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Theorem prmind2 12313

Description: A variation on prmind 12314 assuming complete induction for primes. (Contributed by Mario Carneiro, 20-Jun-2015.)

**Hypotheses**
Ref	Expression
prmind.1	⊢ (𝑥 = 1 → (𝜑 ↔ 𝜓))
prmind.2	⊢ (𝑥 = 𝑦 → (𝜑 ↔ 𝜒))
prmind.3	⊢ (𝑥 = 𝑧 → (𝜑 ↔ 𝜃))
prmind.4	⊢ (𝑥 = (𝑦 · 𝑧) → (𝜑 ↔ 𝜏))
prmind.5	⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜂))
prmind.6	⊢ 𝜓
prmind2.7	⊢ ((𝑥 ∈ ℙ ∧ ∀𝑦 ∈ (1...(𝑥 − 1))𝜒) → 𝜑)
prmind2.8	⊢ ((𝑦 ∈ (ℤ_≥‘2) ∧ 𝑧 ∈ (ℤ_≥‘2)) → ((𝜒 ∧ 𝜃) → 𝜏))

**Assertion**
Ref	Expression
prmind2	⊢ (𝐴 ∈ ℕ → 𝜂)

Distinct variable groups: 𝑥,𝑦 𝑥,𝐴 𝑥,𝑧,𝜒 𝜂,𝑥 𝜏,𝑥 𝜃,𝑥 𝑦,𝑧,𝜑 Allowed substitution hints: 𝜑(𝑥) 𝜓(𝑥,𝑦,𝑧) 𝜒(𝑦) 𝜃(𝑦,𝑧) 𝜏(𝑦,𝑧) 𝜂(𝑦,𝑧) 𝐴(𝑦,𝑧)

Proof of Theorem prmind2 Dummy variables 𝑘 𝑛 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		prmind.5	. 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜂))
2		oveq2 5933	. . . 4 ⊢ (𝑛 = 1 → (1...𝑛) = (1...1))
3	2	raleqdv 2699	. . 3 ⊢ (𝑛 = 1 → (∀𝑥 ∈ (1...𝑛)𝜑 ↔ ∀𝑥 ∈ (1...1)𝜑))
4		oveq2 5933	. . . 4 ⊢ (𝑛 = 𝑘 → (1...𝑛) = (1...𝑘))
5	4	raleqdv 2699	. . 3 ⊢ (𝑛 = 𝑘 → (∀𝑥 ∈ (1...𝑛)𝜑 ↔ ∀𝑥 ∈ (1...𝑘)𝜑))
6		oveq2 5933	. . . 4 ⊢ (𝑛 = (𝑘 + 1) → (1...𝑛) = (1...(𝑘 + 1)))
7	6	raleqdv 2699	. . 3 ⊢ (𝑛 = (𝑘 + 1) → (∀𝑥 ∈ (1...𝑛)𝜑 ↔ ∀𝑥 ∈ (1...(𝑘 + 1))𝜑))
8		oveq2 5933	. . . 4 ⊢ (𝑛 = 𝐴 → (1...𝑛) = (1...𝐴))
9	8	raleqdv 2699	. . 3 ⊢ (𝑛 = 𝐴 → (∀𝑥 ∈ (1...𝑛)𝜑 ↔ ∀𝑥 ∈ (1...𝐴)𝜑))
10		prmind.6	. . . . 5 ⊢ 𝜓
11		elfz1eq 10127	. . . . . 6 ⊢ (𝑥 ∈ (1...1) → 𝑥 = 1)
12		prmind.1	. . . . . 6 ⊢ (𝑥 = 1 → (𝜑 ↔ 𝜓))
13	11, 12	syl 14	. . . . 5 ⊢ (𝑥 ∈ (1...1) → (𝜑 ↔ 𝜓))
14	10, 13	mpbiri 168	. . . 4 ⊢ (𝑥 ∈ (1...1) → 𝜑)
15	14	rgen 2550	. . 3 ⊢ ∀𝑥 ∈ (1...1)𝜑
16		peano2nn 9019	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → (𝑘 + 1) ∈ ℕ)
17	16	ad2antrr 488	. . . . . . . . . . . 12 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑘 + 1) ∈ ℕ)
18	17	nncnd 9021	. . . . . . . . . . 11 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑘 + 1) ∈ ℂ)
19		elfzuz 10113	. . . . . . . . . . . . . 14 ⊢ (𝑦 ∈ (2...((𝑘 + 1) − 1)) → 𝑦 ∈ (ℤ_≥‘2))
20	19	ad2antrl 490	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ∈ (ℤ_≥‘2))
21		eluz2nn 9657	. . . . . . . . . . . . 13 ⊢ (𝑦 ∈ (ℤ_≥‘2) → 𝑦 ∈ ℕ)
22	20, 21	syl 14	. . . . . . . . . . . 12 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ∈ ℕ)
23	22	nncnd 9021	. . . . . . . . . . 11 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ∈ ℂ)
24	22	nnap0d 9053	. . . . . . . . . . 11 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 # 0)
25	18, 23, 24	divcanap2d 8836	. . . . . . . . . 10 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑦 · ((𝑘 + 1) / 𝑦)) = (𝑘 + 1))
