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Theorem crth 12795

Description: The Chinese Remainder Theorem: the function that maps 𝑥 to its remainder classes mod 𝑀 and mod 𝑁 is 1-1 and onto when 𝑀 and 𝑁 are coprime. (Contributed by Mario Carneiro, 24-Feb-2014.) (Proof shortened by Mario Carneiro, 2-May-2016.)

**Hypotheses**
Ref	Expression
crth.1	⊢ 𝑆 = (0..^(𝑀 · 𝑁))
crth.2	⊢ 𝑇 = ((0..^𝑀) × (0..^𝑁))
crth.3	⊢ 𝐹 = (𝑥 ∈ 𝑆 ↦ ⟨(𝑥 mod 𝑀), (𝑥 mod 𝑁)⟩)
crth.4	⊢ (𝜑 → (𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ ∧ (𝑀 gcd 𝑁) = 1))

**Assertion**
Ref	Expression
crth	⊢ (𝜑 → 𝐹:𝑆–1-1-onto→𝑇)

Distinct variable groups: 𝑥,𝑀 𝑥,𝑁 𝑥,𝑆 𝑥,𝑇 𝜑,𝑥 Allowed substitution hint: 𝐹(𝑥)

Proof of Theorem crth Dummy variables 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		elfzoelz 10381	. . . . . 6 ⊢ (𝑥 ∈ (0..^(𝑀 · 𝑁)) → 𝑥 ∈ ℤ)
2		crth.1	. . . . . 6 ⊢ 𝑆 = (0..^(𝑀 · 𝑁))
3	1, 2	eleq2s 2326	. . . . 5 ⊢ (𝑥 ∈ 𝑆 → 𝑥 ∈ ℤ)
4		simpr 110	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ℤ) → 𝑥 ∈ ℤ)
5		crth.4	. . . . . . . . . 10 ⊢ (𝜑 → (𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ ∧ (𝑀 gcd 𝑁) = 1))
6	5	simp1d 1035	. . . . . . . . 9 ⊢ (𝜑 → 𝑀 ∈ ℕ)
7	6	adantr 276	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ℤ) → 𝑀 ∈ ℕ)
8		zmodfzo 10608	. . . . . . . 8 ⊢ ((𝑥 ∈ ℤ ∧ 𝑀 ∈ ℕ) → (𝑥 mod 𝑀) ∈ (0..^𝑀))
9	4, 7, 8	syl2anc 411	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ℤ) → (𝑥 mod 𝑀) ∈ (0..^𝑀))
10	5	simp2d 1036	. . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ ℕ)
11	10	adantr 276	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ℤ) → 𝑁 ∈ ℕ)
12		zmodfzo 10608	. . . . . . . 8 ⊢ ((𝑥 ∈ ℤ ∧ 𝑁 ∈ ℕ) → (𝑥 mod 𝑁) ∈ (0..^𝑁))
13	4, 11, 12	syl2anc 411	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ℤ) → (𝑥 mod 𝑁) ∈ (0..^𝑁))
14		opelxpi 4757	. . . . . . 7 ⊢ (((𝑥 mod 𝑀) ∈ (0..^𝑀) ∧ (𝑥 mod 𝑁) ∈ (0..^𝑁)) → ⟨(𝑥 mod 𝑀), (𝑥 mod 𝑁)⟩ ∈ ((0..^𝑀) × (0..^𝑁)))
15	9, 13, 14	syl2anc 411	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ℤ) → ⟨(𝑥 mod 𝑀), (𝑥 mod 𝑁)⟩ ∈ ((0..^𝑀) × (0..^𝑁)))
16		crth.2	. . . . . 6 ⊢ 𝑇 = ((0..^𝑀) × (0..^𝑁))
17	15, 16	eleqtrrdi 2325	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ℤ) → ⟨(𝑥 mod 𝑀), (𝑥 mod 𝑁)⟩ ∈ 𝑇)
18	3, 17	sylan2 286	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → ⟨(𝑥 mod 𝑀), (𝑥 mod 𝑁)⟩ ∈ 𝑇)
19		crth.3	. . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝑆 ↦ ⟨(𝑥 mod 𝑀), (𝑥 mod 𝑁)⟩)
20	18, 19	fmptd 5801	. . 3 ⊢ (𝜑 → 𝐹:𝑆⟶𝑇)
21		simprl 531	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑦 ∈ 𝑆)
22		elfzoelz 10381	. . . . . . . . . . . . 13 ⊢ (𝑦 ∈ (0..^(𝑀 · 𝑁)) → 𝑦 ∈ ℤ)
23	22, 2	eleq2s 2326	. . . . . . . . . . . 12 ⊢ (𝑦 ∈ 𝑆 → 𝑦 ∈ ℤ)
24	23	ad2antrl 490	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑦 ∈ ℤ)
