lgsdi - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > lgsdi		Structured version Visualization version GIF version

Theorem lgsdi 25910

Description: The Legendre symbol is completely multiplicative in its right argument. Generalization of theorem 9.9(b) in [ApostolNT] p. 188 (which assumes that 𝑀 and 𝑁 are odd positive integers). (Contributed by Mario Carneiro, 5-Feb-2015.)

**Assertion**
Ref	Expression
lgsdi	⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝐴 /_L (𝑀 · 𝑁)) = ((𝐴 /_L 𝑀) · (𝐴 /_L 𝑁)))

Proof of Theorem lgsdi Dummy variables 𝑘 𝑛 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		3anrot 1096	. . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ↔ (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐴 ∈ ℤ))
2		lgsdilem 25900	. . . . 5 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐴 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → if((𝐴 < 0 ∧ (𝑀 · 𝑁) < 0), -1, 1) = (if((𝐴 < 0 ∧ 𝑀 < 0), -1, 1) · if((𝐴 < 0 ∧ 𝑁 < 0), -1, 1)))
3	1, 2	sylanb 583	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → if((𝐴 < 0 ∧ (𝑀 · 𝑁) < 0), -1, 1) = (if((𝐴 < 0 ∧ 𝑀 < 0), -1, 1) · if((𝐴 < 0 ∧ 𝑁 < 0), -1, 1)))
4		ancom 463	. . . . 5 ⊢ (((𝑀 · 𝑁) < 0 ∧ 𝐴 < 0) ↔ (𝐴 < 0 ∧ (𝑀 · 𝑁) < 0))
5		ifbi 4488	. . . . 5 ⊢ ((((𝑀 · 𝑁) < 0 ∧ 𝐴 < 0) ↔ (𝐴 < 0 ∧ (𝑀 · 𝑁) < 0)) → if(((𝑀 · 𝑁) < 0 ∧ 𝐴 < 0), -1, 1) = if((𝐴 < 0 ∧ (𝑀 · 𝑁) < 0), -1, 1))
6	4, 5	ax-mp 5	. . . 4 ⊢ if(((𝑀 · 𝑁) < 0 ∧ 𝐴 < 0), -1, 1) = if((𝐴 < 0 ∧ (𝑀 · 𝑁) < 0), -1, 1)
7		ancom 463	. . . . . 6 ⊢ ((𝑀 < 0 ∧ 𝐴 < 0) ↔ (𝐴 < 0 ∧ 𝑀 < 0))
8		ifbi 4488	. . . . . 6 ⊢ (((𝑀 < 0 ∧ 𝐴 < 0) ↔ (𝐴 < 0 ∧ 𝑀 < 0)) → if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) = if((𝐴 < 0 ∧ 𝑀 < 0), -1, 1))
9	7, 8	ax-mp 5	. . . . 5 ⊢ if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) = if((𝐴 < 0 ∧ 𝑀 < 0), -1, 1)
10		ancom 463	. . . . . 6 ⊢ ((𝑁 < 0 ∧ 𝐴 < 0) ↔ (𝐴 < 0 ∧ 𝑁 < 0))
11		ifbi 4488	. . . . . 6 ⊢ (((𝑁 < 0 ∧ 𝐴 < 0) ↔ (𝐴 < 0 ∧ 𝑁 < 0)) → if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1) = if((𝐴 < 0 ∧ 𝑁 < 0), -1, 1))
12	10, 11	ax-mp 5	. . . . 5 ⊢ if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1) = if((𝐴 < 0 ∧ 𝑁 < 0), -1, 1)
13	9, 12	oveq12i 7168	. . . 4 ⊢ (if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1)) = (if((𝐴 < 0 ∧ 𝑀 < 0), -1, 1) · if((𝐴 < 0 ∧ 𝑁 < 0), -1, 1))
14	3, 6, 13	3eqtr4g 2881	. . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → if(((𝑀 · 𝑁) < 0 ∧ 𝐴 < 0), -1, 1) = (if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1)))
15		simpl2 1188	. . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → 𝑀 ∈ ℤ)
16		simpl3 1189	. . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → 𝑁 ∈ ℤ)
17	15, 16	zmulcld 12094	. . . . . . 7 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝑀 · 𝑁) ∈ ℤ)
18	15	zcnd 12089	. . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → 𝑀 ∈ ℂ)
19	16	zcnd 12089	. . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → 𝑁 ∈ ℂ)
20		simprl 769	. . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → 𝑀 ≠ 0)
21		simprr 771	. . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → 𝑁 ≠ 0)
22	18, 19, 20, 21	mulne0d 11292	. . . . . . 7 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝑀 · 𝑁) ≠ 0)
23		nnabscl 14685	. . . . . . 7 ⊢ (((𝑀 · 𝑁) ∈ ℤ ∧ (𝑀 · 𝑁) ≠ 0) → (abs‘(𝑀 · 𝑁)) ∈ ℕ)
24	17, 22, 23	syl2anc 586	. . . . . 6 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (abs‘(𝑀 · 𝑁)) ∈ ℕ)
25		nnuz 12282	. . . . . 6 ⊢ ℕ = (ℤ_≥‘1)
26	24, 25	eleqtrdi 2923	. . . . 5 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (abs‘(𝑀 · 𝑁)) ∈ (ℤ_≥‘1))