26		simprr 531	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ∥ (𝑘 + 1))
27	22	nnzd 9464	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ∈ ℤ)
28	22	nnne0d 9052	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ≠ 0)
29	17	nnzd 9464	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑘 + 1) ∈ ℤ)
30		dvdsval2 11972	. . . . . . . . . . . . . 14 ⊢ ((𝑦 ∈ ℤ ∧ 𝑦 ≠ 0 ∧ (𝑘 + 1) ∈ ℤ) → (𝑦 ∥ (𝑘 + 1) ↔ ((𝑘 + 1) / 𝑦) ∈ ℤ))
31	27, 28, 29, 30	syl3anc 1249	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑦 ∥ (𝑘 + 1) ↔ ((𝑘 + 1) / 𝑦) ∈ ℤ))
32	26, 31	mpbid 147	. . . . . . . . . . . 12 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / 𝑦) ∈ ℤ)
33	23	mulid2d 8062	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (1 · 𝑦) = 𝑦)
34		elfzle2 10120	. . . . . . . . . . . . . . . . 17 ⊢ (𝑦 ∈ (2...((𝑘 + 1) − 1)) → 𝑦 ≤ ((𝑘 + 1) − 1))
35	34	ad2antrl 490	. . . . . . . . . . . . . . . 16 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ≤ ((𝑘 + 1) − 1))
36		nncn 9015	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℂ)
37	36	ad2antrr 488	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑘 ∈ ℂ)
38		ax-1cn 7989	. . . . . . . . . . . . . . . . 17 ⊢ 1 ∈ ℂ
39		pncan 8249	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑘 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑘 + 1) − 1) = 𝑘)
40	37, 38, 39	sylancl 413	. . . . . . . . . . . . . . . 16 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) − 1) = 𝑘)
41	35, 40	breqtrd 4060	. . . . . . . . . . . . . . 15 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ≤ 𝑘)
42		nnz 9362	. . . . . . . . . . . . . . . . 17 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℤ)
43	42	ad2antrr 488	. . . . . . . . . . . . . . . 16 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑘 ∈ ℤ)
44		zleltp1 9398	. . . . . . . . . . . . . . . 16 ⊢ ((𝑦 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝑦 ≤ 𝑘 ↔ 𝑦 < (𝑘 + 1)))
45	27, 43, 44	syl2anc 411	. . . . . . . . . . . . . . 15 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑦 ≤ 𝑘 ↔ 𝑦 < (𝑘 + 1)))
46	41, 45	mpbid 147	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 < (𝑘 + 1))
47	33, 46	eqbrtrd 4056	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (1 · 𝑦) < (𝑘 + 1))
48		1red 8058	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 1 ∈ ℝ)
49	17	nnred 9020	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑘 + 1) ∈ ℝ)
50	22	nnred 9020	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ∈ ℝ)
51	22	nngt0d 9051	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 0 < 𝑦)
