Theorem prmgapprmo 16392

Description: Alternate proof of prmgap 16389: in contrast to prmgap 16389, where the gap starts at n! , the factorial of n, the gap starts at n#, the primorial of n. (Contributed by AV, 15-Aug-2020.) (Revised by AV, 29-Aug-2020.) (Proof modification is discouraged.) (New usage is discouraged.)

Assertion

Ref	Expression
prmgapprmo	⊢ ∀𝑛 ∈ ℕ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ (𝑛 ≤ (𝑞 − 𝑝) ∧ ∀𝑧 ∈ ((𝑝 + 1)..^𝑞)𝑧 ∉ ℙ)

Distinct variable group:   𝑛,𝑝,𝑞,𝑧

Proof of Theorem prmgapprmo

Dummy variables 𝑖 𝑗 𝑘 𝑚 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		id 22	. . 3 ⊢ (𝑛 ∈ ℕ → 𝑛 ∈ ℕ)
2		eqid 2821	. . . . . 6 ⊢ (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘)) = (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘))
3		fzfid 13335	. . . . . . 7 ⊢ (𝑗 ∈ ℕ → (1...𝑗) ∈ Fin)
4		eqidd 2822	. . . . . . . . 9 ⊢ ((𝑗 ∈ ℕ ∧ 𝑘 ∈ (1...𝑗)) → (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)) = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)))
5		eleq1 2900	. . . . . . . . . . 11 ⊢ (𝑚 = 𝑘 → (𝑚 ∈ ℙ ↔ 𝑘 ∈ ℙ))
6		id 22	. . . . . . . . . . 11 ⊢ (𝑚 = 𝑘 → 𝑚 = 𝑘)
7	5, 6	ifbieq1d 4490	. . . . . . . . . 10 ⊢ (𝑚 = 𝑘 → if(𝑚 ∈ ℙ, 𝑚, 1) = if(𝑘 ∈ ℙ, 𝑘, 1))
8	7	adantl 484	. . . . . . . . 9 ⊢ (((𝑗 ∈ ℕ ∧ 𝑘 ∈ (1...𝑗)) ∧ 𝑚 = 𝑘) → if(𝑚 ∈ ℙ, 𝑚, 1) = if(𝑘 ∈ ℙ, 𝑘, 1))
9		elfznn 12930	. . . . . . . . . 10 ⊢ (𝑘 ∈ (1...𝑗) → 𝑘 ∈ ℕ)
10	9	adantl 484	. . . . . . . . 9 ⊢ ((𝑗 ∈ ℕ ∧ 𝑘 ∈ (1...𝑗)) → 𝑘 ∈ ℕ)
11		1nn 11643	. . . . . . . . . . . 12 ⊢ 1 ∈ ℕ
12	11	a1i 11	. . . . . . . . . . 11 ⊢ (𝑘 ∈ (1...𝑗) → 1 ∈ ℕ)
13	9, 12	ifcld 4512	. . . . . . . . . 10 ⊢ (𝑘 ∈ (1...𝑗) → if(𝑘 ∈ ℙ, 𝑘, 1) ∈ ℕ)
14	13	adantl 484	. . . . . . . . 9 ⊢ ((𝑗 ∈ ℕ ∧ 𝑘 ∈ (1...𝑗)) → if(𝑘 ∈ ℙ, 𝑘, 1) ∈ ℕ)
15	4, 8, 10, 14	fvmptd 6770	. . . . . . . 8 ⊢ ((𝑗 ∈ ℕ ∧ 𝑘 ∈ (1...𝑗)) → ((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘) = if(𝑘 ∈ ℙ, 𝑘, 1))
16	15, 14	eqeltrd 2913	. . . . . . 7 ⊢ ((𝑗 ∈ ℕ ∧ 𝑘 ∈ (1...𝑗)) → ((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘) ∈ ℕ)
17	3, 16	fprodnncl 15303	. . . . . 6 ⊢ (𝑗 ∈ ℕ → ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘) ∈ ℕ)
18	2, 17	fmpti 6871	. . . . 5 ⊢ (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘)):ℕ⟶ℕ
19		nnex 11638	. . . . . 6 ⊢ ℕ ∈ V
20	19, 19	elmap 8429	. . . . 5 ⊢ ((𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘)) ∈ (ℕ ↑m ℕ) ↔ (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘)):ℕ⟶ℕ)
21	18, 20	mpbir 233	. . . 4 ⊢ (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘)) ∈ (ℕ ↑m ℕ)
22	21	a1i 11	. . 3 ⊢ (𝑛 ∈ ℕ → (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘)) ∈ (ℕ ↑m ℕ))
23		prmgapprmolem 16391	. . . . 5 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → 1 < (((#p‘𝑛) + 𝑖) gcd 𝑖))
24		eqidd 2822	. . . . . . . . . . . 12 ⊢ ((((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑗)) → (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)) = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)))
25	7	adantl 484	. . . . . . . . . . . 12 ⊢ (((((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑗)) ∧ 𝑚 = 𝑘) → if(𝑚 ∈ ℙ, 𝑚, 1) = if(𝑘 ∈ ℙ, 𝑘, 1))
26	9	adantl 484	. . . . . . . . . . . 12 ⊢ ((((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑗)) → 𝑘 ∈ ℕ)
27		elfzelz 12902	. . . . . . . . . . . . . 14 ⊢ (𝑘 ∈ (1...𝑗) → 𝑘 ∈ ℤ)
28		1zzd 12007	. . . . . . . . . . . . . 14 ⊢ (𝑘 ∈ (1...𝑗) → 1 ∈ ℤ)
29	27, 28	ifcld 4512	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ (1...𝑗) → if(𝑘 ∈ ℙ, 𝑘, 1) ∈ ℤ)
