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Theorem znidomb 21117

Description: The ℤ/nℤ structure is a domain (and hence a field) precisely when 𝑛 is prime. (Contributed by Mario Carneiro, 15-Jun-2015.)

**Hypothesis**
Ref	Expression
zntos.y	⊢ 𝑌 = (ℤ/nℤ‘𝑁)

**Assertion**
Ref	Expression
znidomb	⊢ (𝑁 ∈ ℕ → (𝑌 ∈ IDomn ↔ 𝑁 ∈ ℙ))

Proof of Theorem znidomb Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		2z 12594	. . . . . 6 ⊢ 2 ∈ ℤ
2	1	a1i 11	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 2 ∈ ℤ)
3		nnz 12579	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
4	3	adantr 482	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 𝑁 ∈ ℤ)
5		hash2 14365	. . . . . . 7 ⊢ (♯‘2_o) = 2
6		isidom 20922	. . . . . . . . . . . 12 ⊢ (𝑌 ∈ IDomn ↔ (𝑌 ∈ CRing ∧ 𝑌 ∈ Domn))
7	6	simprbi 498	. . . . . . . . . . 11 ⊢ (𝑌 ∈ IDomn → 𝑌 ∈ Domn)
8		domnnzr 20911	. . . . . . . . . . 11 ⊢ (𝑌 ∈ Domn → 𝑌 ∈ NzRing)
9	7, 8	syl 17	. . . . . . . . . 10 ⊢ (𝑌 ∈ IDomn → 𝑌 ∈ NzRing)
10		eqid 2733	. . . . . . . . . . . 12 ⊢ (Base‘𝑌) = (Base‘𝑌)
11	10	isnzr2 20297	. . . . . . . . . . 11 ⊢ (𝑌 ∈ NzRing ↔ (𝑌 ∈ Ring ∧ 2_o ≼ (Base‘𝑌)))
12	11	simprbi 498	. . . . . . . . . 10 ⊢ (𝑌 ∈ NzRing → 2_o ≼ (Base‘𝑌))
13	9, 12	syl 17	. . . . . . . . 9 ⊢ (𝑌 ∈ IDomn → 2_o ≼ (Base‘𝑌))
14	13	adantl 483	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 2_o ≼ (Base‘𝑌))
15		df2o2 8475	. . . . . . . . . 10 ⊢ 2_o = {∅, {∅}}
16		prfi 9322	. . . . . . . . . 10 ⊢ {∅, {∅}} ∈ Fin
17	15, 16	eqeltri 2830	. . . . . . . . 9 ⊢ 2_o ∈ Fin
18		fvex 6905	. . . . . . . . 9 ⊢ (Base‘𝑌) ∈ V
19		hashdom 14339	. . . . . . . . 9 ⊢ ((2_o ∈ Fin ∧ (Base‘𝑌) ∈ V) → ((♯‘2_o) ≤ (♯‘(Base‘𝑌)) ↔ 2_o ≼ (Base‘𝑌)))
20	17, 18, 19	mp2an 691	. . . . . . . 8 ⊢ ((♯‘2_o) ≤ (♯‘(Base‘𝑌)) ↔ 2_o ≼ (Base‘𝑌))
21	14, 20	sylibr 233	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → (♯‘2_o) ≤ (♯‘(Base‘𝑌)))
22	5, 21	eqbrtrrid 5185	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 2 ≤ (♯‘(Base‘𝑌)))
23		zntos.y	. . . . . . . 8 ⊢ 𝑌 = (ℤ/nℤ‘𝑁)
24	23, 10	znhash 21114	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (♯‘(Base‘𝑌)) = 𝑁)
25	24	adantr 482	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → (♯‘(Base‘𝑌)) = 𝑁)
26	22, 25	breqtrd 5175	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 2 ≤ 𝑁)
27		eluz2 12828	. . . . 5 ⊢ (𝑁 ∈ (ℤ_≥‘2) ↔ (2 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 2 ≤ 𝑁))
28	2, 4, 26, 27	syl3anbrc 1344	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 𝑁 ∈ (ℤ_≥‘2))
29		nncn 12220	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ)
30	29	ad2antrr 725	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∈ ℂ)
31		nncn 12220	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℂ)
32	31	ad2antrl 727	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∈ ℂ)
33		nnne0 12246	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → 𝑥 ≠ 0)
34	33	ad2antrl 727	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ≠ 0)
35	30, 32, 34	divcan1d 11991	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((𝑁 / 𝑥) · 𝑥) = 𝑁)
36	35	fveq2d 6896	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘((𝑁 / 𝑥) · 𝑥)) = ((ℤRHom‘𝑌)‘𝑁))
37	7	ad2antlr 726	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑌 ∈ Domn)
38		domnring 20912	. . . . . . . . . . . 12 ⊢ (𝑌 ∈ Domn → 𝑌 ∈ Ring)
39	37, 38	syl 17	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑌 ∈ Ring)
40		eqid 2733	. . . . . . . . . . . 12 ⊢ (ℤRHom‘𝑌) = (ℤRHom‘𝑌)
41	40	zrhrhm 21061	. . . . . . . . . . 11 ⊢ (𝑌 ∈ Ring → (ℤRHom‘𝑌) ∈ (ℤ_ring RingHom 𝑌))
42	39, 41	syl 17	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (ℤRHom‘𝑌) ∈ (ℤ_ring RingHom 𝑌))
43		simprr 772	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∥ 𝑁)
44		nnz 12579	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℤ)
45	44	ad2antrl 727	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∈ ℤ)