52		ltmuldiv 8918	. . . . . . . . . . . . . 14 ⊢ ((1 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ ∧ (𝑦 ∈ ℝ ∧ 0 < 𝑦)) → ((1 · 𝑦) < (𝑘 + 1) ↔ 1 < ((𝑘 + 1) / 𝑦)))
53	48, 49, 50, 51, 52	syl112anc 1253	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((1 · 𝑦) < (𝑘 + 1) ↔ 1 < ((𝑘 + 1) / 𝑦)))
54	47, 53	mpbid 147	. . . . . . . . . . . 12 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 1 < ((𝑘 + 1) / 𝑦))
55		eluz2b1 9692	. . . . . . . . . . . 12 ⊢ (((𝑘 + 1) / 𝑦) ∈ (ℤ_≥‘2) ↔ (((𝑘 + 1) / 𝑦) ∈ ℤ ∧ 1 < ((𝑘 + 1) / 𝑦)))
56	32, 54, 55	sylanbrc 417	. . . . . . . . . . 11 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / 𝑦) ∈ (ℤ_≥‘2))
57		prmind.2	. . . . . . . . . . . . 13 ⊢ (𝑥 = 𝑦 → (𝜑 ↔ 𝜒))
58		simplr 528	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ∀𝑥 ∈ (1...𝑘)𝜑)
59		fznn 10181	. . . . . . . . . . . . . . 15 ⊢ (𝑘 ∈ ℤ → (𝑦 ∈ (1...𝑘) ↔ (𝑦 ∈ ℕ ∧ 𝑦 ≤ 𝑘)))
60	43, 59	syl 14	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑦 ∈ (1...𝑘) ↔ (𝑦 ∈ ℕ ∧ 𝑦 ≤ 𝑘)))
61	22, 41, 60	mpbir2and 946	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ∈ (1...𝑘))
62	57, 58, 61	rspcdva 2873	. . . . . . . . . . . 12 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝜒)
63		vex 2766	. . . . . . . . . . . . . . 15 ⊢ 𝑧 ∈ V
64		prmind.3	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = 𝑧 → (𝜑 ↔ 𝜃))
65	63, 64	sbcie 3024	. . . . . . . . . . . . . 14 ⊢ ([𝑧 / 𝑥]𝜑 ↔ 𝜃)
66		dfsbcq 2991	. . . . . . . . . . . . . 14 ⊢ (𝑧 = ((𝑘 + 1) / 𝑦) → ([𝑧 / 𝑥]𝜑 ↔ [((𝑘 + 1) / 𝑦) / 𝑥]𝜑))
67	65, 66	bitr3id 194	. . . . . . . . . . . . 13 ⊢ (𝑧 = ((𝑘 + 1) / 𝑦) → (𝜃 ↔ [((𝑘 + 1) / 𝑦) / 𝑥]𝜑))
68	64	cbvralv 2729	. . . . . . . . . . . . . 14 ⊢ (∀𝑥 ∈ (1...𝑘)𝜑 ↔ ∀𝑧 ∈ (1...𝑘)𝜃)
69	58, 68	sylib 122	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ∀𝑧 ∈ (1...𝑘)𝜃)
70	17	nnrpd 9786	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑘 + 1) ∈ ℝ⁺)
71	22	nnrpd 9786	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 𝑦 ∈ ℝ⁺)
72	70, 71	rpdivcld 9806	. . . . . . . . . . . . . . . 16 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / 𝑦) ∈ ℝ⁺)
73	72	rpgt0d 9791	. . . . . . . . . . . . . . 15 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 0 < ((𝑘 + 1) / 𝑦))
74		elnnz 9353	. . . . . . . . . . . . . . 15 ⊢ (((𝑘 + 1) / 𝑦) ∈ ℕ ↔ (((𝑘 + 1) / 𝑦) ∈ ℤ ∧ 0 < ((𝑘 + 1) / 𝑦)))
75	32, 73, 74	sylanbrc 417	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / 𝑦) ∈ ℕ)
76	17	nnap0d 9053	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝑘 + 1) # 0)
77	18, 76	dividapd 8830	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / (𝑘 + 1)) = 1)
78		eluz2gt1 9693	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑦 ∈ (ℤ_≥‘2) → 1 < 𝑦)
