ ℕ → 𝑖 ∈ ℝ)
12		nnnn0 11752	. . . . . . . 8 ⊢ (𝑖 ∈ ℕ → 𝑖 ∈ ℕ₀)
13	12	nn0ge0d 11806	. . . . . . 7 ⊢ (𝑖 ∈ ℕ → 0 ≤ 𝑖)
14		0le2 11587	. . . . . . . . 9 ⊢ 0 ≤ 2
15	5, 14	pm3.2i 471	. . . . . . . 8 ⊢ (2 ∈ ℝ ∧ 0 ≤ 2)
16	15	a1i 11	. . . . . . 7 ⊢ (𝑖 ∈ ℕ → (2 ∈ ℝ ∧ 0 ≤ 2))
17		mulge0 11006	. . . . . . 7 ⊢ (((𝑖 ∈ ℝ ∧ 0 ≤ 𝑖) ∧ (2 ∈ ℝ ∧ 0 ≤ 2)) → 0 ≤ (𝑖 · 2))
18	11, 13, 16, 17	syl21anc 834	. . . . . 6 ⊢ (𝑖 ∈ ℕ → 0 ≤ (𝑖 · 2))
19	10, 18	syl 17	. . . . 5 ⊢ (𝑖 ∈ (1...((𝑃 − 1) / 2)) → 0 ≤ (𝑖 · 2))
20	19	adantl 482	. . . 4 ⊢ (((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) ∧ 𝑖 ∈ (1...((𝑃 − 1) / 2))) → 0 ≤ (𝑖 · 2))
21		elfz2 12749	. . . . . 6 ⊢ (𝑖 ∈ (1...((𝑃 − 1) / 2)) ↔ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) ∧ (1 ≤ 𝑖 ∧ 𝑖 ≤ ((𝑃 − 1) / 2))))
22	4	3ad2ant3 1128	. . . . . . . . . 10 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → 𝑖 ∈ ℝ)
23		zre 11833	. . . . . . . . . . 11 ⊢ (((𝑃 − 1) / 2) ∈ ℤ → ((𝑃 − 1) / 2) ∈ ℝ)
24	23	3ad2ant2 1127	. . . . . . . . . 10 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → ((𝑃 − 1) / 2) ∈ ℝ)
25		2pos 11588	. . . . . . . . . . . 12 ⊢ 0 < 2
26	5, 25	pm3.2i 471	. . . . . . . . . . 11 ⊢ (2 ∈ ℝ ∧ 0 < 2)
27	26	a1i 11	. . . . . . . . . 10 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → (2 ∈ ℝ ∧ 0 < 2))
28		lemul1 11340	. . . . . . . . . 10 ⊢ ((𝑖 ∈ ℝ ∧ ((𝑃 − 1) / 2) ∈ ℝ ∧ (2 ∈ ℝ ∧ 0 < 2)) → (𝑖 ≤ ((𝑃 − 1) / 2) ↔ (𝑖 · 2) ≤ (((𝑃 − 1) / 2) · 2)))
29	22, 24, 27, 28	syl3anc 1364	. . . . . . . . 9 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → (𝑖 ≤ ((𝑃 − 1) / 2) ↔ (𝑖 · 2) ≤ (((𝑃 − 1) / 2) · 2)))
30		nncn 11494	. . . . . . . . . . . . . . . . 17 ⊢ (𝑃 ∈ ℕ → 𝑃 ∈ ℂ)
31		peano2cnm 10800	. . . . . . . . . . . . . . . . 17 ⊢ (𝑃 ∈ ℂ → (𝑃 − 1) ∈ ℂ)
32	30, 31	syl 17	. . . . . . . . . . . . . . . 16 ⊢ (𝑃 ∈ ℕ → (𝑃 − 1) ∈ ℂ)
33		2cnd 11563	. . . . . . . . . . . . . . . 16 ⊢ (𝑃 ∈ ℕ → 2 ∈ ℂ)
34		2ne0 11589	. . . . . . . . . . . . . . . . 17 ⊢ 2 ≠ 0
35	34	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (𝑃 ∈ ℕ → 2 ≠ 0)
36	32, 33, 35	divcan1d 11265	. . . . . . . . . . . . . . 15 ⊢ (𝑃 ∈ ℕ → (((𝑃 − 1) / 2) · 2) = (𝑃 − 1))
37	36	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → (((𝑃 − 1) / 2) · 2) = (𝑃 − 1))
38	37	adantl 482	. . . . . . . . . . . . 13 ⊢ (((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) ∧ (𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃)) → (((𝑃 − 1) / 2) · 2) = (𝑃 − 1))
39	38	breq2d 4974	. . . . . . . . . . . 12 ⊢ (((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) ∧ (𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃)) → ((𝑖 · 2) ≤ (((𝑃 − 1) / 2) · 2) ↔ (𝑖 · 2) ≤ (𝑃 − 1)))
