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Theorem pcgcd1 16902

Description: The prime count of a GCD is the minimum of the prime counts of the arguments. (Contributed by Mario Carneiro, 3-Oct-2014.)

**Assertion**
Ref	Expression
pcgcd1	⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ (𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵)) → (𝑃 pCnt (𝐴 gcd 𝐵)) = (𝑃 pCnt 𝐴))

**Proof of Theorem pcgcd1**
Step	Hyp	Ref	Expression
1		oveq2 7418	. . . 4 ⊢ (𝐵 = 0 → (𝐴 gcd 𝐵) = (𝐴 gcd 0))
2	1	oveq2d 7426	. . 3 ⊢ (𝐵 = 0 → (𝑃 pCnt (𝐴 gcd 𝐵)) = (𝑃 pCnt (𝐴 gcd 0)))
3	2	eqeq1d 2738	. 2 ⊢ (𝐵 = 0 → ((𝑃 pCnt (𝐴 gcd 𝐵)) = (𝑃 pCnt 𝐴) ↔ (𝑃 pCnt (𝐴 gcd 0)) = (𝑃 pCnt 𝐴)))
4		simpl1 1192	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → 𝑃 ∈ ℙ)
5		simp2 1137	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → 𝐴 ∈ ℤ)
6	5	adantr 480	. . . . . . 7 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → 𝐴 ∈ ℤ)
7		simpl3 1194	. . . . . . 7 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → 𝐵 ∈ ℤ)
8		simprr 772	. . . . . . . 8 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → 𝐵 ≠ 0)
9		simpr 484	. . . . . . . . 9 ⊢ ((𝐴 = 0 ∧ 𝐵 = 0) → 𝐵 = 0)
10	9	necon3ai 2958	. . . . . . . 8 ⊢ (𝐵 ≠ 0 → ¬ (𝐴 = 0 ∧ 𝐵 = 0))
11	8, 10	syl 17	. . . . . . 7 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → ¬ (𝐴 = 0 ∧ 𝐵 = 0))
12		gcdn0cl 16526	. . . . . . 7 ⊢ (((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ¬ (𝐴 = 0 ∧ 𝐵 = 0)) → (𝐴 gcd 𝐵) ∈ ℕ)
13	6, 7, 11, 12	syl21anc 837	. . . . . 6 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝐴 gcd 𝐵) ∈ ℕ)
14	13	nnzd 12620	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝐴 gcd 𝐵) ∈ ℤ)
15		gcddvds 16527	. . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → ((𝐴 gcd 𝐵) ∥ 𝐴 ∧ (𝐴 gcd 𝐵) ∥ 𝐵))
16	6, 7, 15	syl2anc 584	. . . . . 6 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → ((𝐴 gcd 𝐵) ∥ 𝐴 ∧ (𝐴 gcd 𝐵) ∥ 𝐵))
17	16	simpld 494	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝐴 gcd 𝐵) ∥ 𝐴)
18		pcdvdstr 16901	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ ((𝐴 gcd 𝐵) ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝐵) ∥ 𝐴)) → (𝑃 pCnt (𝐴 gcd 𝐵)) ≤ (𝑃 pCnt 𝐴))
19	4, 14, 6, 17, 18	syl13anc 1374	. . . 4 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt (𝐴 gcd 𝐵)) ≤ (𝑃 pCnt 𝐴))
20		zq 12975	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ℤ → 𝐴 ∈ ℚ)
21	6, 20	syl 17	. . . . . . . . . 10 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → 𝐴 ∈ ℚ)
22		pcxcl 16886	. . . . . . . . . 10 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℚ) → (𝑃 pCnt 𝐴) ∈ ℝ^*)
23	4, 21, 22	syl2anc 584	. . . . . . . . 9 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 𝐴) ∈ ℝ^*)
24		pczcl 16873	. . . . . . . . . . 11 ⊢ ((𝑃 ∈ ℙ ∧ (𝐵 ∈ ℤ ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 𝐵) ∈ ℕ₀)
25	4, 7, 8, 24	syl12anc 836	. . . . . . . . . 10 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 𝐵) ∈ ℕ₀)
26	25	nn0red 12568	. . . . . . . . 9 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 𝐵) ∈ ℝ)
27		pcge0 16887	. . . . . . . . . . 11 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ) → 0 ≤ (𝑃 pCnt 𝐴))
28	4, 6, 27	syl2anc 584	. . . . . . . . . 10 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → 0 ≤ (𝑃 pCnt 𝐴))
29		ge0gtmnf 13193	. . . . . . . . . 10 ⊢ (((𝑃 pCnt 𝐴) ∈ ℝ^* ∧ 0 ≤ (𝑃 pCnt 𝐴)) → -∞ < (𝑃 pCnt 𝐴))
30	23, 28, 29	syl2anc 584	. . . . . . . . 9 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → -∞ < (𝑃 pCnt 𝐴))
31		simprl 770	. . . . . . . . 9 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵))
32		xrre 13190	. . . . . . . . 9 ⊢ ((((𝑃 pCnt 𝐴) ∈ ℝ^* ∧ (𝑃 pCnt 𝐵) ∈ ℝ) ∧ (-∞ < (𝑃 pCnt 𝐴) ∧ (𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵))) → (𝑃 pCnt 𝐴) ∈ ℝ)
33	23, 26, 30, 31, 32	syl22anc 838	. . . . . . . 8 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 𝐴) ∈ ℝ)
34		pnfnre 11281	. . . . . . . . . . . 12 ⊢ +∞ ∉ ℝ
35	34	neli 3039	. . . . . . . . . . 11 ⊢ ¬ +∞ ∈ ℝ
36		pc0 16879	. . . . . . . . . . . . 13 ⊢ (𝑃 ∈ ℙ → (𝑃 pCnt 0) = +∞)
37	4, 36	syl 17	. . . . . . . . . . . 12 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 0) = +∞)
38	37	eleq1d 2820	. . . . . . . . . . 11 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → ((𝑃 pCnt 0) ∈ ℝ ↔ +∞ ∈ ℝ))
39	35, 38	mtbiri 327	. . . . . . . . . 10 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → ¬ (𝑃 pCnt 0) ∈ ℝ)
40		oveq2 7418	. . . . . . . . . . . 12 ⊢ (𝐴 = 0 → (𝑃 pCnt 𝐴) = (𝑃 pCnt 0))
41	40	eleq1d 2820	. . . . . . . . . . 11 ⊢ (𝐴 = 0 → ((𝑃 pCnt 𝐴) ∈ ℝ ↔ (𝑃 pCnt 0) ∈ ℝ))
42	41	notbid 318	. . . . . . . . . 10 ⊢ (𝐴 = 0 → (¬ (𝑃 pCnt 𝐴) ∈ ℝ ↔ ¬ (𝑃 pCnt 0) ∈ ℝ))
43	39, 42	syl5ibrcom 247	. . . . . . . . 9 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝐴 = 0 → ¬ (𝑃 pCnt 𝐴) ∈ ℝ))
