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Theorem lgsmod 27375

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 13922	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝐴 mod 𝑁) ∈ ℕ₀)
2	1	3adant3 1129	. . . . . . . . . . . . . . 15 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℕ₀)
3	2	nn0zd 12646	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℤ)
4	3	ad2antrr 724	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℤ)
5		simpr 483	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → 𝑛 ∈ ℙ)
6	5	adantr 479	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℙ)
7		simpl3 1190	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → ¬ 2 ∥ 𝑁)
8		breq1 5159	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑛 = 2 → (𝑛 ∥ 𝑁 ↔ 2 ∥ 𝑁))
9	8	notbid 317	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑛 = 2 → (¬ 𝑛 ∥ 𝑁 ↔ ¬ 2 ∥ 𝑁))
10	7, 9	syl5ibrcom 246	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → (𝑛 = 2 → ¬ 𝑛 ∥ 𝑁))
11	10	necon2ad 2948	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → (𝑛 ∥ 𝑁 → 𝑛 ≠ 2))
12	11	imp 405	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ≠ 2)
13		eldifsn 4798	. . . . . . . . . . . . . . . 16 ⊢ (𝑛 ∈ (ℙ ∖ {2}) ↔ (𝑛 ∈ ℙ ∧ 𝑛 ≠ 2))
14	6, 12, 13	sylanbrc 581	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ (ℙ ∖ {2}))
15		oddprm 16833	. . . . . . . . . . . . . . 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 12594	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝑛 − 1) / 2) ∈ ℕ₀)
18		zexpcl 14107	. . . . . . . . . . . . 13 ⊢ (((𝐴 mod 𝑁) ∈ ℤ ∧ ((𝑛 − 1) / 2) ∈ ℕ₀) → ((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) ∈ ℤ)
19	4, 17, 18	syl2anc 582	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) ∈ ℤ)
20	19	zred 12728	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) ∈ ℝ)
21		simpll1 1209	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℤ)
22		zexpcl 14107	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∈ ℤ ∧ ((𝑛 − 1) / 2) ∈ ℕ₀) → (𝐴↑((𝑛 − 1) / 2)) ∈ ℤ)
23	21, 17, 22	syl2anc 582	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (𝐴↑((𝑛 − 1) / 2)) ∈ ℤ)
24	23	zred 12728	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (𝐴↑((𝑛 − 1) / 2)) ∈ ℝ)
25		1red 11272	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 1 ∈ ℝ)
26		prmnn 16696	. . . . . . . . . . . . 13 ⊢ (𝑛 ∈ ℙ → 𝑛 ∈ ℕ)
27	26	ad2antlr 725	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℕ)
28	27	nnrpd 13078	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℝ⁺)
29		prmz 16697	. . . . . . . . . . . . . . 15 ⊢ (𝑛 ∈ ℙ → 𝑛 ∈ ℤ)
30	29	ad2antlr 725	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℤ)
31		simp2 1134	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → 𝑁 ∈ ℕ)
32	31	ad2antrr 724	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℕ)
33	32	nnzd 12647	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℤ)
34	4, 21	zsubcld 12733	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) − 𝐴) ∈ ℤ)
35		simpr 483	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∥ 𝑁)
36	21	zred 12728	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℝ)
37	32	nnrpd 13078	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℝ⁺)
38		modabs2 13936	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℝ ∧ 𝑁 ∈ ℝ⁺) → ((𝐴 mod 𝑁) mod 𝑁) = (𝐴 mod 𝑁))
39	36, 37, 38	syl2anc 582	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) mod 𝑁) = (𝐴 mod 𝑁))
40		moddvds 16288	. . . . . . . . . . . . . . . 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 1368	. . . . . . . . . . . . . . 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 231	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∥ ((𝐴 mod 𝑁) − 𝐴))
43	30, 33, 34, 35, 42	dvdstrd 16318	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∥ ((𝐴 mod 𝑁) − 𝐴))
44		moddvds 16288	. . . . . . . . . . . . . 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 1368	. . . . . . . . . . . . 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 256	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) mod 𝑛) = (𝐴 mod 𝑛))
47		modexp 14267	. . . . . . . . . . . 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 1378	. . . . . . . . . . 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 13939	. . . . . . . . . . 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 1378	. . . . . . . . . 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 7445	. . . . . . . . 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 27367	. . . . . . . . . 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 582	. . . . . . . . 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 27367	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℤ ∧ 𝑛 ∈ (ℙ ∖ {2})) → (𝐴 /_L 𝑛) = ((((𝐴↑((𝑛 − 1) / 2)) + 1) mod 𝑛) − 1))
55	21, 14, 54	syl2anc 582	. . . . . . . . 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 2779	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) = (𝐴 /_L 𝑛))
57	56	oveq1d 7445	. . . . . . 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 724	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℤ)
59	29	ad2antlr 725	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℤ)
60		lgscl 27363	. . . . . . . . . . . 12 ⊢ (((𝐴 mod 𝑁) ∈ ℤ ∧ 𝑛 ∈ ℤ) → ((𝐴 mod 𝑁) /_L 𝑛) ∈ ℤ)
61	58, 59, 60	syl2anc 582	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) ∈ ℤ)
62	61	zcnd 12729	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) ∈ ℂ)
63	62	exp0d 14170	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) /_L 𝑛)↑0) = 1)
64		simpll1 1209	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℤ)
65		lgscl 27363	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (𝐴 /_L 𝑛) ∈ ℤ)
66	64, 59, 65	syl2anc 582	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝐴 /_L 𝑛) ∈ ℤ)
67	66	zcnd 12729	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝐴 /_L 𝑛) ∈ ℂ)
68	67	exp0d 14170	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 /_L 𝑛)↑0) = 1)
69	63, 68	eqtr4d 2772	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) /_L 𝑛)↑0) = ((𝐴 /_L 𝑛)↑0))
70	31	adantr 479	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → 𝑁 ∈ ℕ)
71		pceq0 16894	. . . . . . . . . . 11 ⊢ ((𝑛 ∈ ℙ ∧ 𝑁 ∈ ℕ) → ((𝑛 pCnt 𝑁) = 0 ↔ ¬ 𝑛 ∥ 𝑁))
72	5, 70, 71	syl2anc 582	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → ((𝑛 pCnt 𝑁) = 0 ↔ ¬ 𝑛 ∥ 𝑁))
73	72	biimpar 476	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝑛 pCnt 𝑁) = 0)
74	73	oveq2d 7446	. . . . . . . 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 7446	. . . . . . . 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 2779	. . . . . . 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 811	. . . . . 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 4567	. . . . 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 5258	. . . 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 14040	. . 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 6907	. 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 2729	. . . 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 27371	. . 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 582	. 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 2729	. . . 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 27371	. . 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 1129	. 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 2779	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 205 ∧ wa 394 ∧ w3a 1084 = wceq 1534 ∈ wcel 2100 ≠ wne 2933 ∖ cdif 3956 ifcif 4536 {csn 4636 class class class wbr 5156 ↦ cmpt 5239 ‘cfv 6558 (class class class)co 7430 ℝcr 11164 0cc0 11165 1c1 11166 + caddc 11168 · cmul 11170 − cmin 11501 / cdiv 11928 ℕcn 12274 2c2 12329 ℕ₀cn0 12534 ℤcz 12620 ℝ⁺crp 13038 mod cmo 13900 seqcseq 14032 ↑cexp 14092 ∥ cdvds 16277 ℙcprime 16693 pCnt cpc 16859 /_L clgs 27346