27		simpl1 1187	. . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → 𝐴 ∈ ℤ)
28		eqid 2821	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))
29	28	lgsfcl3 25894	. . . . . . . 8 ⊢ ((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑀 ≠ 0) → (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)):ℕ⟶ℤ)
30	27, 15, 20, 29	syl3anc 1367	. . . . . . 7 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)):ℕ⟶ℤ)
31		elfznn 12937	. . . . . . 7 ⊢ (𝑘 ∈ (1...(abs‘(𝑀 · 𝑁))) → 𝑘 ∈ ℕ)
32		ffvelrn 6849	. . . . . . 7 ⊢ (((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)):ℕ⟶ℤ ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) ∈ ℤ)
33	30, 31, 32	syl2an 597	. . . . . 6 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) ∈ ℤ)
34	33	zcnd 12089	. . . . 5 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) ∈ ℂ)
35		eqid 2821	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))
36	35	lgsfcl3 25894	. . . . . . . 8 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)):ℕ⟶ℤ)
37	27, 16, 21, 36	syl3anc 1367	. . . . . . 7 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)):ℕ⟶ℤ)
38		ffvelrn 6849	. . . . . . 7 ⊢ (((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)):ℕ⟶ℤ ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘) ∈ ℤ)
39	37, 31, 38	syl2an 597	. . . . . 6 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘) ∈ ℤ)
40	39	zcnd 12089	. . . . 5 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘) ∈ ℂ)
41		simpr 487	. . . . . . . . . . 11 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → 𝑘 ∈ ℙ)
42	15	ad2antrr 724	. . . . . . . . . . 11 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → 𝑀 ∈ ℤ)
43	20	ad2antrr 724	. . . . . . . . . . 11 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → 𝑀 ≠ 0)
44	16	ad2antrr 724	. . . . . . . . . . 11 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → 𝑁 ∈ ℤ)
45	21	ad2antrr 724	. . . . . . . . . . 11 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → 𝑁 ≠ 0)
46		pcmul 16188	. . . . . . . . . . 11 ⊢ ((𝑘 ∈ ℙ ∧ (𝑀 ∈ ℤ ∧ 𝑀 ≠ 0) ∧ (𝑁 ∈ ℤ ∧ 𝑁 ≠ 0)) → (𝑘 pCnt (𝑀 · 𝑁)) = ((𝑘 pCnt 𝑀) + (𝑘 pCnt 𝑁)))
47	41, 42, 43, 44, 45, 46	syl122anc 1375	. . . . . . . . . 10 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → (𝑘 pCnt (𝑀 · 𝑁)) = ((𝑘 pCnt 𝑀) + (𝑘 pCnt 𝑁)))
48	47	oveq2d 7172	. . . . . . . . 9 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))) = ((𝐴 /_L 𝑘)↑((𝑘 pCnt 𝑀) + (𝑘 pCnt 𝑁))))
49	27	ad2antrr 724	. . . . . . . . . . . 12 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → 𝐴 ∈ ℤ)
50		prmz 16019	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℙ → 𝑘 ∈ ℤ)
51	50	adantl 484	. . . . . . . . . . . 12 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → 𝑘 ∈ ℤ)
52		lgscl 25887	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝐴 /_L 𝑘) ∈ ℤ)
53	49, 51, 52	syl2anc 586	. . . . . . . . . . 11 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → (𝐴 /_L 𝑘) ∈ ℤ)
54	53	zcnd 12089	. . . . . . . . . 10 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → (𝐴 /_L 𝑘) ∈ ℂ)
55		pczcl 16185	. . . . . . . . . . 11 ⊢ ((𝑘 ∈ ℙ ∧ (𝑁 ∈ ℤ ∧ 𝑁 ≠ 0)) → (𝑘 pCnt 𝑁) ∈ ℕ₀)
56	41, 44, 45, 55	syl12anc 834	. . . . . . . . . 10 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → (𝑘 pCnt 𝑁) ∈ ℕ₀)
57		pczcl 16185	. . . . . . . . . . 11 ⊢ ((𝑘 ∈ ℙ ∧ (𝑀 ∈ ℤ ∧ 𝑀 ≠ 0)) → (𝑘 pCnt 𝑀) ∈ ℕ₀)
58	41, 42, 43, 57	syl12anc 834	. . . . . . . . . 10 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → (𝑘 pCnt 𝑀) ∈ ℕ₀)
59	54, 56, 58	expaddd 13513	. . . . . . . . 9 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → ((𝐴 /_L 𝑘)↑((𝑘 pCnt 𝑀) + (𝑘 pCnt 𝑁))) = (((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)) · ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁))))