79	20, 78	syl 14	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 1 < 𝑦)
80	77, 79	eqbrtrd 4056	. . . . . . . . . . . . . . . 16 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / (𝑘 + 1)) < 𝑦)
81	17	nngt0d 9051	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → 0 < (𝑘 + 1))
82		ltdiv23 8936	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑘 + 1) ∈ ℝ ∧ ((𝑘 + 1) ∈ ℝ ∧ 0 < (𝑘 + 1)) ∧ (𝑦 ∈ ℝ ∧ 0 < 𝑦)) → (((𝑘 + 1) / (𝑘 + 1)) < 𝑦 ↔ ((𝑘 + 1) / 𝑦) < (𝑘 + 1)))
83	49, 49, 81, 50, 51, 82	syl122anc 1258	. . . . . . . . . . . . . . . 16 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (((𝑘 + 1) / (𝑘 + 1)) < 𝑦 ↔ ((𝑘 + 1) / 𝑦) < (𝑘 + 1)))
84	80, 83	mpbid 147	. . . . . . . . . . . . . . 15 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / 𝑦) < (𝑘 + 1))
85		zleltp1 9398	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑘 + 1) / 𝑦) ∈ ℤ ∧ 𝑘 ∈ ℤ) → (((𝑘 + 1) / 𝑦) ≤ 𝑘 ↔ ((𝑘 + 1) / 𝑦) < (𝑘 + 1)))
86	32, 43, 85	syl2anc 411	. . . . . . . . . . . . . . 15 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (((𝑘 + 1) / 𝑦) ≤ 𝑘 ↔ ((𝑘 + 1) / 𝑦) < (𝑘 + 1)))
87	84, 86	mpbird 167	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / 𝑦) ≤ 𝑘)
88		fznn 10181	. . . . . . . . . . . . . . 15 ⊢ (𝑘 ∈ ℤ → (((𝑘 + 1) / 𝑦) ∈ (1...𝑘) ↔ (((𝑘 + 1) / 𝑦) ∈ ℕ ∧ ((𝑘 + 1) / 𝑦) ≤ 𝑘)))
89	43, 88	syl 14	. . . . . . . . . . . . . 14 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (((𝑘 + 1) / 𝑦) ∈ (1...𝑘) ↔ (((𝑘 + 1) / 𝑦) ∈ ℕ ∧ ((𝑘 + 1) / 𝑦) ≤ 𝑘)))
90	75, 87, 89	mpbir2and 946	. . . . . . . . . . . . 13 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → ((𝑘 + 1) / 𝑦) ∈ (1...𝑘))
91	67, 69, 90	rspcdva 2873	. . . . . . . . . . . 12 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → [((𝑘 + 1) / 𝑦) / 𝑥]𝜑)
92	62, 91	jca 306	. . . . . . . . . . 11 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → (𝜒 ∧ [((𝑘 + 1) / 𝑦) / 𝑥]𝜑))
93	67	anbi2d 464	. . . . . . . . . . . . . 14 ⊢ (𝑧 = ((𝑘 + 1) / 𝑦) → ((𝜒 ∧ 𝜃) ↔ (𝜒 ∧ [((𝑘 + 1) / 𝑦) / 𝑥]𝜑)))
94		oveq2 5933	. . . . . . . . . . . . . . 15 ⊢ (𝑧 = ((𝑘 + 1) / 𝑦) → (𝑦 · 𝑧) = (𝑦 · ((𝑘 + 1) / 𝑦)))
95	94	sbceq1d 2994	. . . . . . . . . . . . . 14 ⊢ (𝑧 = ((𝑘 + 1) / 𝑦) → ([(𝑦 · 𝑧) / 𝑥]𝜑 ↔ [(𝑦 · ((𝑘 + 1) / 𝑦)) / 𝑥]𝜑))
96	93, 95	imbi12d 234	. . . . . . . . . . . . 13 ⊢ (𝑧 = ((𝑘 + 1) / 𝑦) → (((𝜒 ∧ 𝜃) → [(𝑦 · 𝑧) / 𝑥]𝜑) ↔ ((𝜒 ∧ [((𝑘 + 1) / 𝑦) / 𝑥]𝜑) → [(𝑦 · ((𝑘 + 1) / 𝑦)) / 𝑥]𝜑)))
97	96	imbi2d 230	. . . . . . . . . . . 12 ⊢ (𝑧 = ((𝑘 + 1) / 𝑦) → ((𝑦 ∈ (ℤ_≥‘2) → ((𝜒 ∧ 𝜃) → [(𝑦 · 𝑧) / 𝑥]𝜑)) ↔ (𝑦 ∈ (ℤ_≥‘2) → ((𝜒 ∧ [((𝑘 + 1) / 𝑦) / 𝑥]𝜑) → [(𝑦 · ((𝑘 + 1) / 𝑦)) / 𝑥]𝜑))))
98		prmind2.8	. . . . . . . . . . . . . . 15 ⊢ ((𝑦 ∈ (ℤ_≥‘2) ∧ 𝑧 ∈ (ℤ_≥‘2)) → ((𝜒 ∧ 𝜃) → 𝜏))
