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Theorem lgsmod 27385

Description: The Legendre (Jacobi) symbol is preserved under reduction mod 𝑛 when 𝑛 is odd. (Contributed by Mario Carneiro, 4-Feb-2015.)

**Assertion**
Ref	Expression
lgsmod	⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑁) = (𝐴 /_L 𝑁))

Proof of Theorem lgsmod Dummy variable 𝑛 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		zmodcl 13942	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝐴 mod 𝑁) ∈ ℕ₀)
2	1	3adant3 1132	. . . . . . . . . . . . . . 15 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℕ₀)
3	2	nn0zd 12665	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℤ)
4	3	ad2antrr 725	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℤ)
5		simpr 484	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → 𝑛 ∈ ℙ)
6	5	adantr 480	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℙ)
7		simpl3 1193	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → ¬ 2 ∥ 𝑁)
8		breq1 5169	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑛 = 2 → (𝑛 ∥ 𝑁 ↔ 2 ∥ 𝑁))
9	8	notbid 318	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑛 = 2 → (¬ 𝑛 ∥ 𝑁 ↔ ¬ 2 ∥ 𝑁))
10	7, 9	syl5ibrcom 247	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → (𝑛 = 2 → ¬ 𝑛 ∥ 𝑁))
11	10	necon2ad 2961	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → (𝑛 ∥ 𝑁 → 𝑛 ≠ 2))
12	11	imp 406	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ≠ 2)
13		eldifsn 4811	. . . . . . . . . . . . . . . 16 ⊢ (𝑛 ∈ (ℙ ∖ {2}) ↔ (𝑛 ∈ ℙ ∧ 𝑛 ≠ 2))
14	6, 12, 13	sylanbrc 582	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ (ℙ ∖ {2}))
15		oddprm 16857	. . . . . . . . . . . . . . 15 ⊢ (𝑛 ∈ (ℙ ∖ {2}) → ((𝑛 − 1) / 2) ∈ ℕ)
16	14, 15	syl 17	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝑛 − 1) / 2) ∈ ℕ)
17	16	nnnn0d 12613	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝑛 − 1) / 2) ∈ ℕ₀)
18		zexpcl 14127	. . . . . . . . . . . . 13 ⊢ (((𝐴 mod 𝑁) ∈ ℤ ∧ ((𝑛 − 1) / 2) ∈ ℕ₀) → ((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) ∈ ℤ)
19	4, 17, 18	syl2anc 583	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) ∈ ℤ)
20	19	zred 12747	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) ∈ ℝ)
21		simpll1 1212	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℤ)
22		zexpcl 14127	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∈ ℤ ∧ ((𝑛 − 1) / 2) ∈ ℕ₀) → (𝐴↑((𝑛 − 1) / 2)) ∈ ℤ)
23	21, 17, 22	syl2anc 583	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (𝐴↑((𝑛 − 1) / 2)) ∈ ℤ)
24	23	zred 12747	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (𝐴↑((𝑛 − 1) / 2)) ∈ ℝ)
25		1red 11291	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 1 ∈ ℝ)
26		prmnn 16721	. . . . . . . . . . . . 13 ⊢ (𝑛 ∈ ℙ → 𝑛 ∈ ℕ)
27	26	ad2antlr 726	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℕ)
28	27	nnrpd 13097	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℝ⁺)
29		prmz 16722	. . . . . . . . . . . . . . 15 ⊢ (𝑛 ∈ ℙ → 𝑛 ∈ ℤ)
30	29	ad2antlr 726	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℤ)
31		simp2 1137	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → 𝑁 ∈ ℕ)
32	31	ad2antrr 725	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℕ)
33	32	nnzd 12666	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℤ)
34	4, 21	zsubcld 12752	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) − 𝐴) ∈ ℤ)
35		simpr 484	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∥ 𝑁)
36	21	zred 12747	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℝ)
37	32	nnrpd 13097	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℝ⁺)
38		modabs2 13956	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℝ ∧ 𝑁 ∈ ℝ⁺) → ((𝐴 mod 𝑁) mod 𝑁) = (𝐴 mod 𝑁))
39	36, 37, 38	syl2anc 583	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) mod 𝑁) = (𝐴 mod 𝑁))
40		moddvds 16313	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ (𝐴 mod 𝑁) ∈ ℤ ∧ 𝐴 ∈ ℤ) → (((𝐴 mod 𝑁) mod 𝑁) = (𝐴 mod 𝑁) ↔ 𝑁 ∥ ((𝐴 mod 𝑁) − 𝐴)))
41	32, 4, 21, 40	syl3anc 1371	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) mod 𝑁) = (𝐴 mod 𝑁) ↔ 𝑁 ∥ ((𝐴 mod 𝑁) − 𝐴)))
42	39, 41	mpbid 232	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∥ ((𝐴 mod 𝑁) − 𝐴))
43	30, 33, 34, 35, 42	dvdstrd 16343	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∥ ((𝐴 mod 𝑁) − 𝐴))
44		moddvds 16313	. . . . . . . . . . . . . 14 ⊢ ((𝑛 ∈ ℕ ∧ (𝐴 mod 𝑁) ∈ ℤ ∧ 𝐴 ∈ ℤ) → (((𝐴 mod 𝑁) mod 𝑛) = (𝐴 mod 𝑛) ↔ 𝑛 ∥ ((𝐴 mod 𝑁) − 𝐴)))
45	27, 4, 21, 44	syl3anc 1371	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) mod 𝑛) = (𝐴 mod 𝑛) ↔ 𝑛 ∥ ((𝐴 mod 𝑁) − 𝐴)))
46	43, 45	mpbird 257	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) mod 𝑛) = (𝐴 mod 𝑛))
47		modexp 14287	. . . . . . . . . . . 12 ⊢ ((((𝐴 mod 𝑁) ∈ ℤ ∧ 𝐴 ∈ ℤ) ∧ (((𝑛 − 1) / 2) ∈ ℕ₀ ∧ 𝑛 ∈ ℝ⁺) ∧ ((𝐴 mod 𝑁) mod 𝑛) = (𝐴 mod 𝑛)) → (((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) mod 𝑛) = ((𝐴↑((𝑛 − 1) / 2)) mod 𝑛))
48	4, 21, 17, 28, 46, 47	syl221anc 1381	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) mod 𝑛) = ((𝐴↑((𝑛 − 1) / 2)) mod 𝑛))