44	43	necon2ad 2948	. . . . . . . 8 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → ((𝑃 pCnt 𝐴) ∈ ℝ → 𝐴 ≠ 0))
45	33, 44	mpd 15	. . . . . . 7 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → 𝐴 ≠ 0)
46		pczdvds 16888	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ (𝐴 ∈ ℤ ∧ 𝐴 ≠ 0)) → (𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐴)
47	4, 6, 45, 46	syl12anc 836	. . . . . 6 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐴)
48		pczcl 16873	. . . . . . . . 9 ⊢ ((𝑃 ∈ ℙ ∧ (𝐴 ∈ ℤ ∧ 𝐴 ≠ 0)) → (𝑃 pCnt 𝐴) ∈ ℕ₀)
49	4, 6, 45, 48	syl12anc 836	. . . . . . . 8 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 𝐴) ∈ ℕ₀)
50		pcdvdsb 16894	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝐵 ∈ ℤ ∧ (𝑃 pCnt 𝐴) ∈ ℕ₀) → ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ↔ (𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐵))
51	4, 7, 49, 50	syl3anc 1373	. . . . . . 7 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ↔ (𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐵))
52	31, 51	mpbid 232	. . . . . 6 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐵)
53		prmnn 16698	. . . . . . . . . 10 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
54	4, 53	syl 17	. . . . . . . . 9 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → 𝑃 ∈ ℕ)
55	54, 49	nnexpcld 14268	. . . . . . . 8 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃↑(𝑃 pCnt 𝐴)) ∈ ℕ)
56	55	nnzd 12620	. . . . . . 7 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃↑(𝑃 pCnt 𝐴)) ∈ ℤ)
57		dvdsgcd 16568	. . . . . . 7 ⊢ (((𝑃↑(𝑃 pCnt 𝐴)) ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (((𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐴 ∧ (𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐵) → (𝑃↑(𝑃 pCnt 𝐴)) ∥ (𝐴 gcd 𝐵)))
58	56, 6, 7, 57	syl3anc 1373	. . . . . 6 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (((𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐴 ∧ (𝑃↑(𝑃 pCnt 𝐴)) ∥ 𝐵) → (𝑃↑(𝑃 pCnt 𝐴)) ∥ (𝐴 gcd 𝐵)))
59	47, 52, 58	mp2and 699	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃↑(𝑃 pCnt 𝐴)) ∥ (𝐴 gcd 𝐵))
60		pcdvdsb 16894	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ (𝐴 gcd 𝐵) ∈ ℤ ∧ (𝑃 pCnt 𝐴) ∈ ℕ₀) → ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt (𝐴 gcd 𝐵)) ↔ (𝑃↑(𝑃 pCnt 𝐴)) ∥ (𝐴 gcd 𝐵)))
61	4, 14, 49, 60	syl3anc 1373	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt (𝐴 gcd 𝐵)) ↔ (𝑃↑(𝑃 pCnt 𝐴)) ∥ (𝐴 gcd 𝐵)))
62	59, 61	mpbird 257	. . . 4 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt 𝐴) ≤ (𝑃 pCnt (𝐴 gcd 𝐵)))
63	4, 13	pccld 16875	. . . . . 6 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt (𝐴 gcd 𝐵)) ∈ ℕ₀)
64	63	nn0red 12568	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt (𝐴 gcd 𝐵)) ∈ ℝ)
65	64, 33	letri3d 11382	. . . 4 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → ((𝑃 pCnt (𝐴 gcd 𝐵)) = (𝑃 pCnt 𝐴) ↔ ((𝑃 pCnt (𝐴 gcd 𝐵)) ≤ (𝑃 pCnt 𝐴) ∧ (𝑃 pCnt 𝐴) ≤ (𝑃 pCnt (𝐴 gcd 𝐵)))))
66	19, 62, 65	mpbir2and 713	. . 3 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ ((𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵) ∧ 𝐵 ≠ 0)) → (𝑃 pCnt (𝐴 gcd 𝐵)) = (𝑃 pCnt 𝐴))
67	66	anassrs 467	. 2 ⊢ ((((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ (𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵)) ∧ 𝐵 ≠ 0) → (𝑃 pCnt (𝐴 gcd 𝐵)) = (𝑃 pCnt 𝐴))
68		gcdid0 16544	. . . . . 6 ⊢ (𝐴 ∈ ℤ → (𝐴 gcd 0) = (abs‘𝐴))
69	5, 68	syl 17	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (𝐴 gcd 0) = (abs‘𝐴))
70	69	oveq2d 7426	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (𝑃 pCnt (𝐴 gcd 0)) = (𝑃 pCnt (abs‘𝐴)))
71		pcabs 16900	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℚ) → (𝑃 pCnt (abs‘𝐴)) = (𝑃 pCnt 𝐴))
72	20, 71	sylan2 593	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ) → (𝑃 pCnt (abs‘𝐴)) = (𝑃 pCnt 𝐴))
73	72	3adant3 1132	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (𝑃 pCnt (abs‘𝐴)) = (𝑃 pCnt 𝐴))
74	70, 73	eqtrd 2771	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (𝑃 pCnt (𝐴 gcd 0)) = (𝑃 pCnt 𝐴))
75	74	adantr 480	. 2 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ (𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵)) → (𝑃 pCnt (𝐴 gcd 0)) = (𝑃 pCnt 𝐴))
76	3, 67, 75	pm2.61ne 3018	1 ⊢ (((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ (𝑃 pCnt 𝐴) ≤ (𝑃 pCnt 𝐵)) → (𝑃 pCnt (𝐴 gcd 𝐵)) = (𝑃 pCnt 𝐴))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 ≠ wne 2933 class class class wbr 5124 ‘cfv 6536 (class class class)co 7410 ℝcr 11133 0cc0 11134 +∞cpnf 11271 -∞cmnf 11272 ℝ^*cxr 11273 < clt 11274 ≤ cle 11275 ℕcn 12245 ℕ₀cn0 12506 ℤcz 12593 ℚcq 12969 ↑cexp 14084 abscabs 15258 ∥ cdvds 16277 gcd cgcd 16518 ℙcprime 16695 pCnt cpc 16861