30	29	adantl 484	. . . . . . . . . . . 12 ⊢ ((((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑗)) → if(𝑘 ∈ ℙ, 𝑘, 1) ∈ ℤ)
31	24, 25, 26, 30	fvmptd 6770	. . . . . . . . . . 11 ⊢ ((((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑗)) → ((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘) = if(𝑘 ∈ ℙ, 𝑘, 1))
32	31	prodeq2dv 15271	. . . . . . . . . 10 ⊢ (((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) ∧ 𝑗 ∈ ℕ) → ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘) = ∏𝑘 ∈ (1...𝑗)if(𝑘 ∈ ℙ, 𝑘, 1))
33	32	mpteq2dva 5154	. . . . . . . . 9 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘)) = (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)if(𝑘 ∈ ℙ, 𝑘, 1)))
34		oveq2 7158	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑛 → (1...𝑗) = (1...𝑛))
35	34	prodeq1d 15269	. . . . . . . . . 10 ⊢ (𝑗 = 𝑛 → ∏𝑘 ∈ (1...𝑗)if(𝑘 ∈ ℙ, 𝑘, 1) = ∏𝑘 ∈ (1...𝑛)if(𝑘 ∈ ℙ, 𝑘, 1))
36	35	adantl 484	. . . . . . . . 9 ⊢ (((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) ∧ 𝑗 = 𝑛) → ∏𝑘 ∈ (1...𝑗)if(𝑘 ∈ ℙ, 𝑘, 1) = ∏𝑘 ∈ (1...𝑛)if(𝑘 ∈ ℙ, 𝑘, 1))
37		simpl 485	. . . . . . . . 9 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → 𝑛 ∈ ℕ)
38		fzfid 13335	. . . . . . . . . 10 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → (1...𝑛) ∈ Fin)
39		elfznn 12930	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ (1...𝑛) → 𝑘 ∈ ℕ)
40	11	a1i 11	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ (1...𝑛) → 1 ∈ ℕ)
41	39, 40	ifcld 4512	. . . . . . . . . . 11 ⊢ (𝑘 ∈ (1...𝑛) → if(𝑘 ∈ ℙ, 𝑘, 1) ∈ ℕ)
42	41	adantl 484	. . . . . . . . . 10 ⊢ (((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) ∧ 𝑘 ∈ (1...𝑛)) → if(𝑘 ∈ ℙ, 𝑘, 1) ∈ ℕ)
43	38, 42	fprodnncl 15303	. . . . . . . . 9 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → ∏𝑘 ∈ (1...𝑛)if(𝑘 ∈ ℙ, 𝑘, 1) ∈ ℕ)
44	33, 36, 37, 43	fvmptd 6770	. . . . . . . 8 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → ((𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘))‘𝑛) = ∏𝑘 ∈ (1...𝑛)if(𝑘 ∈ ℙ, 𝑘, 1))
45		nnnn0 11898	. . . . . . . . . . 11 ⊢ (𝑛 ∈ ℕ → 𝑛 ∈ ℕ0)
46		prmoval 16363	. . . . . . . . . . 11 ⊢ (𝑛 ∈ ℕ0 → (#p‘𝑛) = ∏𝑘 ∈ (1...𝑛)if(𝑘 ∈ ℙ, 𝑘, 1))
47	45, 46	syl 17	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℕ → (#p‘𝑛) = ∏𝑘 ∈ (1...𝑛)if(𝑘 ∈ ℙ, 𝑘, 1))
48	47	eqcomd 2827	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ → ∏𝑘 ∈ (1...𝑛)if(𝑘 ∈ ℙ, 𝑘, 1) = (#p‘𝑛))
49	48	adantr 483	. . . . . . . 8 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → ∏𝑘 ∈ (1...𝑛)if(𝑘 ∈ ℙ, 𝑘, 1) = (#p‘𝑛))
50	44, 49	eqtrd 2856	. . . . . . 7 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → ((𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘))‘𝑛) = (#p‘𝑛))
51	50	oveq1d 7165	. . . . . 6 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → (((𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘))‘𝑛) + 𝑖) = ((#p‘𝑛) + 𝑖))
52	51	oveq1d 7165	. . . . 5 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → ((((𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘))‘𝑛) + 𝑖) gcd 𝑖) = (((#p‘𝑛) + 𝑖) gcd 𝑖))
53	23, 52	breqtrrd 5087	. . . 4 ⊢ ((𝑛 ∈ ℕ ∧ 𝑖 ∈ (2...𝑛)) → 1 < ((((𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘))‘𝑛) + 𝑖) gcd 𝑖))
54	53	ralrimiva 3182	. . 3 ⊢ (𝑛 ∈ ℕ → ∀𝑖 ∈ (2...𝑛)1 < ((((𝑗 ∈ ℕ ↦ ∏𝑘 ∈ (1...𝑗)((𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1))‘𝑘))‘𝑛) + 𝑖) gcd 𝑖))
55	1, 22, 54	prmgaplem8 16388	. 2 ⊢ (𝑛 ∈ ℕ → ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ (𝑛 ≤ (𝑞 − 𝑝) ∧ ∀𝑧 ∈ ((𝑝 + 1)..^𝑞)𝑧 ∉ ℙ))
56	55	rgen 3148	1 ⊢ ∀𝑛 ∈ ℕ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ (𝑛 ≤ (𝑞 − 𝑝) ∧ ∀𝑧 ∈ ((𝑝 + 1)..^𝑞)𝑧 ∉ ℙ)

