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Theorem znidomb 21336

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 12598	. . . . . 6 ⊢ 2 ∈ ℤ
2	1	a1i 11	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 2 ∈ ℤ)
3		nnz 12583	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
4	3	adantr 481	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 𝑁 ∈ ℤ)
5		hash2 14369	. . . . . . 7 ⊢ (♯‘2_o) = 2
6		isidom 21122	. . . . . . . . . . . 12 ⊢ (𝑌 ∈ IDomn ↔ (𝑌 ∈ CRing ∧ 𝑌 ∈ Domn))
7	6	simprbi 497	. . . . . . . . . . 11 ⊢ (𝑌 ∈ IDomn → 𝑌 ∈ Domn)
8		domnnzr 21111	. . . . . . . . . . 11 ⊢ (𝑌 ∈ Domn → 𝑌 ∈ NzRing)
9	7, 8	syl 17	. . . . . . . . . 10 ⊢ (𝑌 ∈ IDomn → 𝑌 ∈ NzRing)
10		eqid 2732	. . . . . . . . . . . 12 ⊢ (Base‘𝑌) = (Base‘𝑌)
11	10	isnzr2 20409	. . . . . . . . . . 11 ⊢ (𝑌 ∈ NzRing ↔ (𝑌 ∈ Ring ∧ 2_o ≼ (Base‘𝑌)))
12	11	simprbi 497	. . . . . . . . . 10 ⊢ (𝑌 ∈ NzRing → 2_o ≼ (Base‘𝑌))
13	9, 12	syl 17	. . . . . . . . 9 ⊢ (𝑌 ∈ IDomn → 2_o ≼ (Base‘𝑌))
14	13	adantl 482	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 2_o ≼ (Base‘𝑌))
15		df2o2 8477	. . . . . . . . . 10 ⊢ 2_o = {∅, {∅}}
16		prfi 9324	. . . . . . . . . 10 ⊢ {∅, {∅}} ∈ Fin
17	15, 16	eqeltri 2829	. . . . . . . . 9 ⊢ 2_o ∈ Fin
18		fvex 6904	. . . . . . . . 9 ⊢ (Base‘𝑌) ∈ V
19		hashdom 14343	. . . . . . . . 9 ⊢ ((2_o ∈ Fin ∧ (Base‘𝑌) ∈ V) → ((♯‘2_o) ≤ (♯‘(Base‘𝑌)) ↔ 2_o ≼ (Base‘𝑌)))
20	17, 18, 19	mp2an 690	. . . . . . . 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 5184	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 2 ≤ (♯‘(Base‘𝑌)))
23		zntos.y	. . . . . . . 8 ⊢ 𝑌 = (ℤ/nℤ‘𝑁)
24	23, 10	znhash 21333	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (♯‘(Base‘𝑌)) = 𝑁)
25	24	adantr 481	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → (♯‘(Base‘𝑌)) = 𝑁)
26	22, 25	breqtrd 5174	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 2 ≤ 𝑁)
27		eluz2 12832	. . . . 5 ⊢ (𝑁 ∈ (ℤ_≥‘2) ↔ (2 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 2 ≤ 𝑁))
28	2, 4, 26, 27	syl3anbrc 1343	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 𝑁 ∈ (ℤ_≥‘2))
29		nncn 12224	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ)
30	29	ad2antrr 724	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∈ ℂ)
31		nncn 12224	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℂ)
32	31	ad2antrl 726	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∈ ℂ)
33		nnne0 12250	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → 𝑥 ≠ 0)
34	33	ad2antrl 726	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ≠ 0)
35	30, 32, 34	divcan1d 11995	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((𝑁 / 𝑥) · 𝑥) = 𝑁)
36	35	fveq2d 6895	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘((𝑁 / 𝑥) · 𝑥)) = ((ℤRHom‘𝑌)‘𝑁))
37	7	ad2antlr 725	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑌 ∈ Domn)
38		domnring 21112	. . . . . . . . . . . 12 ⊢ (𝑌 ∈ Domn → 𝑌 ∈ Ring)
39	37, 38	syl 17	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑌 ∈ Ring)
40		eqid 2732	. . . . . . . . . . . 12 ⊢ (ℤRHom‘𝑌) = (ℤRHom‘𝑌)
41	40	zrhrhm 21280	. . . . . . . . . . 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 771	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∥ 𝑁)
44		nnz 12583	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℤ)
45	44	ad2antrl 726	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∈ ℤ)
46	3	ad2antrr 724	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∈ ℤ)
47		dvdsval2 16204	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℤ ∧ 𝑥 ≠ 0 ∧ 𝑁 ∈ ℤ) → (𝑥 ∥ 𝑁 ↔ (𝑁 / 𝑥) ∈ ℤ))
48	45, 34, 46, 47	syl3anc 1371	. . . . . . . . . . 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 21224	. . . . . . . . . . 11 ⊢ ℤ = (Base‘ℤ_ring)
51		zringmulr 21228	. . . . . . . . . . 11 ⊢ · = (._r‘ℤ_ring)
52		eqid 2732	. . . . . . . . . . 11 ⊢ (._r‘𝑌) = (._r‘𝑌)
53	50, 51, 52	rhmmul 20377	. . . . . . . . . 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 1371	. . . . . . . . 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 16217	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℤ → 𝑁 ∥ 𝑁)
56	46, 55	syl 17	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∥ 𝑁)
57		nnnn0 12483	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
58	57	ad2antrr 724	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∈ ℕ₀)
59		eqid 2732	. . . . . . . . . . . 12 ⊢ (0_g‘𝑌) = (0_g‘𝑌)
60	23, 40, 59	zndvds0 21325	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ₀ ∧ 𝑁 ∈ ℤ) → (((ℤRHom‘𝑌)‘𝑁) = (0_g‘𝑌) ↔ 𝑁 ∥ 𝑁))
61	58, 46, 60	syl2anc 584	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘𝑁) = (0_g‘𝑌) ↔ 𝑁 ∥ 𝑁))
62	56, 61	mpbird 256	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘𝑁) = (0_g‘𝑌))