99	98	ancoms 268	. . . . . . . . . . . . . 14 ⊢ ((𝑧 ∈ (ℤ_≥‘2) ∧ 𝑦 ∈ (ℤ_≥‘2)) → ((𝜒 ∧ 𝜃) → 𝜏))
100		eluzelz 9627	. . . . . . . . . . . . . . . . 17 ⊢ (𝑦 ∈ (ℤ_≥‘2) → 𝑦 ∈ ℤ)
101	100	adantl 277	. . . . . . . . . . . . . . . 16 ⊢ ((𝑧 ∈ (ℤ_≥‘2) ∧ 𝑦 ∈ (ℤ_≥‘2)) → 𝑦 ∈ ℤ)
102		eluzelz 9627	. . . . . . . . . . . . . . . . 17 ⊢ (𝑧 ∈ (ℤ_≥‘2) → 𝑧 ∈ ℤ)
103	102	adantr 276	. . . . . . . . . . . . . . . 16 ⊢ ((𝑧 ∈ (ℤ_≥‘2) ∧ 𝑦 ∈ (ℤ_≥‘2)) → 𝑧 ∈ ℤ)
104	101, 103	zmulcld 9471	. . . . . . . . . . . . . . 15 ⊢ ((𝑧 ∈ (ℤ_≥‘2) ∧ 𝑦 ∈ (ℤ_≥‘2)) → (𝑦 · 𝑧) ∈ ℤ)
105		prmind.4	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = (𝑦 · 𝑧) → (𝜑 ↔ 𝜏))
106	105	sbcieg 3022	. . . . . . . . . . . . . . 15 ⊢ ((𝑦 · 𝑧) ∈ ℤ → ([(𝑦 · 𝑧) / 𝑥]𝜑 ↔ 𝜏))
107	104, 106	syl 14	. . . . . . . . . . . . . 14 ⊢ ((𝑧 ∈ (ℤ_≥‘2) ∧ 𝑦 ∈ (ℤ_≥‘2)) → ([(𝑦 · 𝑧) / 𝑥]𝜑 ↔ 𝜏))
108	99, 107	sylibrd 169	. . . . . . . . . . . . 13 ⊢ ((𝑧 ∈ (ℤ_≥‘2) ∧ 𝑦 ∈ (ℤ_≥‘2)) → ((𝜒 ∧ 𝜃) → [(𝑦 · 𝑧) / 𝑥]𝜑))
109	108	ex 115	. . . . . . . . . . . 12 ⊢ (𝑧 ∈ (ℤ_≥‘2) → (𝑦 ∈ (ℤ_≥‘2) → ((𝜒 ∧ 𝜃) → [(𝑦 · 𝑧) / 𝑥]𝜑)))
110	97, 109	vtoclga 2830	. . . . . . . . . . 11 ⊢ (((𝑘 + 1) / 𝑦) ∈ (ℤ_≥‘2) → (𝑦 ∈ (ℤ_≥‘2) → ((𝜒 ∧ [((𝑘 + 1) / 𝑦) / 𝑥]𝜑) → [(𝑦 · ((𝑘 + 1) / 𝑦)) / 𝑥]𝜑)))
111	56, 20, 92, 110	syl3c 63	. . . . . . . . . 10 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → [(𝑦 · ((𝑘 + 1) / 𝑦)) / 𝑥]𝜑)
112	25, 111	sbceq1dd 2995	. . . . . . . . 9 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ (𝑦 ∈ (2...((𝑘 + 1) − 1)) ∧ 𝑦 ∥ (𝑘 + 1))) → [(𝑘 + 1) / 𝑥]𝜑)
113	112	rexlimdvaa 2615	. . . . . . . 8 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1) → [(𝑘 + 1) / 𝑥]𝜑))
114		ralnex 2485	. . . . . . . . 9 ⊢ (∀𝑦 ∈ (2...((𝑘 + 1) − 1)) ¬ 𝑦 ∥ (𝑘 + 1) ↔ ¬ ∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1))
115		simpl 109	. . . . . . . . . . . . . 14 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → 𝑘 ∈ ℕ)
116		elnnuz 9655	. . . . . . . . . . . . . 14 ⊢ (𝑘 ∈ ℕ ↔ 𝑘 ∈ (ℤ_≥‘1))
117	115, 116	sylib 122	. . . . . . . . . . . . 13 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → 𝑘 ∈ (ℤ_≥‘1))
118		eluzp1p1 9644	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ (ℤ_≥‘1) → (𝑘 + 1) ∈ (ℤ_≥‘(1 + 1)))
119	117, 118	syl 14	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (𝑘 + 1) ∈ (ℤ_≥‘(1 + 1)))
120		df-2 9066	. . . . . . . . . . . . 13 ⊢ 2 = (1 + 1)
121	120	fveq2i 5564	. . . . . . . . . . . 12 ⊢ (ℤ_≥‘2) = (ℤ_≥‘(1 + 1))
122	119, 121	eleqtrrdi 2290	. . . . . . . . . . 11 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (𝑘 + 1) ∈ (ℤ_≥‘2))
123		isprm3 12311	. . . . . . . . . . . 12 ⊢ ((𝑘 + 1) ∈ ℙ ↔ ((𝑘 + 1) ∈ (ℤ_≥‘2) ∧ ∀𝑦 ∈ (2...((𝑘 + 1) − 1)) ¬ 𝑦 ∥ (𝑘 + 1)))
