Theorem rpnnen1lem3 12372

Description: Lemma for rpnnen1 12376. (Contributed by Mario Carneiro, 12-May-2013.) (Revised by NM, 13-Aug-2021.) (Proof modification is discouraged.)

Hypotheses

Ref	Expression
rpnnen1lem.1	⊢ 𝑇 = {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥}
rpnnen1lem.2	⊢ 𝐹 = (𝑥 ∈ ℝ ↦ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)))
rpnnen1lem.n	⊢ ℕ ∈ V
rpnnen1lem.q	⊢ ℚ ∈ V

Assertion

Ref	Expression
rpnnen1lem3	⊢ (𝑥 ∈ ℝ → ∀𝑛 ∈ ran (𝐹‘𝑥)𝑛 ≤ 𝑥)

Distinct variable groups:   𝑘,𝐹,𝑛,𝑥   𝑇,𝑛

Allowed substitution hints:   𝑇(𝑥,𝑘)

Proof of Theorem rpnnen1lem3

Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		rpnnen1lem.n	. . . . . . . 8 ⊢ ℕ ∈ V
2	1	mptex 6980	. . . . . . 7 ⊢ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)) ∈ V
3		rpnnen1lem.2	. . . . . . . 8 ⊢ 𝐹 = (𝑥 ∈ ℝ ↦ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)))
4	3	fvmpt2 6774	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)) ∈ V) → (𝐹‘𝑥) = (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)))
5	2, 4	mpan2 689	. . . . . 6 ⊢ (𝑥 ∈ ℝ → (𝐹‘𝑥) = (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)))
6	5	fveq1d 6667	. . . . 5 ⊢ (𝑥 ∈ ℝ → ((𝐹‘𝑥)‘𝑘) = ((𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))‘𝑘))
7		ovex 7183	. . . . . 6 ⊢ (sup(𝑇, ℝ, < ) / 𝑘) ∈ V
8		eqid 2821	. . . . . . 7 ⊢ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)) = (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))
9	8	fvmpt2 6774	. . . . . 6 ⊢ ((𝑘 ∈ ℕ ∧ (sup(𝑇, ℝ, < ) / 𝑘) ∈ V) → ((𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))‘𝑘) = (sup(𝑇, ℝ, < ) / 𝑘))
10	7, 9	mpan2 689	. . . . 5 ⊢ (𝑘 ∈ ℕ → ((𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))‘𝑘) = (sup(𝑇, ℝ, < ) / 𝑘))
11	6, 10	sylan9eq 2876	. . . 4 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑥)‘𝑘) = (sup(𝑇, ℝ, < ) / 𝑘))
12		rpnnen1lem.1	. . . . . . . . 9 ⊢ 𝑇 = {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥}
13	12	rabeq2i 3488	. . . . . . . 8 ⊢ (𝑛 ∈ 𝑇 ↔ (𝑛 ∈ ℤ ∧ (𝑛 / 𝑘) < 𝑥))
14		zre 11979	. . . . . . . . . . . 12 ⊢ (𝑛 ∈ ℤ → 𝑛 ∈ ℝ)
15	14	adantl 484	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑛 ∈ ℝ)
16		simpll 765	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑥 ∈ ℝ)
17		nnre 11639	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℝ)
18		nngt0 11662	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → 0 < 𝑘)
19	17, 18	jca 514	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ ℕ → (𝑘 ∈ ℝ ∧ 0 < 𝑘))
20	19	ad2antlr 725	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑘 ∈ ℝ ∧ 0 < 𝑘))
21		ltdivmul 11509	. . . . . . . . . . 11 ⊢ ((𝑛 ∈ ℝ ∧ 𝑥 ∈ ℝ ∧ (𝑘 ∈ ℝ ∧ 0 < 𝑘)) → ((𝑛 / 𝑘) < 𝑥 ↔ 𝑛 < (𝑘 · 𝑥)))
22	15, 16, 20, 21	syl3anc 1367	. . . . . . . . . 10 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → ((𝑛 / 𝑘) < 𝑥 ↔ 𝑛 < (𝑘 · 𝑥)))
23	17	ad2antlr 725	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑘 ∈ ℝ)
