Theorem fvprmselgcd1 15749

Description: The greatest common divisor of two values of the prime selection function for different arguments is 1. (Contributed by AV, 19-Aug-2020.)

Hypothesis

Ref	Expression
fvprmselelfz.f	⊢ 𝐹 = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))

Assertion

Ref	Expression
fvprmselgcd1	⊢ ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1)

Distinct variable groups:   𝑚,𝑁   𝑚,𝑋   𝑚,𝑌

Allowed substitution hint:   𝐹(𝑚)

Proof of Theorem fvprmselgcd1

Step	Hyp	Ref	Expression
1		fvprmselelfz.f	. . . . . . 7 ⊢ 𝐹 = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))
2	1	a1i 11	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝐹 = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)))
3		eleq1 2689	. . . . . . . 8 ⊢ (𝑚 = 𝑋 → (𝑚 ∈ ℙ ↔ 𝑋 ∈ ℙ))
4		id 22	. . . . . . . 8 ⊢ (𝑚 = 𝑋 → 𝑚 = 𝑋)
5	3, 4	ifbieq1d 4109	. . . . . . 7 ⊢ (𝑚 = 𝑋 → if(𝑚 ∈ ℙ, 𝑚, 1) = if(𝑋 ∈ ℙ, 𝑋, 1))
6		iftrue 4092	. . . . . . . 8 ⊢ (𝑋 ∈ ℙ → if(𝑋 ∈ ℙ, 𝑋, 1) = 𝑋)
7	6	ad2antrr 762	. . . . . . 7 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → if(𝑋 ∈ ℙ, 𝑋, 1) = 𝑋)
8	5, 7	sylan9eqr 2678	. . . . . 6 ⊢ ((((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) ∧ 𝑚 = 𝑋) → if(𝑚 ∈ ℙ, 𝑚, 1) = 𝑋)
9		elfznn 12370	. . . . . . . 8 ⊢ (𝑋 ∈ (1...𝑁) → 𝑋 ∈ ℕ)
10	9	3ad2ant1 1082	. . . . . . 7 ⊢ ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → 𝑋 ∈ ℕ)
11	10	adantl 482	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ ℕ)
12		simpll 790	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ ℙ)
13	2, 8, 11, 12	fvmptd 6288	. . . . 5 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝐹‘𝑋) = 𝑋)
14		eleq1 2689	. . . . . . . 8 ⊢ (𝑚 = 𝑌 → (𝑚 ∈ ℙ ↔ 𝑌 ∈ ℙ))
15		id 22	. . . . . . . 8 ⊢ (𝑚 = 𝑌 → 𝑚 = 𝑌)
16	14, 15	ifbieq1d 4109	. . . . . . 7 ⊢ (𝑚 = 𝑌 → if(𝑚 ∈ ℙ, 𝑚, 1) = if(𝑌 ∈ ℙ, 𝑌, 1))
17		iftrue 4092	. . . . . . . 8 ⊢ (𝑌 ∈ ℙ → if(𝑌 ∈ ℙ, 𝑌, 1) = 𝑌)
18	17	ad2antlr 763	. . . . . . 7 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → if(𝑌 ∈ ℙ, 𝑌, 1) = 𝑌)
19	16, 18	sylan9eqr 2678	. . . . . 6 ⊢ ((((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) ∧ 𝑚 = 𝑌) → if(𝑚 ∈ ℙ, 𝑚, 1) = 𝑌)
20		elfznn 12370	. . . . . . . 8 ⊢ (𝑌 ∈ (1...𝑁) → 𝑌 ∈ ℕ)
21	20	3ad2ant2 1083	. . . . . . 7 ⊢ ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ ℕ)
22	21	adantl 482	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ ℕ)
23		simplr 792	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ ℙ)
24	2, 19, 22, 23	fvmptd 6288	. . . . 5 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝐹‘𝑌) = 𝑌)
25	13, 24	oveq12d 6668	. . . 4 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = (𝑋 gcd 𝑌))
26		prmrp 15424	. . . . . . 7 ⊢ ((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) → ((𝑋 gcd 𝑌) = 1 ↔ 𝑋 ≠ 𝑌))
27	26	biimprcd 240	. . . . . 6 ⊢ (𝑋 ≠ 𝑌 → ((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) → (𝑋 gcd 𝑌) = 1))
28	27	3ad2ant3 1084	. . . . 5 ⊢ ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → ((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) → (𝑋 gcd 𝑌) = 1))
29	28	impcom 446	. . . 4 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝑋 gcd 𝑌) = 1)