124	123	baibr 921	. . . . . . . . . . 11 ⊢ ((𝑘 + 1) ∈ (ℤ_≥‘2) → (∀𝑦 ∈ (2...((𝑘 + 1) − 1)) ¬ 𝑦 ∥ (𝑘 + 1) ↔ (𝑘 + 1) ∈ ℙ))
125	122, 124	syl 14	. . . . . . . . . 10 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (∀𝑦 ∈ (2...((𝑘 + 1) − 1)) ¬ 𝑦 ∥ (𝑘 + 1) ↔ (𝑘 + 1) ∈ ℙ))
126		simpr 110	. . . . . . . . . . . . 13 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → ∀𝑥 ∈ (1...𝑘)𝜑)
127	57	cbvralv 2729	. . . . . . . . . . . . 13 ⊢ (∀𝑥 ∈ (1...𝑘)𝜑 ↔ ∀𝑦 ∈ (1...𝑘)𝜒)
128	126, 127	sylib 122	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → ∀𝑦 ∈ (1...𝑘)𝜒)
129	115	nncnd 9021	. . . . . . . . . . . . . . 15 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → 𝑘 ∈ ℂ)
130	129, 38, 39	sylancl 413	. . . . . . . . . . . . . 14 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → ((𝑘 + 1) − 1) = 𝑘)
131	130	oveq2d 5941	. . . . . . . . . . . . 13 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (1...((𝑘 + 1) − 1)) = (1...𝑘))
132	131	raleqdv 2699	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (∀𝑦 ∈ (1...((𝑘 + 1) − 1))𝜒 ↔ ∀𝑦 ∈ (1...𝑘)𝜒))
133	128, 132	mpbird 167	. . . . . . . . . . 11 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → ∀𝑦 ∈ (1...((𝑘 + 1) − 1))𝜒)
134		nfcv 2339	. . . . . . . . . . . 12 ⊢ Ⅎ𝑥(𝑘 + 1)
135		nfv 1542	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑥∀𝑦 ∈ (1...((𝑘 + 1) − 1))𝜒
136		nfsbc1v 3008	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑥[(𝑘 + 1) / 𝑥]𝜑
137	135, 136	nfim 1586	. . . . . . . . . . . 12 ⊢ Ⅎ𝑥(∀𝑦 ∈ (1...((𝑘 + 1) − 1))𝜒 → [(𝑘 + 1) / 𝑥]𝜑)
138		oveq1 5932	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = (𝑘 + 1) → (𝑥 − 1) = ((𝑘 + 1) − 1))
139	138	oveq2d 5941	. . . . . . . . . . . . . 14 ⊢ (𝑥 = (𝑘 + 1) → (1...(𝑥 − 1)) = (1...((𝑘 + 1) − 1)))
140	139	raleqdv 2699	. . . . . . . . . . . . 13 ⊢ (𝑥 = (𝑘 + 1) → (∀𝑦 ∈ (1...(𝑥 − 1))𝜒 ↔ ∀𝑦 ∈ (1...((𝑘 + 1) − 1))𝜒))
141		sbceq1a 2999	. . . . . . . . . . . . 13 ⊢ (𝑥 = (𝑘 + 1) → (𝜑 ↔ [(𝑘 + 1) / 𝑥]𝜑))
142	140, 141	imbi12d 234	. . . . . . . . . . . 12 ⊢ (𝑥 = (𝑘 + 1) → ((∀𝑦 ∈ (1...(𝑥 − 1))𝜒 → 𝜑) ↔ (∀𝑦 ∈ (1...((𝑘 + 1) − 1))𝜒 → [(𝑘 + 1) / 𝑥]𝜑)))
143		prmind2.7	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℙ ∧ ∀𝑦 ∈ (1...(𝑥 − 1))𝜒) → 𝜑)
144	143	ex 115	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℙ → (∀𝑦 ∈ (1...(𝑥 − 1))𝜒 → 𝜑))
145	134, 137, 142, 144	vtoclgaf 2829	. . . . . . . . . . 11 ⊢ ((𝑘 + 1) ∈ ℙ → (∀𝑦 ∈ (1...((𝑘 + 1) − 1))𝜒 → [(𝑘 + 1) / 𝑥]𝜑))
146	133, 145	syl5com 29	. . . . . . . . . 10 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → ((𝑘 + 1) ∈ ℙ → [(𝑘 + 1) / 𝑥]𝜑))
147	125, 146	sylbid 150	. . . . . . . . 9 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (∀𝑦 ∈ (2...((𝑘 + 1) − 1)) ¬ 𝑦 ∥ (𝑘 + 1) → [(𝑘 + 1) / 𝑥]𝜑))