63	36, 54, 62	3eqtr3d 2780	. . . . . . . 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 20376	. . . . . . . . . . 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 7087	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) ∈ (Base‘𝑌))
67	65, 45	ffvelcdmd 7087	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((ℤRHom‘𝑌)‘𝑥) ∈ (Base‘𝑌))
68	10, 52, 59	domneq0 21113	. . . . . . . . 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 1371	. . . . . . . 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 21325	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ₀ ∧ (𝑁 / 𝑥) ∈ ℤ) → (((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) ↔ 𝑁 ∥ (𝑁 / 𝑥)))
72	58, 49, 71	syl2anc 584	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘(𝑁 / 𝑥)) = (0_g‘𝑌) ↔ 𝑁 ∥ (𝑁 / 𝑥)))
73		nnre 12223	. . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ)
74	73	ad2antrr 724	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑁 ∈ ℝ)
75		nnre 12223	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℝ)
76	75	ad2antrl 726	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∈ ℝ)
77		nngt0 12247	. . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℕ → 0 < 𝑁)
78	77	ad2antrr 724	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 0 < 𝑁)
79		nngt0 12247	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ℕ → 0 < 𝑥)
80	79	ad2antrl 726	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 0 < 𝑥)
81	74, 76, 78, 80	divgt0d 12153	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 0 < (𝑁 / 𝑥))
82		elnnz 12572	. . . . . . . . . . . 12 ⊢ ((𝑁 / 𝑥) ∈ ℕ ↔ ((𝑁 / 𝑥) ∈ ℤ ∧ 0 < (𝑁 / 𝑥)))
83	49, 81, 82	sylanbrc 583	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 / 𝑥) ∈ ℕ)
84		dvdsle 16257	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℤ ∧ (𝑁 / 𝑥) ∈ ℕ) → (𝑁 ∥ (𝑁 / 𝑥) → 𝑁 ≤ (𝑁 / 𝑥)))
85	46, 83, 84	syl2anc 584	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 ∥ (𝑁 / 𝑥) → 𝑁 ≤ (𝑁 / 𝑥)))
86		1red 11219	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 1 ∈ ℝ)
87		0lt1 11740	. . . . . . . . . . . . 13 ⊢ 0 < 1
88	87	a1i 11	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 0 < 1)
89		lediv2 12108	. . . . . . . . . . . 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 1386	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑥 ≤ 1 ↔ (𝑁 / 1) ≤ (𝑁 / 𝑥)))
91		nnle1eq1 12246	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → (𝑥 ≤ 1 ↔ 𝑥 = 1))
92	91	ad2antrl 726	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑥 ≤ 1 ↔ 𝑥 = 1))
93	30	div1d 11986	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (𝑁 / 1) = 𝑁)
94	93	breq1d 5158	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → ((𝑁 / 1) ≤ (𝑁 / 𝑥) ↔ 𝑁 ≤ (𝑁 / 𝑥)))
95	90, 92, 94	3bitr3rd 309	. . . . . . . . . 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 21325	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ₀ ∧ 𝑥 ∈ ℤ) → (((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌) ↔ 𝑁 ∥ 𝑥))
99	58, 45, 98	syl2anc 584	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → (((ℤRHom‘𝑌)‘𝑥) = (0_g‘𝑌) ↔ 𝑁 ∥ 𝑥))
100		nnnn0 12483	. . . . . . . . . . 11 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℕ₀)
101	100	ad2antrl 726	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ (𝑥 ∈ ℕ ∧ 𝑥 ∥ 𝑁)) → 𝑥 ∈ ℕ₀)
102		dvdseq 16261	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) ∧ (𝑥 ∥ 𝑁 ∧ 𝑁 ∥ 𝑥)) → 𝑥 = 𝑁)
103	102	expr 457	. . . . . . . . . 10 ⊢ (((𝑥 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) ∧ 𝑥 ∥ 𝑁) → (𝑁 ∥ 𝑥 → 𝑥 = 𝑁))
104	101, 58, 43, 103	syl21anc 836	. . . . . . . . 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 963	. . . . . . 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 457	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) ∧ 𝑥 ∈ ℕ) → (𝑥 ∥ 𝑁 → (𝑥 = 1 ∨ 𝑥 = 𝑁)))
109	108	ralrimiva 3146	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → ∀𝑥 ∈ ℕ (𝑥 ∥ 𝑁 → (𝑥 = 1 ∨ 𝑥 = 𝑁)))
110		isprm2 16623	. . . 4 ⊢ (𝑁 ∈ ℙ ↔ (𝑁 ∈ (ℤ_≥‘2) ∧ ∀𝑥 ∈ ℕ (𝑥 ∥ 𝑁 → (𝑥 = 1 ∨ 𝑥 = 𝑁))))
111	28, 109, 110	sylanbrc 583	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑌 ∈ IDomn) → 𝑁 ∈ ℙ)
112	111	ex 413	. 2 ⊢ (𝑁 ∈ ℕ → (𝑌 ∈ IDomn → 𝑁 ∈ ℙ))
113	23	znfld 21335	. . 3 ⊢ (𝑁 ∈ ℙ → 𝑌 ∈ Field)
114		fldidom 21123	. . 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 396 ∨ wo 845 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∀wral 3061 Vcvv 3474 ∅c0 4322 {csn 4628 {cpr 4630 class class class wbr 5148 ⟶wf 6539 ‘cfv 6543 (class class class)co 7411 2_oc2o 8462 ≼ cdom 8939 Fincfn 8941 ℂcc 11110 ℝcr 11111 0cc0 11112 1c1 11113 · cmul 11117 < clt 11252 ≤ cle 11253 / cdiv 11875 ℕcn 12216 2c2 12271 ℕ₀cn0 12476 ℤcz 12562 ℤ_≥cuz 12826 ♯chash 14294 ∥ cdvds 16201 ℙcprime 16612 Basecbs 17148 ._rcmulr 17202 0_gc0g 17389 Ringcrg 20127 CRingccrg 20128 RingHom crh 20360 NzRingcnzr 20403 Fieldcfield 20501 Domncdomn 21096 IDomncidom 21097 ℤ_ringczring 21217 ℤRHomczrh 21268 ℤ/nℤczn 21271