24		remulcl 10616	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℝ ∧ 𝑥 ∈ ℝ) → (𝑘 · 𝑥) ∈ ℝ)
25	23, 16, 24	syl2anc 586	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑘 · 𝑥) ∈ ℝ)
26		ltle 10723	. . . . . . . . . . 11 ⊢ ((𝑛 ∈ ℝ ∧ (𝑘 · 𝑥) ∈ ℝ) → (𝑛 < (𝑘 · 𝑥) → 𝑛 ≤ (𝑘 · 𝑥)))
27	15, 25, 26	syl2anc 586	. . . . . . . . . 10 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑛 < (𝑘 · 𝑥) → 𝑛 ≤ (𝑘 · 𝑥)))
28	22, 27	sylbid 242	. . . . . . . . 9 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → ((𝑛 / 𝑘) < 𝑥 → 𝑛 ≤ (𝑘 · 𝑥)))
29	28	impr 457	. . . . . . . 8 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ ℤ ∧ (𝑛 / 𝑘) < 𝑥)) → 𝑛 ≤ (𝑘 · 𝑥))
30	13, 29	sylan2b 595	. . . . . . 7 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ 𝑇) → 𝑛 ≤ (𝑘 · 𝑥))
31	30	ralrimiva 3182	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥))
32		ssrab2 4056	. . . . . . . . . 10 ⊢ {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ⊆ ℤ
33	12, 32	eqsstri 4001	. . . . . . . . 9 ⊢ 𝑇 ⊆ ℤ
34		zssre 11982	. . . . . . . . 9 ⊢ ℤ ⊆ ℝ
35	33, 34	sstri 3976	. . . . . . . 8 ⊢ 𝑇 ⊆ ℝ
36	35	a1i 11	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → 𝑇 ⊆ ℝ)
37	24	ancoms 461	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑘 · 𝑥) ∈ ℝ)
38	17, 37	sylan2 594	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (𝑘 · 𝑥) ∈ ℝ)
39		btwnz 12078	. . . . . . . . . . . 12 ⊢ ((𝑘 · 𝑥) ∈ ℝ → (∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥) ∧ ∃𝑛 ∈ ℤ (𝑘 · 𝑥) < 𝑛))
40	39	simpld 497	. . . . . . . . . . 11 ⊢ ((𝑘 · 𝑥) ∈ ℝ → ∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥))
41	38, 40	syl 17	. . . . . . . . . 10 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥))
42	22	rexbidva 3296	. . . . . . . . . 10 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥 ↔ ∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥)))
43	41, 42	mpbird 259	. . . . . . . . 9 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥)
44		rabn0 4339	. . . . . . . . 9 ⊢ ({𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅ ↔ ∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥)
45	43, 44	sylibr 236	. . . . . . . 8 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅)
46	12	neeq1i 3080	. . . . . . . 8 ⊢ (𝑇 ≠ ∅ ↔ {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅)
47	45, 46	sylibr 236	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → 𝑇 ≠ ∅)
48		breq2 5063	. . . . . . . . . 10 ⊢ (𝑦 = (𝑘 · 𝑥) → (𝑛 ≤ 𝑦 ↔ 𝑛 ≤ (𝑘 · 𝑥)))
49	48	ralbidv 3197	. . . . . . . . 9 ⊢ (𝑦 = (𝑘 · 𝑥) → (∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦 ↔ ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)))
50	49	rspcev 3623	. . . . . . . 8 ⊢ (((𝑘 · 𝑥) ∈ ℝ ∧ ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)) → ∃𝑦 ∈ ℝ ∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦)
51	38, 31, 50	syl2anc 586	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∃𝑦 ∈ ℝ ∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦)