148	114, 147	biimtrrid 153	. . . . . . . 8 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (¬ ∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1) → [(𝑘 + 1) / 𝑥]𝜑))
149		2z 9371	. . . . . . . . . . 11 ⊢ 2 ∈ ℤ
150	149	a1i 9	. . . . . . . . . 10 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → 2 ∈ ℤ)
151	115	nnzd 9464	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → 𝑘 ∈ ℤ)
152	151	peano2zd 9468	. . . . . . . . . . 11 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (𝑘 + 1) ∈ ℤ)
153		1zzd 9370	. . . . . . . . . . 11 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → 1 ∈ ℤ)
154	152, 153	zsubcld 9470	. . . . . . . . . 10 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → ((𝑘 + 1) − 1) ∈ ℤ)
155	19, 21	syl 14	. . . . . . . . . . 11 ⊢ (𝑦 ∈ (2...((𝑘 + 1) − 1)) → 𝑦 ∈ ℕ)
156		dvdsdc 11980	. . . . . . . . . . 11 ⊢ ((𝑦 ∈ ℕ ∧ (𝑘 + 1) ∈ ℤ) → DECID 𝑦 ∥ (𝑘 + 1))
157	155, 152, 156	syl2anr 290	. . . . . . . . . 10 ⊢ (((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) ∧ 𝑦 ∈ (2...((𝑘 + 1) − 1))) → DECID 𝑦 ∥ (𝑘 + 1))
158	150, 154, 157	exfzdc 10333	. . . . . . . . 9 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → DECID ∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1))
159		exmiddc 837	. . . . . . . . 9 ⊢ (DECID ∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1) → (∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1) ∨ ¬ ∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1)))
160	158, 159	syl 14	. . . . . . . 8 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → (∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1) ∨ ¬ ∃𝑦 ∈ (2...((𝑘 + 1) − 1))𝑦 ∥ (𝑘 + 1)))
161	113, 148, 160	mpjaod 719	. . . . . . 7 ⊢ ((𝑘 ∈ ℕ ∧ ∀𝑥 ∈ (1...𝑘)𝜑) → [(𝑘 + 1) / 𝑥]𝜑)
162	161	ex 115	. . . . . 6 ⊢ (𝑘 ∈ ℕ → (∀𝑥 ∈ (1...𝑘)𝜑 → [(𝑘 + 1) / 𝑥]𝜑))
163		ralsnsg 3660	. . . . . . 7 ⊢ ((𝑘 + 1) ∈ ℕ → (∀𝑥 ∈ {(𝑘 + 1)}𝜑 ↔ [(𝑘 + 1) / 𝑥]𝜑))
164	16, 163	syl 14	. . . . . 6 ⊢ (𝑘 ∈ ℕ → (∀𝑥 ∈ {(𝑘 + 1)}𝜑 ↔ [(𝑘 + 1) / 𝑥]𝜑))
165	162, 164	sylibrd 169	. . . . 5 ⊢ (𝑘 ∈ ℕ → (∀𝑥 ∈ (1...𝑘)𝜑 → ∀𝑥 ∈ {(𝑘 + 1)}𝜑))
166	165	ancld 325	. . . 4 ⊢ (𝑘 ∈ ℕ → (∀𝑥 ∈ (1...𝑘)𝜑 → (∀𝑥 ∈ (1...𝑘)𝜑 ∧ ∀𝑥 ∈ {(𝑘 + 1)}𝜑)))
167		fzsuc 10161	. . . . . . 7 ⊢ (𝑘 ∈ (ℤ_≥‘1) → (1...(𝑘 + 1)) = ((1...𝑘) ∪ {(𝑘 + 1)}))
168	116, 167	sylbi 121	. . . . . 6 ⊢ (𝑘 ∈ ℕ → (1...(𝑘 + 1)) = ((1...𝑘) ∪ {(𝑘 + 1)}))
169	168	raleqdv 2699	. . . . 5 ⊢ (𝑘 ∈ ℕ → (∀𝑥 ∈ (1...(𝑘 + 1))𝜑 ↔ ∀𝑥 ∈ ((1...𝑘) ∪ {(𝑘 + 1)})𝜑))
170		ralunb 3345	. . . . 5 ⊢ (∀𝑥 ∈ ((1...𝑘) ∪ {(𝑘 + 1)})𝜑 ↔ (∀𝑥 ∈ (1...𝑘)𝜑 ∧ ∀𝑥 ∈ {(𝑘 + 1)}𝜑))
171	169, 170	bitrdi 196	. . . 4 ⊢ (𝑘 ∈ ℕ → (∀𝑥 ∈ (1...(𝑘 + 1))𝜑 ↔ (∀𝑥 ∈ (1...𝑘)𝜑 ∧ ∀𝑥 ∈ {(𝑘 + 1)}𝜑)))