25		zq 9859	. . . . . . . . . . 11 ⊢ (𝑦 ∈ ℤ → 𝑦 ∈ ℚ)
26	24, 25	syl 14	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑦 ∈ ℚ)
27	6	adantr 276	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑀 ∈ ℕ)
28		nnq 9866	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℚ)
29	27, 28	syl 14	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑀 ∈ ℚ)
30	27	nngt0d 9186	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 0 < 𝑀)
31	26, 29, 30	modqcld 10589	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑦 mod 𝑀) ∈ ℚ)
32	10	adantr 276	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑁 ∈ ℕ)
33		nnq 9866	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℚ)
34	32, 33	syl 14	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑁 ∈ ℚ)
35	32	nngt0d 9186	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 0 < 𝑁)
36	26, 34, 35	modqcld 10589	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑦 mod 𝑁) ∈ ℚ)
37		opexg 4320	. . . . . . . . 9 ⊢ (((𝑦 mod 𝑀) ∈ ℚ ∧ (𝑦 mod 𝑁) ∈ ℚ) → ⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩ ∈ V)
38	31, 36, 37	syl2anc 411	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩ ∈ V)
39		oveq1 6024	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → (𝑥 mod 𝑀) = (𝑦 mod 𝑀))
40		oveq1 6024	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → (𝑥 mod 𝑁) = (𝑦 mod 𝑁))
41	39, 40	opeq12d 3870	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → ⟨(𝑥 mod 𝑀), (𝑥 mod 𝑁)⟩ = ⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩)
42	41, 19	fvmptg 5722	. . . . . . . 8 ⊢ ((𝑦 ∈ 𝑆 ∧ ⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩ ∈ V) → (𝐹‘𝑦) = ⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩)
43	21, 38, 42	syl2anc 411	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝐹‘𝑦) = ⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩)
44		simprr 533	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑧 ∈ 𝑆)
45		elfzoelz 10381	. . . . . . . . . . . . 13 ⊢ (𝑧 ∈ (0..^(𝑀 · 𝑁)) → 𝑧 ∈ ℤ)
46	45, 2	eleq2s 2326	. . . . . . . . . . . 12 ⊢ (𝑧 ∈ 𝑆 → 𝑧 ∈ ℤ)
47	44, 46	syl 14	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑧 ∈ ℤ)
48		zq 9859	. . . . . . . . . . 11 ⊢ (𝑧 ∈ ℤ → 𝑧 ∈ ℚ)
49	47, 48	syl 14	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑧 ∈ ℚ)
50	49, 29, 30	modqcld 10589	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑧 mod 𝑀) ∈ ℚ)
51	49, 34, 35	modqcld 10589	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑧 mod 𝑁) ∈ ℚ)
52		opexg 4320	. . . . . . . . 9 ⊢ (((𝑧 mod 𝑀) ∈ ℚ ∧ (𝑧 mod 𝑁) ∈ ℚ) → ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩ ∈ V)
53	50, 51, 52	syl2anc 411	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩ ∈ V)
54		oveq1 6024	. . . . . . . . . 10 ⊢ (𝑥 = 𝑧 → (𝑥 mod 𝑀) = (𝑧 mod 𝑀))