46	3	ad2antrr 725	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∈ ℤ)
47		dvdsval2 16200	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℤ ∧ 𝑥 ≠ 0 ∧ 𝑁 ∈ ℤ) → (𝑥 ∥ 𝑁 ↔ (𝑁 / 𝑥) ∈ ℤ))
48	45, 34, 46, 47	syl3anc 1372	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑥 ∥ 𝑁 ↔ (𝑁 / 𝑥) ∈ ℤ))
49	43, 48	mpbid 231	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 / 𝑥) ∈ ℤ)
50		zringbas 21023	. . . . . . . . . . 11 ⊢ ℤ = (Base‘ℤ_ring)
51		zringmulr 21027	. . . . . . . . . . 11 ⊢ · = (._r‘ℤ_ring)
52		eqid 2733	. . . . . . . . . . 11 ⊢ (._r‘𝑌) = (._r‘𝑌)
53	50, 51, 52	rhmmul 20264	. . . . . . . . . 10 ⊢ (((ℤRHom‘𝑌) ∈ (ℤ_ring RingHom 𝑌) ∧ (𝑁 / 𝑥) ∈ ℤ ∧ 𝑥 ∈ ℤ) → ((ℤRHom‘𝑌)‘((𝑁 / 𝑥) · 𝑥)) = (((ℤRHom‘𝑌)‘(𝑁 / 𝑥))(._r‘𝑌)((ℤRHom‘𝑌)‘𝑥)))
54	42, 49, 45, 53	syl3anc 1372	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘((𝑁 / 𝑥) · 𝑥)) = (((ℤRHom‘𝑌)‘(𝑁 / 𝑥))(._r‘𝑌)((ℤRHom‘𝑌)‘𝑥)))
55		iddvds 16213	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℤ → 𝑁 ∥ 𝑁)
56	46, 55	syl 17	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∥ 𝑁)
57		nnnn0 12479	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
58	57	ad2antrr 725	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∈ ℕ₀)
59		eqid 2733	. . . . . . . . . . . 12 ⊢ (0_g‘𝑌) = (0_g‘𝑌)
60	23, 40, 59	zndvds0 21106	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ₀ ∧ 𝑁 ∈ ℤ) → (((ℤRHom‘𝑌)‘𝑁) = (0_g‘𝑌) ↔ 𝑁 ∥ 𝑁))
61	58, 46, 60	syl2anc 585	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘𝑁) = (0_g‘𝑌) ↔ 𝑁 ∥ 𝑁))
62	56, 61	mpbird 257	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘𝑁) = (0_g‘𝑌))
63	36, 54, 62	3eqtr3d 2781	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘(𝑁 / 𝑥))(._r‘𝑌)((ℤRHom‘𝑌)‘𝑥)) = (0_g‘𝑌))
64	50, 10	rhmf 20263	. . . . . . . . . . 11 ⊢ ((ℤRHom‘𝑌) ∈ (ℤ_ring RingHom 𝑌) → (ℤRHom‘𝑌):ℤ⟶(Base‘𝑌))
65	42, 64	syl 17	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (ℤRHom‘𝑌):ℤ⟶(Base‘𝑌))
66	65, 49	ffvelcdmd 7088	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) ∈ (Base‘𝑌))
67	65, 45	ffvelcdmd 7088	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘𝑥) ∈ (Base‘𝑌))
68	10, 52, 59	domneq0 20913	. . . . . . . . 9 ⊢ ((𝑌 ∈ Domn ∧ ((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) ∈ (Base‘𝑌) ∧ ((ℤRHom‘𝑌)‘𝑥) ∈ (Base‘𝑌)) → ((((ℤRHom‘𝑌)‘(𝑁 / 𝑥))(._r‘𝑌)((ℤRHom‘𝑌)‘𝑥)) = (0_g‘𝑌) ↔ (((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) ∨ ((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌))))
69	37, 66, 67, 68	syl3anc 1372	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((((ℤRHom‘𝑌)‘(𝑁 / 𝑥))(._r‘𝑌)((ℤRHom‘𝑌)‘𝑥)) = (0_g‘𝑌) ↔ (((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) ∨ ((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌))))
70	63, 69	mpbid 231	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) ∨ ((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌)))
71	23, 40, 59	zndvds0 21106	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ₀ ∧ (𝑁 / 𝑥) ∈ ℤ) → (((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) ↔ 𝑁 ∥ (𝑁 / 𝑥)))
72	58, 49, 71	syl2anc 585	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) ↔ 𝑁 ∥ (𝑁 / 𝑥)))
73		nnre 12219	. . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ)
74	73	ad2antrr 725	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∈ ℝ)
75		nnre 12219	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℝ)
76	75	ad2antrl 727	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∈ ℝ)
77		nngt0 12243	. . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℕ → 0 < 𝑁)
78	77	ad2antrr 725	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 0 < 𝑁)
79		nngt0 12243	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ℕ → 0 < 𝑥)
80	79	ad2antrl 727	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 0 < 𝑥)
81	74, 76, 78, 80	divgt0d 12149	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 0 < (𝑁 / 𝑥))
82		elnnz 12568	. . . . . . . . . . . 12 ⊢ ((𝑁 / 𝑥) ∈ ℕ ↔ ((𝑁 / 𝑥) ∈ ℤ ∧ 0 < (𝑁 / 𝑥)))