60	48, 59	eqtrd 2856	. . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))) = (((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)) · ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁))))
61		iftrue 4473	. . . . . . . . 9 ⊢ (𝑘 ∈ ℙ → if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1) = ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))))
62	61	adantl 484	. . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1) = ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))))
63		iftrue 4473	. . . . . . . . . 10 ⊢ (𝑘 ∈ ℙ → if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) = ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)))
64		iftrue 4473	. . . . . . . . . 10 ⊢ (𝑘 ∈ ℙ → if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1) = ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)))
65	63, 64	oveq12d 7174	. . . . . . . . 9 ⊢ (𝑘 ∈ ℙ → (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)) = (((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)) · ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁))))
66	65	adantl 484	. . . . . . . 8 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)) = (((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)) · ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁))))
67	60, 62, 66	3eqtr4rd 2867	. . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ 𝑘 ∈ ℙ) → (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1))
68		1t1e1 11800	. . . . . . . . 9 ⊢ (1 · 1) = 1
69		iffalse 4476	. . . . . . . . . 10 ⊢ (¬ 𝑘 ∈ ℙ → if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) = 1)
70		iffalse 4476	. . . . . . . . . 10 ⊢ (¬ 𝑘 ∈ ℙ → if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1) = 1)
71	69, 70	oveq12d 7174	. . . . . . . . 9 ⊢ (¬ 𝑘 ∈ ℙ → (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)) = (1 · 1))
72		iffalse 4476	. . . . . . . . 9 ⊢ (¬ 𝑘 ∈ ℙ → if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1) = 1)
73	68, 71, 72	3eqtr4a 2882	. . . . . . . 8 ⊢ (¬ 𝑘 ∈ ℙ → (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1))
74	73	adantl 484	. . . . . . 7 ⊢ (((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) ∧ ¬ 𝑘 ∈ ℙ) → (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1))
75	67, 74	pm2.61dan 811	. . . . . 6 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1))
76	31	adantl 484	. . . . . . 7 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → 𝑘 ∈ ℕ)
77		eleq1w 2895	. . . . . . . . . 10 ⊢ (𝑛 = 𝑘 → (𝑛 ∈ ℙ ↔ 𝑘 ∈ ℙ))
78		oveq2 7164	. . . . . . . . . . 11 ⊢ (𝑛 = 𝑘 → (𝐴 /_L 𝑛) = (𝐴 /_L 𝑘))
79		oveq1 7163	. . . . . . . . . . 11 ⊢ (𝑛 = 𝑘 → (𝑛 pCnt 𝑀) = (𝑘 pCnt 𝑀))
80	78, 79	oveq12d 7174	. . . . . . . . . 10 ⊢ (𝑛 = 𝑘 → ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)) = ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)))
81	77, 80	ifbieq1d 4490	. . . . . . . . 9 ⊢ (𝑛 = 𝑘 → if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1))
82		ovex 7189	. . . . . . . . . 10 ⊢ ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)) ∈ V
83		1ex 10637	. . . . . . . . . 10 ⊢ 1 ∈ V
84	82, 83	ifex 4515	. . . . . . . . 9 ⊢ if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) ∈ V
85	81, 28, 84	fvmpt 6768	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1))
86		oveq1 7163	. . . . . . . . . . 11 ⊢ (𝑛 = 𝑘 → (𝑛 pCnt 𝑁) = (𝑘 pCnt 𝑁))
87	78, 86	oveq12d 7174	. . . . . . . . . 10 ⊢ (𝑛 = 𝑘 → ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)) = ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)))