55		oveq1 6024	. . . . . . . . . 10 ⊢ (𝑥 = 𝑧 → (𝑥 mod 𝑁) = (𝑧 mod 𝑁))
56	54, 55	opeq12d 3870	. . . . . . . . 9 ⊢ (𝑥 = 𝑧 → ⟨(𝑥 mod 𝑀), (𝑥 mod 𝑁)⟩ = ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩)
57	56, 19	fvmptg 5722	. . . . . . . 8 ⊢ ((𝑧 ∈ 𝑆 ∧ ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩ ∈ V) → (𝐹‘𝑧) = ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩)
58	44, 53, 57	syl2anc 411	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝐹‘𝑧) = ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩)
59	43, 58	eqeq12d 2246	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝐹‘𝑦) = (𝐹‘𝑧) ↔ ⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩ = ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩))
60		opthg 4330	. . . . . . 7 ⊢ (((𝑦 mod 𝑀) ∈ ℚ ∧ (𝑦 mod 𝑁) ∈ ℚ) → (⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩ = ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩ ↔ ((𝑦 mod 𝑀) = (𝑧 mod 𝑀) ∧ (𝑦 mod 𝑁) = (𝑧 mod 𝑁))))
61	31, 36, 60	syl2anc 411	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (⟨(𝑦 mod 𝑀), (𝑦 mod 𝑁)⟩ = ⟨(𝑧 mod 𝑀), (𝑧 mod 𝑁)⟩ ↔ ((𝑦 mod 𝑀) = (𝑧 mod 𝑀) ∧ (𝑦 mod 𝑁) = (𝑧 mod 𝑁))))
62	59, 61	bitrd 188	. . . . 5 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝐹‘𝑦) = (𝐹‘𝑧) ↔ ((𝑦 mod 𝑀) = (𝑧 mod 𝑀) ∧ (𝑦 mod 𝑁) = (𝑧 mod 𝑁))))
63	27	nnzd 9600	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑀 ∈ ℤ)
64	32	nnzd 9600	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑁 ∈ ℤ)
65	21, 2	eleqtrdi 2324	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑦 ∈ (0..^(𝑀 · 𝑁)))
66	65, 22	syl 14	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑦 ∈ ℤ)
67	44, 2	eleqtrdi 2324	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑧 ∈ (0..^(𝑀 · 𝑁)))
68	67, 45	syl 14	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑧 ∈ ℤ)
69	66, 68	zsubcld 9606	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑦 − 𝑧) ∈ ℤ)
70	5	simp3d 1037	. . . . . . . 8 ⊢ (𝜑 → (𝑀 gcd 𝑁) = 1)
71	70	adantr 276	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑀 gcd 𝑁) = 1)
72		coprmdvds2 12664	. . . . . . 7 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ (𝑦 − 𝑧) ∈ ℤ) ∧ (𝑀 gcd 𝑁) = 1) → ((𝑀 ∥ (𝑦 − 𝑧) ∧ 𝑁 ∥ (𝑦 − 𝑧)) → (𝑀 · 𝑁) ∥ (𝑦 − 𝑧)))
73	63, 64, 69, 71, 72	syl31anc 1276	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑀 ∥ (𝑦 − 𝑧) ∧ 𝑁 ∥ (𝑦 − 𝑧)) → (𝑀 · 𝑁) ∥ (𝑦 − 𝑧)))
74		moddvds 12359	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ ∧ 𝑦 ∈ ℤ ∧ 𝑧 ∈ ℤ) → ((𝑦 mod 𝑀) = (𝑧 mod 𝑀) ↔ 𝑀 ∥ (𝑦 − 𝑧)))
75	27, 66, 68, 74	syl3anc 1273	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑦 mod 𝑀) = (𝑧 mod 𝑀) ↔ 𝑀 ∥ (𝑦 − 𝑧)))
76		moddvds 12359	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑦 ∈ ℤ ∧ 𝑧 ∈ ℤ) → ((𝑦 mod 𝑁) = (𝑧 mod 𝑁) ↔ 𝑁 ∥ (𝑦 − 𝑧)))