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189 ax-pre-sup 11190 ax-addf 11191 ax-mulf 11192

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 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-tp 4633 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 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-tpos 8213 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-2o 8469 df-oadd 8472 df-er 8705 df-ec 8707 df-qs 8711 df-map 8824 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-sup 9439 df-inf 9440 df-dju 9898 df-card 9936 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-div 11876 df-nn 12217 df-2 12279 df-3 12280 df-4 12281 df-5 12282 df-6 12283 df-7 12284 df-8 12285 df-9 12286 df-n0 12477 df-xnn0 12549 df-z 12563 df-dec 12682 df-uz 12827 df-rp 12979 df-fz 13489 df-fzo 13632 df-fl 13761 df-mod 13839 df-seq 13971 df-exp 14032 df-hash 14295 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-dvds 16202 df-gcd 16440 df-prm 16613 df-struct 17084 df-sets 17101 df-slot 17119 df-ndx 17131 df-base 17149 df-ress 17178 df-plusg 17214 df-mulr 17215 df-starv 17216 df-sca 17217 df-vsca 17218 df-ip 17219 df-tset 17220 df-ple 17221 df-ds 17223 df-unif 17224 df-0g 17391 df-imas 17458 df-qus 17459 df-mgm 18565 df-sgrp 18644 df-mnd 18660 df-mhm 18705 df-grp 18858 df-minusg 18859 df-sbg 18860 df-mulg 18987 df-subg 19039 df-nsg 19040 df-eqg 19041 df-ghm 19128 df-cmn 19691 df-abl 19692 df-mgp 20029 df-rng 20047 df-ur 20076 df-ring 20129 df-cring 20130 df-oppr 20225 df-dvdsr 20248 df-unit 20249 df-invr 20279 df-rhm 20363 df-nzr 20404 df-subrng 20434 df-subrg 20459 df-drng 20502 df-field 20503 df-lmod 20616 df-lss 20687 df-lsp 20727 df-sra 20930 df-rgmod 20931 df-lidl 20932 df-rsp 20933 df-2idl 21006 df-rlreg 21099 df-domn 21100 df-idom 21101 df-cnfld 21145 df-zring 21218 df-zrh 21272 df-zn 21275

This theorem is referenced by: (None)

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