40		id 22	. . . . . . . . . . . . . . . 16 ⊢ (𝑖 ∈ ℤ → 𝑖 ∈ ℤ)
41		2z 11863	. . . . . . . . . . . . . . . . 17 ⊢ 2 ∈ ℤ
42	41	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (𝑖 ∈ ℤ → 2 ∈ ℤ)
43	40, 42	zmulcld 11942	. . . . . . . . . . . . . . 15 ⊢ (𝑖 ∈ ℤ → (𝑖 · 2) ∈ ℤ)
44	43	3ad2ant3 1128	. . . . . . . . . . . . . 14 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → (𝑖 · 2) ∈ ℤ)
45		nnz 11853	. . . . . . . . . . . . . . 15 ⊢ (𝑃 ∈ ℕ → 𝑃 ∈ ℤ)
46	45	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → 𝑃 ∈ ℤ)
47		zltlem1 11884	. . . . . . . . . . . . . 14 ⊢ (((𝑖 · 2) ∈ ℤ ∧ 𝑃 ∈ ℤ) → ((𝑖 · 2) < 𝑃 ↔ (𝑖 · 2) ≤ (𝑃 − 1)))
48	44, 46, 47	syl2an 595	. . . . . . . . . . . . 13 ⊢ (((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) ∧ (𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃)) → ((𝑖 · 2) < 𝑃 ↔ (𝑖 · 2) ≤ (𝑃 − 1)))
49	48	biimprd 249	. . . . . . . . . . . 12 ⊢ (((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) ∧ (𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃)) → ((𝑖 · 2) ≤ (𝑃 − 1) → (𝑖 · 2) < 𝑃))
50	39, 49	sylbid 241	. . . . . . . . . . 11 ⊢ (((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) ∧ (𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃)) → ((𝑖 · 2) ≤ (((𝑃 − 1) / 2) · 2) → (𝑖 · 2) < 𝑃))
51	50	ex 413	. . . . . . . . . 10 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → ((𝑖 · 2) ≤ (((𝑃 − 1) / 2) · 2) → (𝑖 · 2) < 𝑃)))
52	51	com23 86	. . . . . . . . 9 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → ((𝑖 · 2) ≤ (((𝑃 − 1) / 2) · 2) → ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → (𝑖 · 2) < 𝑃)))
53	29, 52	sylbid 241	. . . . . . . 8 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → (𝑖 ≤ ((𝑃 − 1) / 2) → ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → (𝑖 · 2) < 𝑃)))
54	53	a1d 25	. . . . . . 7 ⊢ ((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) → (1 ≤ 𝑖 → (𝑖 ≤ ((𝑃 − 1) / 2) → ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → (𝑖 · 2) < 𝑃))))
55	54	imp32 419	. . . . . 6 ⊢ (((1 ∈ ℤ ∧ ((𝑃 − 1) / 2) ∈ ℤ ∧ 𝑖 ∈ ℤ) ∧ (1 ≤ 𝑖 ∧ 𝑖 ≤ ((𝑃 − 1) / 2))) → ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → (𝑖 · 2) < 𝑃))
56	21, 55	sylbi 218	. . . . 5 ⊢ (𝑖 ∈ (1...((𝑃 − 1) / 2)) → ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → (𝑖 · 2) < 𝑃))
57	56	impcom 408	. . . 4 ⊢ (((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) ∧ 𝑖 ∈ (1...((𝑃 − 1) / 2))) → (𝑖 · 2) < 𝑃)
58		modid 13114	. . . 4 ⊢ ((((𝑖 · 2) ∈ ℝ ∧ 𝑃 ∈ ℝ⁺) ∧ (0 ≤ (𝑖 · 2) ∧ (𝑖 · 2) < 𝑃)) → ((𝑖 · 2) mod 𝑃) = (𝑖 · 2))
59	9, 20, 57, 58	syl12anc 833	. . 3 ⊢ (((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) ∧ 𝑖 ∈ (1...((𝑃 − 1) / 2))) → ((𝑖 · 2) mod 𝑃) = (𝑖 · 2))