83	49, 81, 82	sylanbrc 584	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 / 𝑥) ∈ ℕ)
84		dvdsle 16253	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℤ ∧ (𝑁 / 𝑥) ∈ ℕ) → (𝑁 ∥ (𝑁 / 𝑥) → 𝑁 ≤ (𝑁 / 𝑥)))
85	46, 83, 84	syl2anc 585	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 ∥ (𝑁 / 𝑥) → 𝑁 ≤ (𝑁 / 𝑥)))
86		1red 11215	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 1 ∈ ℝ)
87		0lt1 11736	. . . . . . . . . . . . 13 ⊢ 0 < 1
88	87	a1i 11	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 0 < 1)
89		lediv2 12104	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ ℝ ∧ 0 < 𝑥) ∧ (1 ∈ ℝ ∧ 0 < 1) ∧ (𝑁 ∈ ℝ ∧ 0 < 𝑁)) → (𝑥 ≤ 1 ↔ (𝑁 / 1) ≤ (𝑁 / 𝑥)))
90	76, 80, 86, 88, 74, 78, 89	syl222anc 1387	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑥 ≤ 1 ↔ (𝑁 / 1) ≤ (𝑁 / 𝑥)))
91		nnle1eq1 12242	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → (𝑥 ≤ 1 ↔ 𝑥 = 1))
92	91	ad2antrl 727	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑥 ≤ 1 ↔ 𝑥 = 1))
93	30	div1d 11982	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 / 1) = 𝑁)
94	93	breq1d 5159	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((𝑁 / 1) ≤ (𝑁 / 𝑥) ↔ 𝑁 ≤ (𝑁 / 𝑥)))
95	90, 92, 94	3bitr3rd 310	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 ≤ (𝑁 / 𝑥) ↔ 𝑥 = 1))
96	85, 95	sylibd 238	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 ∥ (𝑁 / 𝑥) → 𝑥 = 1))
97	72, 96	sylbid 239	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) → 𝑥 = 1))
98	23, 40, 59	zndvds0 21106	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ₀ ∧ 𝑥 ∈ ℤ) → (((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌) ↔ 𝑁 ∥ 𝑥))
99	58, 45, 98	syl2anc 585	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌) ↔ 𝑁 ∥ 𝑥))
100		nnnn0 12479	. . . . . . . . . . 11 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℕ₀)
101	100	ad2antrl 727	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∈ ℕ₀)
102		dvdseq 16257	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) ∧ (𝑥 ∥ 𝑁 ∧ 𝑁 ∥ 𝑥)) → 𝑥 = 𝑁)
103	102	expr 458	. . . . . . . . . 10 ⊢ (((𝑥 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) ∧ 𝑥 ∥ 𝑁) → (𝑁 ∥ 𝑥 → 𝑥 = 𝑁))
104	101, 58, 43, 103	syl21anc 837	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 ∥ 𝑥 → 𝑥 = 𝑁))
105	99, 104	sylbid 239	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌) → 𝑥 = 𝑁))
106	97, 105	orim12d 964	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) ∨ ((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌)) → (𝑥 = 1 ∨ 𝑥 = 𝑁)))
107	70, 106	mpd 15	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑥 = 1 ∨ 𝑥 = 𝑁))
108	107	expr 458	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ 𝑥 ∈ ℕ) → (𝑥 ∥ 𝑁 → (𝑥 = 1 ∨ 𝑥 = 𝑁)))
109	108	ralrimiva 3147	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → ∀𝑥 ∈ ℕ (𝑥 ∥ 𝑁 → (𝑥 = 1 ∨ 𝑥 = 𝑁)))
110		isprm2 16619	. . . 4 ⊢ (𝑁 ∈ ℙ ↔ (𝑁 ∈ (ℤ_≥‘2) ∧ ∀𝑥 ∈ ℕ (𝑥 ∥ 𝑁 → (𝑥 = 1 ∨ 𝑥 = 𝑁))))
111	28, 109, 110	sylanbrc 584	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 𝑁 ∈ ℙ)
112	111	ex 414	. 2 ⊢ (𝑁 ∈ ℕ → (𝑌 ∈ IDomn → 𝑁 ∈ ℙ))
113	23	znfld 21116	. . 3 ⊢ (𝑁 ∈ ℙ → 𝑌 ∈ Field)
114		fldidom 20923	. . 3 ⊢ (𝑌 ∈ Field → 𝑌 ∈ IDomn)
115	113, 114	syl 17	. 2 ⊢ (𝑁 ∈ ℙ → 𝑌 ∈ IDomn)
116	112, 115	impbid1 224	1 ⊢ (𝑁 ∈ ℕ → (𝑌 ∈ IDomn ↔ 𝑁 ∈ ℙ))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∨ wo 846 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 ∀wral 3062 Vcvv 3475 ∅c0 4323 {csn 4629 {cpr 4631 class class class wbr 5149 ⟶wf 6540 ‘cfv 6544 (class class class)co 7409 2_oc2o 8460 ≼ cdom 8937 Fincfn 8939 ℂcc 11108 ℝcr 11109 0cc0 11110 1c1 11111 · cmul 11115 < clt 11248 ≤ cle 11249 / cdiv 11871 ℕcn 12212 2c2 12267 ℕ₀cn0 12472 ℤcz 12558 ℤ_≥cuz 12822 ♯chash 14290 ∥ cdvds 16197 ℙcprime 16608 Basecbs 17144 ._rcmulr 17198 0_gc0g 17385 Ringcrg 20056 CRingccrg 20057 RingHom crh 20248 NzRingcnzr 20291 Fieldcfield 20358 Domncdomn 20896 IDomncidom 20897 ℤ_ringczring 21017 ℤRHomczrh 21049 ℤ/nℤczn 21052