88	77, 87	ifbieq1d 4490	. . . . . . . . 9 ⊢ (𝑛 = 𝑘 → if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1))
89		ovex 7189	. . . . . . . . . 10 ⊢ ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)) ∈ V
90	89, 83	ifex 4515	. . . . . . . . 9 ⊢ if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1) ∈ V
91	88, 35, 90	fvmpt 6768	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1))
92	85, 91	oveq12d 7174	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → (((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) · ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘)) = (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)))
93	76, 92	syl 17	. . . . . 6 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → (((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) · ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘)) = (if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑀)), 1) · if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt 𝑁)), 1)))
94		oveq1 7163	. . . . . . . . . 10 ⊢ (𝑛 = 𝑘 → (𝑛 pCnt (𝑀 · 𝑁)) = (𝑘 pCnt (𝑀 · 𝑁)))
95	78, 94	oveq12d 7174	. . . . . . . . 9 ⊢ (𝑛 = 𝑘 → ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))) = ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))))
96	77, 95	ifbieq1d 4490	. . . . . . . 8 ⊢ (𝑛 = 𝑘 → if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1))
97		eqid 2821	. . . . . . . 8 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1))
98		ovex 7189	. . . . . . . . 9 ⊢ ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))) ∈ V
99	98, 83	ifex 4515	. . . . . . . 8 ⊢ if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1) ∈ V
100	96, 97, 99	fvmpt 6768	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1))‘𝑘) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1))
101	76, 100	syl 17	. . . . . 6 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1))‘𝑘) = if(𝑘 ∈ ℙ, ((𝐴 /_L 𝑘)↑(𝑘 pCnt (𝑀 · 𝑁))), 1))
102	75, 93, 101	3eqtr4rd 2867	. . . . 5 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘(𝑀 · 𝑁)))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1))‘𝑘) = (((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) · ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘)))
103	26, 34, 40, 102	prodfmul 15246	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1)))‘(abs‘(𝑀 · 𝑁))) = ((seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘(𝑀 · 𝑁))) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘(𝑀 · 𝑁)))))
104	27, 15, 16, 20, 21, 28	lgsdilem2 25909	. . . . 5 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀)) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘(𝑀 · 𝑁))))
105	27, 16, 15, 21, 20, 35	lgsdilem2 25909	. . . . . 6 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁)) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘(𝑁 · 𝑀))))
106	18, 19	mulcomd 10662	. . . . . . . 8 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝑀 · 𝑁) = (𝑁 · 𝑀))
107	106	fveq2d 6674	. . . . . . 7 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (abs‘(𝑀 · 𝑁)) = (abs‘(𝑁 · 𝑀)))
108	107	fveq2d 6674	. . . . . 6 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘(𝑀 · 𝑁))) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘(𝑁 · 𝑀))))
109	105, 108	eqtr4d 2859	. . . . 5 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁)) = (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘(𝑀 · 𝑁))))