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2102 ax-9 2110 ax-10 2133 ax-11 2150 ax-12 2170 ax-ext 2700 ax-rep 5293 ax-sep 5307 ax-nul 5314 ax-pow 5373 ax-pr 5437 ax-un 7751 ax-cnex 11221 ax-resscn 11222 ax-1cn 11223 ax-icn 11224 ax-addcl 11225 ax-addrcl 11226 ax-mulcl 11227 ax-mulrcl 11228 ax-mulcom 11229 ax-addass 11230 ax-mulass 11231 ax-distr 11232 ax-i2m1 11233 ax-1ne0 11234 ax-1rid 11235 ax-rnegex 11236 ax-rrecex 11237 ax-cnre 11238 ax-pre-lttri 11239 ax-pre-lttrn 11240 ax-pre-ltadd 11241 ax-pre-mulgt0 11242 ax-pre-sup 11243

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2062 df-mo 2532 df-eu 2561 df-clab 2707 df-cleq 2721 df-clel 2806 df-nfc 2881 df-ne 2934 df-nel 3040 df-ral 3055 df-rex 3064 df-rmo 3373 df-reu 3374 df-rab 3429 df-v 3474 df-sbc 3789 df-csb 3905 df-dif 3962 df-un 3964 df-in 3966 df-ss 3976 df-pss 3979 df-nul 4336 df-if 4537 df-pw 4612 df-sn 4637 df-pr 4639 df-op 4643 df-uni 4919 df-int 4960 df-iun 5008 df-br 5157 df-opab 5219 df-mpt 5240 df-tr 5274 df-id 5584 df-eprel 5590 df-po 5598 df-so 5599 df-fr 5641 df-we 5643 df-xp 5692 df-rel 5693 df-cnv 5694 df-co 5695 df-dm 5696 df-rn 5697 df-res 5698 df-ima 5699 df-pred 6317 df-ord 6383 df-on 6384 df-lim 6385 df-suc 6386 df-iota 6510 df-fun 6560 df-fn 6561 df-f 6562 df-f1 6563 df-fo 6564 df-f1o 6565 df-fv 6566 df-riota 7386 df-ov 7433 df-oprab 7434 df-mpo 7435 df-om 7885 df-1st 8011 df-2nd 8012 df-frecs 8304 df-wrecs 8335 df-recs 8409 df-rdg 8448 df-1o 8504 df-2o 8505 df-oadd 8508 df-er 8742 df-en 8983 df-dom 8984 df-sdom 8985 df-fin 8986 df-sup 9492 df-inf 9493 df-dju 9951 df-card 9989 df-pnf 11307 df-mnf 11308 df-xr 11309 df-ltxr 11310 df-le 11311 df-sub 11503 df-neg 11504 df-div 11929 df-nn 12275 df-2 12337 df-3 12338 df-n0 12535 df-xnn0 12607 df-z 12621 df-uz 12885 df-q 12995 df-rp 13039 df-fz 13549 df-fzo 13692 df-fl 13823 df-mod 13901 df-seq 14033 df-exp 14093 df-hash 14360 df-cj 15125 df-re 15126 df-im 15127 df-sqrt 15261 df-abs 15262 df-dvds 16278 df-gcd 16516 df-prm 16694 df-phi 16789 df-pc 16860 df-lgs 27347

This theorem is referenced by: lgsmodeq 27394 lgsqr 27403 lgsdchrval 27406

W3C validator