49		modadd1 13959	. . . . . . . . . . 11 ⊢ (((((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) ∈ ℝ ∧ (𝐴↑((𝑛 − 1) / 2)) ∈ ℝ) ∧ (1 ∈ ℝ ∧ 𝑛 ∈ ℝ⁺) ∧ (((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) mod 𝑛) = ((𝐴↑((𝑛 − 1) / 2)) mod 𝑛)) → ((((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) + 1) mod 𝑛) = (((𝐴↑((𝑛 − 1) / 2)) + 1) mod 𝑛))
50	20, 24, 25, 28, 48, 49	syl221anc 1381	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) + 1) mod 𝑛) = (((𝐴↑((𝑛 − 1) / 2)) + 1) mod 𝑛))
51	50	oveq1d 7463	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (((((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) + 1) mod 𝑛) − 1) = ((((𝐴↑((𝑛 − 1) / 2)) + 1) mod 𝑛) − 1))
52		lgsval3 27377	. . . . . . . . . 10 ⊢ (((𝐴 mod 𝑁) ∈ ℤ ∧ 𝑛 ∈ (ℙ ∖ {2})) → ((𝐴 mod 𝑁) /_L 𝑛) = (((((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) + 1) mod 𝑛) − 1))
53	4, 14, 52	syl2anc 583	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) = (((((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) + 1) mod 𝑛) − 1))
54		lgsval3 27377	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℤ ∧ 𝑛 ∈ (ℙ ∖ {2})) → (𝐴 /_L 𝑛) = ((((𝐴↑((𝑛 − 1) / 2)) + 1) mod 𝑛) − 1))
55	21, 14, 54	syl2anc 583	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (𝐴 /_L 𝑛) = ((((𝐴↑((𝑛 − 1) / 2)) + 1) mod 𝑛) − 1))
56	51, 53, 55	3eqtr4d 2790	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) = (𝐴 /_L 𝑛))
57	56	oveq1d 7463	. . . . . . 7 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)) = ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)))
58	3	ad2antrr 725	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℤ)
59	29	ad2antlr 726	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℤ)
60		lgscl 27373	. . . . . . . . . . . 12 ⊢ (((𝐴 mod 𝑁) ∈ ℤ ∧ 𝑛 ∈ ℤ) → ((𝐴 mod 𝑁) /_L 𝑛) ∈ ℤ)
61	58, 59, 60	syl2anc 583	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) ∈ ℤ)
62	61	zcnd 12748	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) ∈ ℂ)
63	62	exp0d 14190	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) /_L 𝑛)↑0) = 1)
64		simpll1 1212	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℤ)
65		lgscl 27373	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (𝐴 /_L 𝑛) ∈ ℤ)
66	64, 59, 65	syl2anc 583	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝐴 /_L 𝑛) ∈ ℤ)
67	66	zcnd 12748	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝐴 /_L 𝑛) ∈ ℂ)
68	67	exp0d 14190	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 /_L 𝑛)↑0) = 1)
69	63, 68	eqtr4d 2783	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) /_L 𝑛)↑0) = ((𝐴 /_L 𝑛)↑0))
70	31	adantr 480	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → 𝑁 ∈ ℕ)
71		pceq0 16918	. . . . . . . . . . 11 ⊢ ((𝑛 ∈ ℙ ∧ 𝑁 ∈ ℕ) → ((𝑛 pCnt 𝑁) = 0 ↔ ¬ 𝑛 ∥ 𝑁))
72	5, 70, 71	syl2anc 583	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → ((𝑛 pCnt 𝑁) = 0 ↔ ¬ 𝑛 ∥ 𝑁))
73	72	biimpar 477	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝑛 pCnt 𝑁) = 0)
74	73	oveq2d 7464	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)) = (((𝐴 mod 𝑁) /_L 𝑛)↑0))
75	73	oveq2d 7464	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)) = ((𝐴 /_L 𝑛)↑0))
76	69, 74, 75	3eqtr4d 2790	. . . . . . 7 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)) = ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)))
77	57, 76	pm2.61dan 812	. . . . . 6 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)) = ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)))
78	77	ifeq1da 4579	. . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → if(𝑛 ∈ ℙ, (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1) = if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))
79	78	mpteq2dv 5268	. . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))
80	79	seqeq3d 14060	. . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))) = seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))))
81	80	fveq1d 6922	. 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘𝑁) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘𝑁))
82		eqid 2740	. . . 4 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))
83	82	lgsval4a 27381	. . 3 ⊢ (((𝐴 mod 𝑁) ∈ ℤ ∧ 𝑁 ∈ ℕ) → ((𝐴 mod 𝑁) /_L 𝑁) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘𝑁))
84	3, 31, 83	syl2anc 583	. 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑁) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, (((𝐴 mod 𝑁) /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘𝑁))
85		eqid 2740	. . . 4 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))
86	85	lgsval4a 27381	. . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝐴 /_L 𝑁) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘𝑁))
87	86	3adant3 1132	. 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (𝐴 /_L 𝑁) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘𝑁))
88	81, 84, 87	3eqtr4d 2790	1 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑁) = (𝐴 /_L 𝑁))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1537 ∈ wcel 2108 ≠ wne 2946 ∖ cdif 3973 ifcif 4548 {csn 4648 class class class wbr 5166 ↦ cmpt 5249 ‘cfv 6573 (class class class)co 7448 ℝcr 11183 0cc0 11184 1c1 11185 + caddc 11187 · cmul 11189 − cmin 11520 / cdiv 11947 ℕcn 12293 2c2 12348 ℕ₀cn0 12553 ℤcz 12639 ℝ⁺crp 13057 mod cmo 13920 seqcseq 14052 ↑cexp 14112 ∥ cdvds 16302 ℙcprime 16718 pCnt cpc 16883 /_L clgs 27356