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 ax-pre-sup 11188 ax-addf 11189 ax-mulf 11190

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4910 df-int 4952 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7856 df-1st 7975 df-2nd 7976 df-tpos 8211 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-1o 8466 df-2o 8467 df-oadd 8470 df-er 8703 df-ec 8705 df-qs 8709 df-map 8822 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-sup 9437 df-inf 9438 df-dju 9896 df-card 9934 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-div 11872 df-nn 12213 df-2 12275 df-3 12276 df-4 12277 df-5 12278 df-6 12279 df-7 12280 df-8 12281 df-9 12282 df-n0 12473 df-xnn0 12545 df-z 12559 df-dec 12678 df-uz 12823 df-rp 12975 df-fz 13485 df-fzo 13628 df-fl 13757 df-mod 13835 df-seq 13967 df-exp 14028 df-hash 14291 df-cj 15046 df-re 15047 df-im 15048 df-sqrt 15182 df-abs 15183 df-dvds 16198 df-gcd 16436 df-prm 16609 df-struct 17080 df-sets 17097 df-slot 17115 df-ndx 17127 df-base 17145 df-ress 17174 df-plusg 17210 df-mulr 17211 df-starv 17212 df-sca 17213 df-vsca 17214 df-ip 17215 df-tset 17216 df-ple 17217 df-ds 17219 df-unif 17220 df-0g 17387 df-imas 17454 df-qus 17455 df-mgm 18561 df-sgrp 18610 df-mnd 18626 df-mhm 18671 df-grp 18822 df-minusg 18823 df-sbg 18824 df-mulg 18951 df-subg 19003 df-nsg 19004 df-eqg 19005 df-ghm 19090 df-cmn 19650 df-abl 19651 df-mgp 19988 df-ur 20005 df-ring 20058 df-cring 20059 df-oppr 20150 df-dvdsr 20171 df-unit 20172 df-invr 20202 df-rnghom 20251 df-nzr 20292 df-subrg 20317 df-drng 20359 df-field 20360 df-lmod 20473 df-lss 20543 df-lsp 20583 df-sra 20785 df-rgmod 20786 df-lidl 20787 df-rsp 20788 df-2idl 20857 df-rlreg 20899 df-domn 20900 df-idom 20901 df-cnfld 20945 df-zring 21018 df-zrh 21053 df-zn 21056

This theorem is referenced by: (None)

W3C validator