30	25, 29	eqtrd 2656	. . 3 ⊢ (((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1)
31	30	ex 450	. 2 ⊢ ((𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) → ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1))
32	1	a1i 11	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝐹 = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)))
33	6	ad2antrr 762	. . . . . . 7 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → if(𝑋 ∈ ℙ, 𝑋, 1) = 𝑋)
34	5, 33	sylan9eqr 2678	. . . . . 6 ⊢ ((((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) ∧ 𝑚 = 𝑋) → if(𝑚 ∈ ℙ, 𝑚, 1) = 𝑋)
35	10	adantl 482	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ ℕ)
36		simpll 790	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ ℙ)
37	32, 34, 35, 36	fvmptd 6288	. . . . 5 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝐹‘𝑋) = 𝑋)
38		iffalse 4095	. . . . . . . 8 ⊢ (¬ 𝑌 ∈ ℙ → if(𝑌 ∈ ℙ, 𝑌, 1) = 1)
39	38	ad2antlr 763	. . . . . . 7 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → if(𝑌 ∈ ℙ, 𝑌, 1) = 1)
40	16, 39	sylan9eqr 2678	. . . . . 6 ⊢ ((((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) ∧ 𝑚 = 𝑌) → if(𝑚 ∈ ℙ, 𝑚, 1) = 1)
41	21	adantl 482	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ ℕ)
42		1nn 11031	. . . . . . 7 ⊢ 1 ∈ ℕ
43	42	a1i 11	. . . . . 6 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 1 ∈ ℕ)
44	32, 40, 41, 43	fvmptd 6288	. . . . 5 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝐹‘𝑌) = 1)
45	37, 44	oveq12d 6668	. . . 4 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = (𝑋 gcd 1))
46		prmz 15389	. . . . . 6 ⊢ (𝑋 ∈ ℙ → 𝑋 ∈ ℤ)
47		gcd1 15249	. . . . . 6 ⊢ (𝑋 ∈ ℤ → (𝑋 gcd 1) = 1)
48	46, 47	syl 17	. . . . 5 ⊢ (𝑋 ∈ ℙ → (𝑋 gcd 1) = 1)
49	48	ad2antrr 762	. . . 4 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝑋 gcd 1) = 1)
50	45, 49	eqtrd 2656	. . 3 ⊢ (((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1)
51	50	ex 450	. 2 ⊢ ((𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) → ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1))
52	1	a1i 11	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝐹 = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)))
53		iffalse 4095	. . . . . . . 8 ⊢ (¬ 𝑋 ∈ ℙ → if(𝑋 ∈ ℙ, 𝑋, 1) = 1)
54	53	ad2antrr 762	. . . . . . 7 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → if(𝑋 ∈ ℙ, 𝑋, 1) = 1)
55	5, 54	sylan9eqr 2678	. . . . . 6 ⊢ ((((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) ∧ 𝑚 = 𝑋) → if(𝑚 ∈ ℙ, 𝑚, 1) = 1)
56	10	adantl 482	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ ℕ)
57	42	a1i 11	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 1 ∈ ℕ)
58	52, 55, 56, 57	fvmptd 6288	. . . . 5 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝐹‘𝑋) = 1)
59	17	ad2antlr 763	. . . . . . 7 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → if(𝑌 ∈ ℙ, 𝑌, 1) = 𝑌)
60	16, 59	sylan9eqr 2678	. . . . . 6 ⊢ ((((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) ∧ 𝑚 = 𝑌) → if(𝑚 ∈ ℙ, 𝑚, 1) = 𝑌)
61	21	adantl 482	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ ℕ)
62		simplr 792	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ ℙ)
63	52, 60, 61, 62	fvmptd 6288	. . . . 5 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝐹‘𝑌) = 𝑌)