77	32, 66, 68, 76	syl3anc 1273	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑦 mod 𝑁) = (𝑧 mod 𝑁) ↔ 𝑁 ∥ (𝑦 − 𝑧)))
78	75, 77	anbi12d 473	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (((𝑦 mod 𝑀) = (𝑧 mod 𝑀) ∧ (𝑦 mod 𝑁) = (𝑧 mod 𝑁)) ↔ (𝑀 ∥ (𝑦 − 𝑧) ∧ 𝑁 ∥ (𝑦 − 𝑧))))
79		qmulcl 9870	. . . . . . . . . 10 ⊢ ((𝑀 ∈ ℚ ∧ 𝑁 ∈ ℚ) → (𝑀 · 𝑁) ∈ ℚ)
80	29, 34, 79	syl2anc 411	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑀 · 𝑁) ∈ ℚ)
81		elfzole1 10390	. . . . . . . . . 10 ⊢ (𝑦 ∈ (0..^(𝑀 · 𝑁)) → 0 ≤ 𝑦)
82	65, 81	syl 14	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 0 ≤ 𝑦)
83		elfzolt2 10391	. . . . . . . . . 10 ⊢ (𝑦 ∈ (0..^(𝑀 · 𝑁)) → 𝑦 < (𝑀 · 𝑁))
84	65, 83	syl 14	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑦 < (𝑀 · 𝑁))
85		modqid 10610	. . . . . . . . 9 ⊢ (((𝑦 ∈ ℚ ∧ (𝑀 · 𝑁) ∈ ℚ) ∧ (0 ≤ 𝑦 ∧ 𝑦 < (𝑀 · 𝑁))) → (𝑦 mod (𝑀 · 𝑁)) = 𝑦)
86	26, 80, 82, 84, 85	syl22anc 1274	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑦 mod (𝑀 · 𝑁)) = 𝑦)
87		elfzole1 10390	. . . . . . . . . 10 ⊢ (𝑧 ∈ (0..^(𝑀 · 𝑁)) → 0 ≤ 𝑧)
88	67, 87	syl 14	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 0 ≤ 𝑧)
89		elfzolt2 10391	. . . . . . . . . 10 ⊢ (𝑧 ∈ (0..^(𝑀 · 𝑁)) → 𝑧 < (𝑀 · 𝑁))
90	67, 89	syl 14	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → 𝑧 < (𝑀 · 𝑁))
91		modqid 10610	. . . . . . . . 9 ⊢ (((𝑧 ∈ ℚ ∧ (𝑀 · 𝑁) ∈ ℚ) ∧ (0 ≤ 𝑧 ∧ 𝑧 < (𝑀 · 𝑁))) → (𝑧 mod (𝑀 · 𝑁)) = 𝑧)
92	49, 80, 88, 90, 91	syl22anc 1274	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑧 mod (𝑀 · 𝑁)) = 𝑧)
93	86, 92	eqeq12d 2246	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑦 mod (𝑀 · 𝑁)) = (𝑧 mod (𝑀 · 𝑁)) ↔ 𝑦 = 𝑧))
94	27, 32	nnmulcld 9191	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑀 · 𝑁) ∈ ℕ)
95		moddvds 12359	. . . . . . . 8 ⊢ (((𝑀 · 𝑁) ∈ ℕ ∧ 𝑦 ∈ ℤ ∧ 𝑧 ∈ ℤ) → ((𝑦 mod (𝑀 · 𝑁)) = (𝑧 mod (𝑀 · 𝑁)) ↔ (𝑀 · 𝑁) ∥ (𝑦 − 𝑧)))
96	94, 66, 68, 95	syl3anc 1273	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑦 mod (𝑀 · 𝑁)) = (𝑧 mod (𝑀 · 𝑁)) ↔ (𝑀 · 𝑁) ∥ (𝑦 − 𝑧)))
97	93, 96	bitr3d 190	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑦 = 𝑧 ↔ (𝑀 · 𝑁) ∥ (𝑦 − 𝑧)))
98	73, 78, 97	3imtr4d 203	. . . . 5 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (((𝑦 mod 𝑀) = (𝑧 mod 𝑀) ∧ (𝑦 mod 𝑁) = (𝑧 mod 𝑁)) → 𝑦 = 𝑧))
99	62, 98	sylbid 150	. . . 4 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝐹‘𝑦) = (𝐹‘𝑧) → 𝑦 = 𝑧))
100	99	ralrimivva 2614	. . 3 ⊢ (𝜑 → ∀𝑦 ∈ 𝑆 ∀𝑧 ∈ 𝑆 ((𝐹‘𝑦) = (𝐹‘𝑧) → 𝑦 = 𝑧))
101		dff13 5908	. . 3 ⊢ (𝐹:𝑆–1-1→𝑇 ↔ (𝐹:𝑆⟶𝑇 ∧ ∀𝑦 ∈ 𝑆 ∀𝑧 ∈ 𝑆 ((𝐹‘𝑦) = (𝐹‘𝑧) → 𝑦 = 𝑧)))
102	20, 100, 101	sylanbrc 417	. 2 ⊢ (𝜑 → 𝐹:𝑆–1-1→𝑇)
103		nnnn0 9408	. . . . . 6 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℕ₀)
104		nnnn0 9408	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
105		hashfzo0 11086	. . . . . . . . 9 ⊢ (𝑀 ∈ ℕ₀ → (♯‘(0..^𝑀)) = 𝑀)