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2708 ax-sep 5271 ax-nul 5281 ax-pow 5340 ax-pr 5407 ax-un 7734 ax-cnex 11190 ax-resscn 11191 ax-1cn 11192 ax-icn 11193 ax-addcl 11194 ax-addrcl 11195 ax-mulcl 11196 ax-mulrcl 11197 ax-mulcom 11198 ax-addass 11199 ax-mulass 11200 ax-distr 11201 ax-i2m1 11202 ax-1ne0 11203 ax-1rid 11204 ax-rnegex 11205 ax-rrecex 11206 ax-cnre 11207 ax-pre-lttri 11208 ax-pre-lttrn 11209 ax-pre-ltadd 11210 ax-pre-mulgt0 11211 ax-pre-sup 11212

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2810 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-rmo 3364 df-reu 3365 df-rab 3421 df-v 3466 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4889 df-iun 4974 df-br 5125 df-opab 5187 df-mpt 5207 df-tr 5235 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6295 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7867 df-1st 7993 df-2nd 7994 df-frecs 8285 df-wrecs 8316 df-recs 8390 df-rdg 8429 df-1o 8485 df-2o 8486 df-er 8724 df-en 8965 df-dom 8966 df-sdom 8967 df-fin 8968 df-sup 9459 df-inf 9460 df-pnf 11276 df-mnf 11277 df-xr 11278 df-ltxr 11279 df-le 11280 df-sub 11473 df-neg 11474 df-div 11900 df-nn 12246 df-2 12308 df-3 12309 df-n0 12507 df-z 12594 df-uz 12858 df-q 12970 df-rp 13014 df-fl 13814 df-mod 13892 df-seq 14025 df-exp 14085 df-cj 15123 df-re 15124 df-im 15125 df-sqrt 15259 df-abs 15260 df-dvds 16278 df-gcd 16519 df-prm 16696 df-pc 16862

This theorem is referenced by: pcgcd 16903

W3C validator