64	58, 63	oveq12d 6668	. . . 4 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = (1 gcd 𝑌))
65		prmz 15389	. . . . . 6 ⊢ (𝑌 ∈ ℙ → 𝑌 ∈ ℤ)
66		1gcd 15254	. . . . . 6 ⊢ (𝑌 ∈ ℤ → (1 gcd 𝑌) = 1)
67	65, 66	syl 17	. . . . 5 ⊢ (𝑌 ∈ ℙ → (1 gcd 𝑌) = 1)
68	67	ad2antlr 763	. . . 4 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (1 gcd 𝑌) = 1)
69	64, 68	eqtrd 2656	. . 3 ⊢ (((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1)
70	69	ex 450	. 2 ⊢ ((¬ 𝑋 ∈ ℙ ∧ 𝑌 ∈ ℙ) → ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1))
71	1	a1i 11	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝐹 = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)))
72	53	ad2antrr 762	. . . . . . 7 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → if(𝑋 ∈ ℙ, 𝑋, 1) = 1)
73	5, 72	sylan9eqr 2678	. . . . . 6 ⊢ ((((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) ∧ 𝑚 = 𝑋) → if(𝑚 ∈ ℙ, 𝑚, 1) = 1)
74	10	adantl 482	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑋 ∈ ℕ)
75	42	a1i 11	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 1 ∈ ℕ)
76	71, 73, 74, 75	fvmptd 6288	. . . . 5 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝐹‘𝑋) = 1)
77	38	ad2antlr 763	. . . . . . 7 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → if(𝑌 ∈ ℙ, 𝑌, 1) = 1)
78	16, 77	sylan9eqr 2678	. . . . . 6 ⊢ ((((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) ∧ 𝑚 = 𝑌) → if(𝑚 ∈ ℙ, 𝑚, 1) = 1)
79	21	adantl 482	. . . . . 6 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → 𝑌 ∈ ℕ)
80	71, 78, 79, 75	fvmptd 6288	. . . . 5 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (𝐹‘𝑌) = 1)
81	76, 80	oveq12d 6668	. . . 4 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = (1 gcd 1))
82		1z 11407	. . . . 5 ⊢ 1 ∈ ℤ
83		1gcd 15254	. . . . 5 ⊢ (1 ∈ ℤ → (1 gcd 1) = 1)
84	82, 83	mp1i 13	. . . 4 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → (1 gcd 1) = 1)
85	81, 84	eqtrd 2656	. . 3 ⊢ (((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) ∧ (𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌)) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1)
86	85	ex 450	. 2 ⊢ ((¬ 𝑋 ∈ ℙ ∧ ¬ 𝑌 ∈ ℙ) → ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1))
87	31, 51, 70, 86	4cases 990	1 ⊢ ((𝑋 ∈ (1...𝑁) ∧ 𝑌 ∈ (1...𝑁) ∧ 𝑋 ≠ 𝑌) → ((𝐹‘𝑋) gcd (𝐹‘𝑌)) = 1)

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 384   ∧ w3a 1037   = wceq 1483   ∈ wcel 1990   ≠ wne 2794  ifcif 4086   ↦ cmpt 4729  ‘cfv 5888  (class class class)co 6650  1c1 9937  ℕcn 11020  ℤcz 11377  ...cfz 12326   gcd cgcd 15216  ℙcprime 15385

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013  ax-pre-sup 10014

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-2o 7561  df-er 7742  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-sup 8348  df-inf 8349  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-div 10685  df-nn 11021  df-2 11079  df-3 11080  df-n0 11293  df-z 11378  df-uz 11688  df-rp 11833  df-fz 12327  df-seq 12802  df-exp 12861  df-cj 13839  df-re 13840  df-im 13841  df-sqrt 13975  df-abs 13976  df-dvds 14984  df-gcd 15217  df-prm 15386

This theorem is referenced by:  prmodvdslcmf  15751