106		hashfzo0 11086	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ₀ → (♯‘(0..^𝑁)) = 𝑁)
107	105, 106	oveqan12d 6036	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → ((♯‘(0..^𝑀)) · (♯‘(0..^𝑁))) = (𝑀 · 𝑁))
108		0z 9489	. . . . . . . . . 10 ⊢ 0 ∈ ℤ
109		simpl 109	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → 𝑀 ∈ ℕ₀)
110	109	nn0zd 9599	. . . . . . . . . 10 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → 𝑀 ∈ ℤ)
111		fzofig 10693	. . . . . . . . . 10 ⊢ ((0 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (0..^𝑀) ∈ Fin)
112	108, 110, 111	sylancr 414	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (0..^𝑀) ∈ Fin)
113		nn0z 9498	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ₀ → 𝑁 ∈ ℤ)
114	113	adantl 277	. . . . . . . . . 10 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → 𝑁 ∈ ℤ)
115		fzofig 10693	. . . . . . . . . 10 ⊢ ((0 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (0..^𝑁) ∈ Fin)
116	108, 114, 115	sylancr 414	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (0..^𝑁) ∈ Fin)
117		hashxp 11089	. . . . . . . . 9 ⊢ (((0..^𝑀) ∈ Fin ∧ (0..^𝑁) ∈ Fin) → (♯‘((0..^𝑀) × (0..^𝑁))) = ((♯‘(0..^𝑀)) · (♯‘(0..^𝑁))))
118	112, 116, 117	syl2anc 411	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (♯‘((0..^𝑀) × (0..^𝑁))) = ((♯‘(0..^𝑀)) · (♯‘(0..^𝑁))))
119		nn0mulcl 9437	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (𝑀 · 𝑁) ∈ ℕ₀)
120		hashfzo0 11086	. . . . . . . . 9 ⊢ ((𝑀 · 𝑁) ∈ ℕ₀ → (♯‘(0..^(𝑀 · 𝑁))) = (𝑀 · 𝑁))
121	119, 120	syl 14	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (♯‘(0..^(𝑀 · 𝑁))) = (𝑀 · 𝑁))
122	107, 118, 121	3eqtr4rd 2275	. . . . . . 7 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (♯‘(0..^(𝑀 · 𝑁))) = (♯‘((0..^𝑀) × (0..^𝑁))))
123	119	nn0zd 9599	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (𝑀 · 𝑁) ∈ ℤ)
124		fzofig 10693	. . . . . . . . 9 ⊢ ((0 ∈ ℤ ∧ (𝑀 · 𝑁) ∈ ℤ) → (0..^(𝑀 · 𝑁)) ∈ Fin)
125	108, 123, 124	sylancr 414	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (0..^(𝑀 · 𝑁)) ∈ Fin)
126		xpfi 7123	. . . . . . . . 9 ⊢ (((0..^𝑀) ∈ Fin ∧ (0..^𝑁) ∈ Fin) → ((0..^𝑀) × (0..^𝑁)) ∈ Fin)
127	112, 116, 126	syl2anc 411	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → ((0..^𝑀) × (0..^𝑁)) ∈ Fin)
128		hashen 11045	. . . . . . . 8 ⊢ (((0..^(𝑀 · 𝑁)) ∈ Fin ∧ ((0..^𝑀) × (0..^𝑁)) ∈ Fin) → ((♯‘(0..^(𝑀 · 𝑁))) = (♯‘((0..^𝑀) × (0..^𝑁))) ↔ (0..^(𝑀 · 𝑁)) ≈ ((0..^𝑀) × (0..^𝑁))))
129	125, 127, 128	syl2anc 411	. . . . . . 7 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → ((♯‘(0..^(𝑀 · 𝑁))) = (♯‘((0..^𝑀) × (0..^𝑁))) ↔ (0..^(𝑀 · 𝑁)) ≈ ((0..^𝑀) × (0..^𝑁))))
130	122, 129	mpbid 147	. . . . . 6 ⊢ ((𝑀 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (0..^(𝑀 · 𝑁)) ≈ ((0..^𝑀) × (0..^𝑁)))
