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Theorem lgsmod 27169

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 13863	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝐴 mod 𝑁) ∈ ℕ₀)
2	1	3adant3 1131	. . . . . . . . . . . . . . 15 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℕ₀)
3	2	nn0zd 12591	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℤ)
4	3	ad2antrr 723	. . . . . . . . . . . . 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 1192	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) → ¬ 2 ∥ 𝑁)
8		breq1 5151	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑛 = 2 → (𝑛 ∥ 𝑁 ↔ 2 ∥ 𝑁))
9	8	notbid 318	. . . . . . . . . . . . . . . . . . 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 2954	. . . . . . . . . . . . . . . . 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 4790	. . . . . . . . . . . . . . . 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 16750	. . . . . . . . . . . . . . 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 12539	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝑛 − 1) / 2) ∈ ℕ₀)
18		zexpcl 14049	. . . . . . . . . . . . 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 12673	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁)↑((𝑛 − 1) / 2)) ∈ ℝ)
21		simpll1 1211	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℤ)
22		zexpcl 14049	. . . . . . . . . . . . 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 12673	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → (𝐴↑((𝑛 − 1) / 2)) ∈ ℝ)
25		1red 11222	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 1 ∈ ℝ)
26		prmnn 16618	. . . . . . . . . . . . 13 ⊢ (𝑛 ∈ ℙ → 𝑛 ∈ ℕ)
27	26	ad2antlr 724	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℕ)
28	27	nnrpd 13021	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℝ⁺)
29		prmz 16619	. . . . . . . . . . . . . . 15 ⊢ (𝑛 ∈ ℙ → 𝑛 ∈ ℤ)
30	29	ad2antlr 724	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℤ)
31		simp2 1136	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) → 𝑁 ∈ ℕ)
32	31	ad2antrr 723	. . . . . . . . . . . . . . 15 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℕ)
33	32	nnzd 12592	. . . . . . . . . . . . . 14 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℤ)
34	4, 21	zsubcld 12678	. . . . . . . . . . . . . 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 12673	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℝ)
37	32	nnrpd 13021	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑁 ∈ ℝ⁺)
38		modabs2 13877	. . . . . . . . . . . . . . . 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 16215	. . . . . . . . . . . . . . . 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 1370	. . . . . . . . . . . . . . 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 16245	. . . . . . . . . . . . 13 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → 𝑛 ∥ ((𝐴 mod 𝑁) − 𝐴))
44		moddvds 16215	. . . . . . . . . . . . . 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 1370	. . . . . . . . . . . . 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 14208	. . . . . . . . . . . 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 1380	. . . . . . . . . . 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 13880	. . . . . . . . . . 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 1380	. . . . . . . . . 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 7427	. . . . . . . . 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 27161	. . . . . . . . . 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 27161	. . . . . . . . . 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 2781	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) = (𝐴 /_L 𝑛))
57	56	oveq1d 7427	. . . . . . 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 723	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝐴 mod 𝑁) ∈ ℤ)
59	29	ad2antlr 724	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → 𝑛 ∈ ℤ)
60		lgscl 27157	. . . . . . . . . . . 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 12674	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 mod 𝑁) /_L 𝑛) ∈ ℂ)
63	62	exp0d 14112	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (((𝐴 mod 𝑁) /_L 𝑛)↑0) = 1)
64		simpll1 1211	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → 𝐴 ∈ ℤ)
65		lgscl 27157	. . . . . . . . . . . 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 12674	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → (𝐴 /_L 𝑛) ∈ ℂ)
68	67	exp0d 14112	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ ∧ ¬ 2 ∥ 𝑁) ∧ 𝑛 ∈ ℙ) ∧ ¬ 𝑛 ∥ 𝑁) → ((𝐴 /_L 𝑛)↑0) = 1)
69	63, 68	eqtr4d 2774	. . . . . . . 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 16811	. . . . . . . . . . 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 7428	. . . . . . . 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 7428	. . . . . . . 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 2781	. . . . . . 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 810	. . . . . 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 4559	. . . . 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 5250	. . . 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 13981	. . 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 6893	. 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 2731	. . . 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 27165	. . 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 2731	. . . 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 27165	. . 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 1131	. 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 2781	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 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2105 ≠ wne 2939 ∖ cdif 3945 ifcif 4528 {csn 4628 class class class wbr 5148 ↦ cmpt 5231 ‘cfv 6543 (class class class)co 7412 ℝcr 11115 0cc0 11116 1c1 11117 + caddc 11119 · cmul 11121 − cmin 11451 / cdiv 11878 ℕcn 12219 2c2 12274 ℕ₀cn0 12479 ℤcz 12565 ℝ⁺crp 12981 mod cmo 13841 seqcseq 13973 ↑cexp 14034 ∥ cdvds 16204 ℙcprime 16615 pCnt cpc 16776 /_L clgs 27140

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7729 ax-cnex 11172 ax-resscn 11173 ax-1cn 11174 ax-icn 11175 ax-addcl 11176 ax-addrcl 11177 ax-mulcl 11178 ax-mulrcl 11179 ax-mulcom 11180 ax-addass 11181 ax-mulass 11182 ax-distr 11183 ax-i2m1 11184 ax-1ne0 11185 ax-1rid 11186 ax-rnegex 11187 ax-rrecex 11188 ax-cnre 11189 ax-pre-lttri 11190 ax-pre-lttrn 11191 ax-pre-ltadd 11192 ax-pre-mulgt0 11193 ax-pre-sup 11194

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3375 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7368 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7860 df-1st 7979 df-2nd 7980 df-frecs 8272 df-wrecs 8303 df-recs 8377 df-rdg 8416 df-1o 8472 df-2o 8473 df-oadd 8476 df-er 8709 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-sup 9443 df-inf 9444 df-dju 9902 df-card 9940 df-pnf 11257 df-mnf 11258 df-xr 11259 df-ltxr 11260 df-le 11261 df-sub 11453 df-neg 11454 df-div 11879 df-nn 12220 df-2 12282 df-3 12283 df-n0 12480 df-xnn0 12552 df-z 12566 df-uz 12830 df-q 12940 df-rp 12982 df-fz 13492 df-fzo 13635 df-fl 13764 df-mod 13842 df-seq 13974 df-exp 14035 df-hash 14298 df-cj 15053 df-re 15054 df-im 15055 df-sqrt 15189 df-abs 15190 df-dvds 16205 df-gcd 16443 df-prm 16616 df-phi 16706 df-pc 16777 df-lgs 27141

This theorem is referenced by: lgsmodeq 27188 lgsqr 27197 lgsdchrval 27200

W3C validator