110	104, 109	oveq12d 7174	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → ((seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀)) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁))) = ((seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘(𝑀 · 𝑁))) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘(𝑀 · 𝑁)))))
111	103, 110	eqtr4d 2859	. . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1)))‘(abs‘(𝑀 · 𝑁))) = ((seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀)) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁))))
112	14, 111	oveq12d 7174	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (if(((𝑀 · 𝑁) < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1)))‘(abs‘(𝑀 · 𝑁)))) = ((if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1)) · ((seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀)) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁)))))
113	97	lgsval4 25893	. . 3 ⊢ ((𝐴 ∈ ℤ ∧ (𝑀 · 𝑁) ∈ ℤ ∧ (𝑀 · 𝑁) ≠ 0) → (𝐴 /_L (𝑀 · 𝑁)) = (if(((𝑀 · 𝑁) < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1)))‘(abs‘(𝑀 · 𝑁)))))
114	27, 17, 22, 113	syl3anc 1367	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝐴 /_L (𝑀 · 𝑁)) = (if(((𝑀 · 𝑁) < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt (𝑀 · 𝑁))), 1)))‘(abs‘(𝑀 · 𝑁)))))
115	28	lgsval4 25893	. . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑀 ≠ 0) → (𝐴 /_L 𝑀) = (if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀))))
116	27, 15, 20, 115	syl3anc 1367	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝐴 /_L 𝑀) = (if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀))))
117	35	lgsval4 25893	. . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → (𝐴 /_L 𝑁) = (if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁))))
118	27, 16, 21, 117	syl3anc 1367	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝐴 /_L 𝑁) = (if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁))))
119	116, 118	oveq12d 7174	. . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → ((𝐴 /_L 𝑀) · (𝐴 /_L 𝑁)) = ((if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀))) · (if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁)))))
120		neg1cn 11752	. . . . . 6 ⊢ -1 ∈ ℂ
121		ax-1cn 10595	. . . . . 6 ⊢ 1 ∈ ℂ
122	120, 121	ifcli 4513	. . . . 5 ⊢ if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) ∈ ℂ
123	122	a1i 11	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) ∈ ℂ)
124		nnabscl 14685	. . . . . . 7 ⊢ ((𝑀 ∈ ℤ ∧ 𝑀 ≠ 0) → (abs‘𝑀) ∈ ℕ)
125	15, 20, 124	syl2anc 586	. . . . . 6 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (abs‘𝑀) ∈ ℕ)
126	125, 25	eleqtrdi 2923	. . . . 5 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (abs‘𝑀) ∈ (ℤ_≥‘1))
127		elfznn 12937	. . . . . . 7 ⊢ (𝑘 ∈ (1...(abs‘𝑀)) → 𝑘 ∈ ℕ)
128	30, 127, 32	syl2an 597	. . . . . 6 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘𝑀))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) ∈ ℤ)
129	128	zcnd 12089	. . . . 5 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘𝑀))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1))‘𝑘) ∈ ℂ)
130		mulcl 10621	. . . . . 6 ⊢ ((𝑘 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (𝑘 · 𝑥) ∈ ℂ)
131	130	adantl 484	. . . . 5 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ (𝑘 ∈ ℂ ∧ 𝑥 ∈ ℂ)) → (𝑘 · 𝑥) ∈ ℂ)
132	126, 129, 131	seqcl 13391	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀)) ∈ ℂ)
133	120, 121	ifcli 4513	. . . . 5 ⊢ if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1) ∈ ℂ
134	133	a1i 11	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1) ∈ ℂ)
135		nnabscl 14685	. . . . . . 7 ⊢ ((𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → (abs‘𝑁) ∈ ℕ)