131	103, 104, 130	syl2an 289	. . . . 5 ⊢ ((𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (0..^(𝑀 · 𝑁)) ≈ ((0..^𝑀) × (0..^𝑁)))
132	6, 10, 131	syl2anc 411	. . . 4 ⊢ (𝜑 → (0..^(𝑀 · 𝑁)) ≈ ((0..^𝑀) × (0..^𝑁)))
133	132, 2, 16	3brtr4g 4122	. . 3 ⊢ (𝜑 → 𝑆 ≈ 𝑇)
134	6	nnnn0d 9454	. . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℕ₀)
135	10	nnnn0d 9454	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
136	134, 135, 127	syl2anc 411	. . . 4 ⊢ (𝜑 → ((0..^𝑀) × (0..^𝑁)) ∈ Fin)
137	16, 136	eqeltrid 2318	. . 3 ⊢ (𝜑 → 𝑇 ∈ Fin)
138		f1finf1o 7145	. . 3 ⊢ ((𝑆 ≈ 𝑇 ∧ 𝑇 ∈ Fin) → (𝐹:𝑆–1-1→𝑇 ↔ 𝐹:𝑆–1-1-onto→𝑇))
139	133, 137, 138	syl2anc 411	. 2 ⊢ (𝜑 → (𝐹:𝑆–1-1→𝑇 ↔ 𝐹:𝑆–1-1-onto→𝑇))
140	102, 139	mpbid 147	1 ⊢ (𝜑 → 𝐹:𝑆–1-1-onto→𝑇)

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∧ w3a 1004 = wceq 1397 ∈ wcel 2202 ∀wral 2510 Vcvv 2802 ⟨cop 3672 class class class wbr 4088 ↦ cmpt 4150 × cxp 4723 ⟶wf 5322 –1-1→wf1 5323 –1-1-onto→wf1o 5325 ‘cfv 5326 (class class class)co 6017 ≈ cen 6906 Fincfn 6908 0cc0 8031 1c1 8032 · cmul 8036 < clt 8213 ≤ cle 8214 − cmin 8349 ℕcn 9142 ℕ₀cn0 9401 ℤcz 9478 ℚcq 9852 ..^cfzo 10376 mod cmo 10583 ♯chash 11036 ∥ cdvds 12347 gcd cgcd 12523

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-nul 4215 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-iinf 4686 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-mulrcl 8130 ax-addcom 8131 ax-mulcom 8132 ax-addass 8133 ax-mulass 8134 ax-distr 8135 ax-i2m1 8136 ax-0lt1 8137 ax-1rid 8138 ax-0id 8139 ax-rnegex 8140 ax-precex 8141 ax-cnre 8142 ax-pre-ltirr 8143 ax-pre-ltwlin 8144 ax-pre-lttrn 8145 ax-pre-apti 8146 ax-pre-ltadd 8147 ax-pre-mulgt0 8148 ax-pre-mulext 8149 ax-arch 8150 ax-caucvg 8151

This theorem depends on definitions: df-bi 117 df-dc 842 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rmo 2518 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-if 3606 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-tr 4188 df-id 4390 df-po 4393 df-iso 4394 df-iord 4463 df-on 4465 df-ilim 4466 df-suc 4468 df-iom 4689 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-riota 5970 df-ov 6020 df-oprab 6021 df-mpo 6022 df-1st 6302 df-2nd 6303 df-recs 6470 df-irdg 6535 df-frec 6556 df-1o 6581 df-oadd 6585 df-er 6701 df-en 6909 df-dom 6910 df-fin 6911 df-sup 7182 df-pnf 8215 df-mnf 8216 df-xr 8217 df-ltxr 8218 df-le 8219 df-sub 8351 df-neg 8352 df-reap 8754 df-ap 8761 df-div 8852 df-inn 9143 df-2 9201 df-3 9202 df-4 9203 df-n0 9402 df-z 9479 df-uz 9755 df-q 9853 df-rp 9888 df-fz 10243 df-fzo 10377 df-fl 10529 df-mod 10584 df-seqfrec 10709 df-exp 10800 df-ihash 11037 df-cj 11402 df-re 11403 df-im 11404 df-rsqrt 11558 df-abs 11559 df-dvds 12348 df-gcd 12524

This theorem is referenced by: phimullem 12796

W3C validator