Syntax hints:   ∧ wa 398   = wceq 1533   ∈ wcel 2110   ∉ wnel 3123  ∀wral 3138  ∃wrex 3139  ifcif 4467   class class class wbr 5059   ↦ cmpt 5139  ⟶wf 6346  ‘cfv 6350  (class class class)co 7150   ↑_m cmap 8400  1c1 10532   + caddc 10534   < clt 10669   ≤ cle 10670   − cmin 10864  ℕcn 11632  2c2 11686  ℕ₀cn0 11891  ℤcz 11975  ...cfz 12886  ..^cfzo 13027  ∏cprod 15253   gcd cgcd 15837  ℙcprime 16009  #_pcprmo 16361

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2156  ax-12 2172  ax-ext 2793  ax-rep 5183  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5322  ax-un 7455  ax-inf2 9098  ax-cnex 10587  ax-resscn 10588  ax-1cn 10589  ax-icn 10590  ax-addcl 10591  ax-addrcl 10592  ax-mulcl 10593  ax-mulrcl 10594  ax-mulcom 10595  ax-addass 10596  ax-mulass 10597  ax-distr 10598  ax-i2m1 10599  ax-1ne0 10600  ax-1rid 10601  ax-rnegex 10602  ax-rrecex 10603  ax-cnre 10604  ax-pre-lttri 10605  ax-pre-lttrn 10606  ax-pre-ltadd 10607  ax-pre-mulgt0 10608  ax-pre-sup 10609

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-fal 1546  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-reu 3145  df-rmo 3146  df-rab 3147  df-v 3497  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-pss 3954  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4562  df-pr 4564  df-tp 4566  df-op 4568  df-uni 4833  df-int 4870  df-iun 4914  df-br 5060  df-opab 5122  df-mpt 5140  df-tr 5166  df-id 5455  df-eprel 5460  df-po 5469  df-so 5470  df-fr 5509  df-se 5510  df-we 5511  df-xp 5556  df-rel 5557  df-cnv 5558  df-co 5559  df-dm 5560  df-rn 5561  df-res 5562  df-ima 5563  df-pred 6143  df-ord 6189  df-on 6190  df-lim 6191  df-suc 6192  df-iota 6309  df-fun 6352  df-fn 6353  df-f 6354  df-f1 6355  df-fo 6356  df-f1o 6357  df-fv 6358  df-isom 6359  df-riota 7108  df-ov 7153  df-oprab 7154  df-mpo 7155  df-om 7575  df-1st 7683  df-2nd 7684  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-1o 8096  df-2o 8097  df-oadd 8100  df-er 8283  df-map 8402  df-en 8504  df-dom 8505  df-sdom 8506  df-fin 8507  df-sup 8900  df-inf 8901  df-oi 8968  df-card 9362  df-pnf 10671  df-mnf 10672  df-xr 10673  df-ltxr 10674  df-le 10675  df-sub 10866  df-neg 10867  df-div 11292  df-nn 11633  df-2 11694  df-3 11695  df-n0 11892  df-z 11976  df-uz 12238  df-rp 12384  df-fz 12887  df-fzo 13028  df-seq 13364  df-exp 13424  df-fac 13628  df-hash 13685  df-cj 14452  df-re 14453  df-im 14454  df-sqrt 14588  df-abs 14589  df-clim 14839  df-prod 15254  df-dvds 15602  df-gcd 15838  df-prm 16010  df-prmo 16362

This theorem is referenced by: (None)