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-rep 5303 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 ax-cnex 11240 ax-resscn 11241 ax-1cn 11242 ax-icn 11243 ax-addcl 11244 ax-addrcl 11245 ax-mulcl 11246 ax-mulrcl 11247 ax-mulcom 11248 ax-addass 11249 ax-mulass 11250 ax-distr 11251 ax-i2m1 11252 ax-1ne0 11253 ax-1rid 11254 ax-rnegex 11255 ax-rrecex 11256 ax-cnre 11257 ax-pre-lttri 11258 ax-pre-lttrn 11259 ax-pre-ltadd 11260 ax-pre-mulgt0 11261 ax-pre-sup 11262

This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-nel 3053 df-ral 3068 df-rex 3077 df-rmo 3388 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-pss 3996 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-int 4971 df-iun 5017 df-br 5167 df-opab 5229 df-mpt 5250 df-tr 5284 df-id 5593 df-eprel 5599 df-po 5607 df-so 5608 df-fr 5652 df-we 5654 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-pred 6332 df-ord 6398 df-on 6399 df-lim 6400 df-suc 6401 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-riota 7404 df-ov 7451 df-oprab 7452 df-mpo 7453 df-om 7904 df-1st 8030 df-2nd 8031 df-frecs 8322 df-wrecs 8353 df-recs 8427 df-rdg 8466 df-1o 8522 df-2o 8523 df-oadd 8526 df-er 8763 df-en 9004 df-dom 9005 df-sdom 9006 df-fin 9007 df-sup 9511 df-inf 9512 df-dju 9970 df-card 10008 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11522 df-neg 11523 df-div 11948 df-nn 12294 df-2 12356 df-3 12357 df-n0 12554 df-xnn0 12626 df-z 12640 df-uz 12904 df-q 13014 df-rp 13058 df-fz 13568 df-fzo 13712 df-fl 13843 df-mod 13921 df-seq 14053 df-exp 14113 df-hash 14380 df-cj 15148 df-re 15149 df-im 15150 df-sqrt 15284 df-abs 15285 df-dvds 16303 df-gcd 16541 df-prm 16719 df-phi 16813 df-pc 16884 df-lgs 27357

This theorem is referenced by: lgsmodeq 27404 lgsqr 27413 lgsdchrval 27416

W3C validator