52		suprleub 11601	. . . . . . 7 ⊢ (((𝑇 ⊆ ℝ ∧ 𝑇 ≠ ∅ ∧ ∃𝑦 ∈ ℝ ∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦) ∧ (𝑘 · 𝑥) ∈ ℝ) → (sup(𝑇, ℝ, < ) ≤ (𝑘 · 𝑥) ↔ ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)))
53	36, 47, 51, 38, 52	syl31anc 1369	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (sup(𝑇, ℝ, < ) ≤ (𝑘 · 𝑥) ↔ ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)))
54	31, 53	mpbird 259	. . . . 5 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ≤ (𝑘 · 𝑥))
55	12, 3	rpnnen1lem2 12370	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ∈ ℤ)
56	55	zred 12081	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ∈ ℝ)
57		simpl 485	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → 𝑥 ∈ ℝ)
58	19	adantl 484	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (𝑘 ∈ ℝ ∧ 0 < 𝑘))
59		ledivmul 11510	. . . . . 6 ⊢ ((sup(𝑇, ℝ, < ) ∈ ℝ ∧ 𝑥 ∈ ℝ ∧ (𝑘 ∈ ℝ ∧ 0 < 𝑘)) → ((sup(𝑇, ℝ, < ) / 𝑘) ≤ 𝑥 ↔ sup(𝑇, ℝ, < ) ≤ (𝑘 · 𝑥)))
60	56, 57, 58, 59	syl3anc 1367	. . . . 5 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ((sup(𝑇, ℝ, < ) / 𝑘) ≤ 𝑥 ↔ sup(𝑇, ℝ, < ) ≤ (𝑘 · 𝑥)))
61	54, 60	mpbird 259	. . . 4 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (sup(𝑇, ℝ, < ) / 𝑘) ≤ 𝑥)
62	11, 61	eqbrtrd 5081	. . 3 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑥)‘𝑘) ≤ 𝑥)
63	62	ralrimiva 3182	. 2 ⊢ (𝑥 ∈ ℝ → ∀𝑘 ∈ ℕ ((𝐹‘𝑥)‘𝑘) ≤ 𝑥)
64		rpnnen1lem.q	. . . . 5 ⊢ ℚ ∈ V
65	12, 3, 1, 64	rpnnen1lem1 12371	. . . 4 ⊢ (𝑥 ∈ ℝ → (𝐹‘𝑥) ∈ (ℚ ↑m ℕ))
66	64, 1	elmap 8429	. . . 4 ⊢ ((𝐹‘𝑥) ∈ (ℚ ↑m ℕ) ↔ (𝐹‘𝑥):ℕ⟶ℚ)
67	65, 66	sylib 220	. . 3 ⊢ (𝑥 ∈ ℝ → (𝐹‘𝑥):ℕ⟶ℚ)
68		ffn 6509	. . 3 ⊢ ((𝐹‘𝑥):ℕ⟶ℚ → (𝐹‘𝑥) Fn ℕ)
69		breq1 5062	. . . 4 ⊢ (𝑛 = ((𝐹‘𝑥)‘𝑘) → (𝑛 ≤ 𝑥 ↔ ((𝐹‘𝑥)‘𝑘) ≤ 𝑥))
70	69	ralrn 6849	. . 3 ⊢ ((𝐹‘𝑥) Fn ℕ → (∀𝑛 ∈ ran (𝐹‘𝑥)𝑛 ≤ 𝑥 ↔ ∀𝑘 ∈ ℕ ((𝐹‘𝑥)‘𝑘) ≤ 𝑥))
71	67, 68, 70	3syl 18	. 2 ⊢ (𝑥 ∈ ℝ → (∀𝑛 ∈ ran (𝐹‘𝑥)𝑛 ≤ 𝑥 ↔ ∀𝑘 ∈ ℕ ((𝐹‘𝑥)‘𝑘) ≤ 𝑥))
72	63, 71	mpbird 259	1 ⊢ (𝑥 ∈ ℝ → ∀𝑛 ∈ ran (𝐹‘𝑥)𝑛 ≤ 𝑥)

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1533   ∈ wcel 2110   ≠ wne 3016  ∀wral 3138  ∃wrex 3139  {crab 3142  Vcvv 3495   ⊆ wss 3936  ∅c0 4291   class class class wbr 5059   ↦ cmpt 5139  ran crn 5551   Fn wfn 6345  ⟶wf 6346  ‘cfv 6350  (class class class)co 7150   ↑_m cmap 8400  supcsup 8898  ℝcr 10530  0cc0 10531   · cmul 10536   < clt 10669   ≤ cle 10670   / cdiv 11291  ℕcn 11632  ℤcz 11975  ℚcq 12342

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-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-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-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-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-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-er 8283  df-map 8402  df-en 8504  df-dom 8505  df-sdom 8506  df-sup 8900  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-n0 11892  df-z 11976  df-q 12343

This theorem is referenced by:  rpnnen1lem4  12373  rpnnen1lem5  12374