172	166, 171	sylibrd 169	. . 3 ⊢ (𝑘 ∈ ℕ → (∀𝑥 ∈ (1...𝑘)𝜑 → ∀𝑥 ∈ (1...(𝑘 + 1))𝜑))
173	3, 5, 7, 9, 15, 172	nnind 9023	. 2 ⊢ (𝐴 ∈ ℕ → ∀𝑥 ∈ (1...𝐴)𝜑)
174		elfz1end 10147	. . 3 ⊢ (𝐴 ∈ ℕ ↔ 𝐴 ∈ (1...𝐴))
175	174	biimpi 120	. 2 ⊢ (𝐴 ∈ ℕ → 𝐴 ∈ (1...𝐴))
176	1, 173, 175	rspcdva 2873	1 ⊢ (𝐴 ∈ ℕ → 𝜂)

Colors of variables: wff set class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 ∨ wo 709 DECID wdc 835 = wceq 1364 ∈ wcel 2167 ≠ wne 2367 ∀wral 2475 ∃wrex 2476 [wsbc 2989 ∪ cun 3155 {csn 3623 class class class wbr 4034 ‘cfv 5259 (class class class)co 5925 ℂcc 7894 ℝcr 7895 0cc0 7896 1c1 7897 + caddc 7899 · cmul 7901 < clt 8078 ≤ cle 8079 − cmin 8214 / cdiv 8716 ℕcn 9007 2c2 9058 ℤcz 9343 ℤ_≥cuz 9618 ...cfz 10100 ∥ cdvds 11969 ℙcprime 12300

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 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4149 ax-sep 4152 ax-nul 4160 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-setind 4574 ax-iinf 4625 ax-cnex 7987 ax-resscn 7988 ax-1cn 7989 ax-1re 7990 ax-icn 7991 ax-addcl 7992 ax-addrcl 7993 ax-mulcl 7994 ax-mulrcl 7995 ax-addcom 7996 ax-mulcom 7997 ax-addass 7998 ax-mulass 7999 ax-distr 8000 ax-i2m1 8001 ax-0lt1 8002 ax-1rid 8003 ax-0id 8004 ax-rnegex 8005 ax-precex 8006 ax-cnre 8007 ax-pre-ltirr 8008 ax-pre-ltwlin 8009 ax-pre-lttrn 8010 ax-pre-apti 8011 ax-pre-ltadd 8012 ax-pre-mulgt0 8013 ax-pre-mulext 8014 ax-arch 8015 ax-caucvg 8016

This theorem depends on definitions: df-bi 117 df-stab 832 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-reu 2482 df-rmo 2483 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3452 df-if 3563 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-int 3876 df-iun 3919 df-br 4035 df-opab 4096 df-mpt 4097 df-tr 4133 df-id 4329 df-po 4332 df-iso 4333 df-iord 4402 df-on 4404 df-ilim 4405 df-suc 4407 df-iom 4628 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-rn 4675 df-res 4676 df-ima 4677 df-iota 5220 df-fun 5261 df-fn 5262 df-f 5263 df-f1 5264 df-fo 5265 df-f1o 5266 df-fv 5267 df-riota 5880 df-ov 5928 df-oprab 5929 df-mpo 5930 df-1st 6207 df-2nd 6208 df-recs 6372 df-frec 6458 df-1o 6483 df-2o 6484 df-er 6601 df-en 6809 df-pnf 8080 df-mnf 8081 df-xr 8082 df-ltxr 8083 df-le 8084 df-sub 8216 df-neg 8217 df-reap 8619 df-ap 8626 df-div 8717 df-inn 9008 df-2 9066 df-3 9067 df-4 9068 df-n0 9267 df-z 9344 df-uz 9619 df-q 9711 df-rp 9746 df-fz 10101 df-fzo 10235 df-fl 10377 df-mod 10432 df-seqfrec 10557 df-exp 10648 df-cj 11024 df-re 11025 df-im 11026 df-rsqrt 11180 df-abs 11181 df-dvds 11970 df-prm 12301

This theorem is referenced by: prmind 12314 4sqlem19 12603

W3C validator