136	16, 21, 135	syl2anc 586	. . . . . 6 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (abs‘𝑁) ∈ ℕ)
137	136, 25	eleqtrdi 2923	. . . . 5 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (abs‘𝑁) ∈ (ℤ_≥‘1))
138		elfznn 12937	. . . . . . 7 ⊢ (𝑘 ∈ (1...(abs‘𝑁)) → 𝑘 ∈ ℕ)
139	37, 138, 38	syl2an 597	. . . . . 6 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘𝑁))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘) ∈ ℤ)
140	139	zcnd 12089	. . . . 5 ⊢ ((((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) ∧ 𝑘 ∈ (1...(abs‘𝑁))) → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1))‘𝑘) ∈ ℂ)
141	137, 140, 131	seqcl 13391	. . . 4 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁)) ∈ ℂ)
142	123, 132, 134, 141	mul4d 10852	. . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → ((if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀))) · (if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁)))) = ((if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1)) · ((seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀)) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁)))))
143	119, 142	eqtrd 2856	. 2 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → ((𝐴 /_L 𝑀) · (𝐴 /_L 𝑁)) = ((if((𝑀 < 0 ∧ 𝐴 < 0), -1, 1) · if((𝑁 < 0 ∧ 𝐴 < 0), -1, 1)) · ((seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑀)), 1)))‘(abs‘𝑀)) · (seq1( · , (𝑛 ∈ ℕ ↦ if(𝑛 ∈ ℙ, ((𝐴 /_L 𝑛)↑(𝑛 pCnt 𝑁)), 1)))‘(abs‘𝑁)))))
144	112, 114, 143	3eqtr4d 2866	1 ⊢ (((𝐴 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ (𝑀 ≠ 0 ∧ 𝑁 ≠ 0)) → (𝐴 /_L (𝑀 · 𝑁)) = ((𝐴 /_L 𝑀) · (𝐴 /_L 𝑁)))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 208 ∧ wa 398 ∧ w3a 1083 = wceq 1537 ∈ wcel 2114 ≠ wne 3016 ifcif 4467 class class class wbr 5066 ↦ cmpt 5146 ⟶wf 6351 ‘cfv 6355 (class class class)co 7156 ℂcc 10535 0cc0 10537 1c1 10538 + caddc 10540 · cmul 10542 < clt 10675 -cneg 10871 ℕcn 11638 ℕ₀cn0 11898 ℤcz 11982 ℤ_≥cuz 12244 ...cfz 12893 seqcseq 13370 ↑cexp 13430 abscabs 14593 ℙcprime 16015 pCnt cpc 16173 /_L clgs 25870

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 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-rep 5190 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-cnex 10593 ax-resscn 10594 ax-1cn 10595 ax-icn 10596 ax-addcl 10597 ax-addrcl 10598 ax-mulcl 10599 ax-mulrcl 10600 ax-mulcom 10601 ax-addass 10602 ax-mulass 10603 ax-distr 10604 ax-i2m1 10605 ax-1ne0 10606 ax-1rid 10607 ax-rnegex 10608 ax-rrecex 10609 ax-cnre 10610 ax-pre-lttri 10611 ax-pre-lttrn 10612 ax-pre-ltadd 10613 ax-pre-mulgt0 10614 ax-pre-sup 10615

This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rmo 3146 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-int 4877 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-pred 6148 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7581 df-1st 7689 df-2nd 7690 df-wrecs 7947 df-recs 8008 df-rdg 8046 df-1o 8102 df-2o 8103 df-oadd 8106 df-er 8289 df-map 8408 df-en 8510 df-dom 8511 df-sdom 8512 df-fin 8513 df-sup 8906 df-inf 8907 df-dju 9330 df-card 9368 df-pnf 10677 df-mnf 10678 df-xr 10679 df-ltxr 10680 df-le 10681 df-sub 10872 df-neg 10873 df-div 11298 df-nn 11639 df-2 11701 df-3 11702 df-n0 11899 df-xnn0 11969 df-z 11983 df-uz 12245 df-q 12350 df-rp 12391 df-fz 12894 df-fzo 13035 df-fl 13163 df-mod 13239 df-seq 13371 df-exp 13431 df-hash 13692 df-cj 14458 df-re 14459 df-im 14460 df-sqrt 14594 df-abs 14595 df-dvds 15608 df-gcd 15844 df-prm 16016 df-phi 16103 df-pc 16174 df-lgs 25871

This theorem is referenced by: lgssq2 25914 lgsdinn0 25921 lgsquad2lem1 25960

W3C validator