60	59	eqcomd 2801	. 2 ⊢ (((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) ∧ 𝑖 ∈ (1...((𝑃 − 1) / 2))) → (𝑖 · 2) = ((𝑖 · 2) mod 𝑃))
61	60	ralrimiva 3149	1 ⊢ ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → ∀𝑖 ∈ (1...((𝑃 − 1) / 2))(𝑖 · 2) = ((𝑖 · 2) mod 𝑃))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 207 ∧ wa 396 ∧ w3a 1080 = wceq 1522 ∈ wcel 2081 ≠ wne 2984 ∀wral 3105 class class class wbr 4962 (class class class)co 7016 ℂcc 10381 ℝcr 10382 0cc0 10383 1c1 10384 · cmul 10388 < clt 10521 ≤ cle 10522 − cmin 10717 / cdiv 11145 ℕcn 11486 2c2 11540 ℤcz 11829 ℝ⁺crp 12239 ...cfz 12742 mod cmo 13087 ∥ cdvds 15440

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1777 ax-4 1791 ax-5 1888 ax-6 1947 ax-7 1992 ax-8 2083 ax-9 2091 ax-10 2112 ax-11 2126 ax-12 2141 ax-13 2344 ax-ext 2769 ax-sep 5094 ax-nul 5101 ax-pow 5157 ax-pr 5221 ax-un 7319 ax-cnex 10439 ax-resscn 10440 ax-1cn 10441 ax-icn 10442 ax-addcl 10443 ax-addrcl 10444 ax-mulcl 10445 ax-mulrcl 10446 ax-mulcom 10447 ax-addass 10448 ax-mulass 10449 ax-distr 10450 ax-i2m1 10451 ax-1ne0 10452 ax-1rid 10453 ax-rnegex 10454 ax-rrecex 10455 ax-cnre 10456 ax-pre-lttri 10457 ax-pre-lttrn 10458 ax-pre-ltadd 10459 ax-pre-mulgt0 10460 ax-pre-sup 10461

This theorem depends on definitions: df-bi 208 df-an 397 df-or 843 df-3or 1081 df-3an 1082 df-tru 1525 df-ex 1762 df-nf 1766 df-sb 2043 df-mo 2576 df-eu 2612 df-clab 2776 df-cleq 2788 df-clel 2863 df-nfc 2935 df-ne 2985 df-nel 3091 df-ral 3110 df-rex 3111 df-reu 3112 df-rmo 3113 df-rab 3114 df-v 3439 df-sbc 3707 df-csb 3812 df-dif 3862 df-un 3864 df-in 3866 df-ss 3874 df-pss 3876 df-nul 4212 df-if 4382 df-pw 4455 df-sn 4473 df-pr 4475 df-tp 4477 df-op 4479 df-uni 4746 df-iun 4827 df-br 4963 df-opab 5025 df-mpt 5042 df-tr 5064 df-id 5348 df-eprel 5353 df-po 5362 df-so 5363 df-fr 5402 df-we 5404 df-xp 5449 df-rel 5450 df-cnv 5451 df-co 5452 df-dm 5453 df-rn 5454 df-res 5455 df-ima 5456 df-pred 6023 df-ord 6069 df-on 6070 df-lim 6071 df-suc 6072 df-iota 6189 df-fun 6227 df-fn 6228 df-f 6229 df-f1 6230 df-fo 6231 df-f1o 6232 df-fv 6233 df-riota 6977 df-ov 7019 df-oprab 7020 df-mpo 7021 df-om 7437 df-1st 7545 df-2nd 7546 df-wrecs 7798 df-recs 7860 df-rdg 7898 df-er 8139 df-en 8358 df-dom 8359 df-sdom 8360 df-sup 8752 df-inf 8753 df-pnf 10523 df-mnf 10524 df-xr 10525 df-ltxr 10526 df-le 10527 df-sub 10719 df-neg 10720 df-div 11146 df-nn 11487 df-2 11548 df-n0 11746 df-z 11830 df-uz 12094 df-rp 12240 df-fz 12743 df-fl 13012 df-mod 13088

This theorem is referenced by: 2lgslem1a 25649

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