Theorem rpnnen1lem3 11816

Description: Lemma for rpnnen1 11820. (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 6486	. . . . . . 7 ⊢ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)) ∈ V
3		rpnnen1lem.2	. . . . . . . 8 ⊢ 𝐹 = (𝑥 ∈ ℝ ↦ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)))
4	3	fvmpt2 6291	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)) ∈ V) → (𝐹‘𝑥) = (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)))
5	2, 4	mpan2 707	. . . . . 6 ⊢ (𝑥 ∈ ℝ → (𝐹‘𝑥) = (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)))
6	5	fveq1d 6193	. . . . 5 ⊢ (𝑥 ∈ ℝ → ((𝐹‘𝑥)‘𝑘) = ((𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))‘𝑘))
7		ovex 6678	. . . . . 6 ⊢ (sup(𝑇, ℝ, < ) / 𝑘) ∈ V
8		eqid 2622	. . . . . . 7 ⊢ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘)) = (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))
9	8	fvmpt2 6291	. . . . . 6 ⊢ ((𝑘 ∈ ℕ ∧ (sup(𝑇, ℝ, < ) / 𝑘) ∈ V) → ((𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))‘𝑘) = (sup(𝑇, ℝ, < ) / 𝑘))
10	7, 9	mpan2 707	. . . . 5 ⊢ (𝑘 ∈ ℕ → ((𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))‘𝑘) = (sup(𝑇, ℝ, < ) / 𝑘))
11	6, 10	sylan9eq 2676	. . . 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 3197	. . . . . . . 8 ⊢ (𝑛 ∈ 𝑇 ↔ (𝑛 ∈ ℤ ∧ (𝑛 / 𝑘) < 𝑥))
14		zre 11381	. . . . . . . . . . . 12 ⊢ (𝑛 ∈ ℤ → 𝑛 ∈ ℝ)
15	14	adantl 482	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑛 ∈ ℝ)
16		simpll 790	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑥 ∈ ℝ)
17		nnre 11027	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℝ)
18		nngt0 11049	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → 0 < 𝑘)
19	17, 18	jca 554	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ ℕ → (𝑘 ∈ ℝ ∧ 0 < 𝑘))
20	19	ad2antlr 763	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑘 ∈ ℝ ∧ 0 < 𝑘))
21		ltdivmul 10898	. . . . . . . . . . 11 ⊢ ((𝑛 ∈ ℝ ∧ 𝑥 ∈ ℝ ∧ (𝑘 ∈ ℝ ∧ 0 < 𝑘)) → ((𝑛 / 𝑘) < 𝑥 ↔ 𝑛 < (𝑘 · 𝑥)))
22	15, 16, 20, 21	syl3anc 1326	. . . . . . . . . 10 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → ((𝑛 / 𝑘) < 𝑥 ↔ 𝑛 < (𝑘 · 𝑥)))
23	17	ad2antlr 763	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑘 ∈ ℝ)
24		remulcl 10021	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℝ ∧ 𝑥 ∈ ℝ) → (𝑘 · 𝑥) ∈ ℝ)
25	23, 16, 24	syl2anc 693	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑘 · 𝑥) ∈ ℝ)
26		ltle 10126	. . . . . . . . . . 11 ⊢ ((𝑛 ∈ ℝ ∧ (𝑘 · 𝑥) ∈ ℝ) → (𝑛 < (𝑘 · 𝑥) → 𝑛 ≤ (𝑘 · 𝑥)))
27	15, 25, 26	syl2anc 693	. . . . . . . . . 10 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑛 < (𝑘 · 𝑥) → 𝑛 ≤ (𝑘 · 𝑥)))
28	22, 27	sylbid 230	. . . . . . . . 9 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → ((𝑛 / 𝑘) < 𝑥 → 𝑛 ≤ (𝑘 · 𝑥)))
29	28	impr 649	. . . . . . . 8 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ ℤ ∧ (𝑛 / 𝑘) < 𝑥)) → 𝑛 ≤ (𝑘 · 𝑥))
30	13, 29	sylan2b 492	. . . . . . 7 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ 𝑇) → 𝑛 ≤ (𝑘 · 𝑥))
31	30	ralrimiva 2966	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥))
32		ssrab2 3687	. . . . . . . . . 10 ⊢ {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ⊆ ℤ
33	12, 32	eqsstri 3635	. . . . . . . . 9 ⊢ 𝑇 ⊆ ℤ
34		zssre 11384	. . . . . . . . 9 ⊢ ℤ ⊆ ℝ
35	33, 34	sstri 3612	. . . . . . . 8 ⊢ 𝑇 ⊆ ℝ
36	35	a1i 11	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → 𝑇 ⊆ ℝ)
37	24	ancoms 469	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑘 · 𝑥) ∈ ℝ)
38	17, 37	sylan2 491	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (𝑘 · 𝑥) ∈ ℝ)
39		btwnz 11479	. . . . . . . . . . . 12 ⊢ ((𝑘 · 𝑥) ∈ ℝ → (∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥) ∧ ∃𝑛 ∈ ℤ (𝑘 · 𝑥) < 𝑛))
40	39	simpld 475	. . . . . . . . . . 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 3049	. . . . . . . . . 10 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥 ↔ ∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥)))
43	41, 42	mpbird 247	. . . . . . . . 9 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥)
44		rabn0 3958	. . . . . . . . 9 ⊢ ({𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅ ↔ ∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥)
45	43, 44	sylibr 224	. . . . . . . 8 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅)
46	12	neeq1i 2858	. . . . . . . 8 ⊢ (𝑇 ≠ ∅ ↔ {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅)
47	45, 46	sylibr 224	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → 𝑇 ≠ ∅)
48		breq2 4657	. . . . . . . . . 10 ⊢ (𝑦 = (𝑘 · 𝑥) → (𝑛 ≤ 𝑦 ↔ 𝑛 ≤ (𝑘 · 𝑥)))
49	48	ralbidv 2986	. . . . . . . . 9 ⊢ (𝑦 = (𝑘 · 𝑥) → (∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦 ↔ ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)))
50	49	rspcev 3309	. . . . . . . 8 ⊢ (((𝑘 · 𝑥) ∈ ℝ ∧ ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)) → ∃𝑦 ∈ ℝ ∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦)
51	38, 31, 50	syl2anc 693	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∃𝑦 ∈ ℝ ∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦)
52		suprleub 10989	. . . . . . 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 1329	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (sup(𝑇, ℝ, < ) ≤ (𝑘 · 𝑥) ↔ ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)))
54	31, 53	mpbird 247	. . . . 5 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ≤ (𝑘 · 𝑥))
55	12, 3	rpnnen1lem2 11814	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ∈ ℤ)
56	55	zred 11482	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ∈ ℝ)
57		simpl 473	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → 𝑥 ∈ ℝ)
58	19	adantl 482	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (𝑘 ∈ ℝ ∧ 0 < 𝑘))
59		ledivmul 10899	. . . . . 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 1326	. . . . 5 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ((sup(𝑇, ℝ, < ) / 𝑘) ≤ 𝑥 ↔ sup(𝑇, ℝ, < ) ≤ (𝑘 · 𝑥)))
61	54, 60	mpbird 247	. . . 4 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (sup(𝑇, ℝ, < ) / 𝑘) ≤ 𝑥)
62	11, 61	eqbrtrd 4675	. . 3 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑥)‘𝑘) ≤ 𝑥)
63	62	ralrimiva 2966	. 2 ⊢ (𝑥 ∈ ℝ → ∀𝑘 ∈ ℕ ((𝐹‘𝑥)‘𝑘) ≤ 𝑥)
64		rpnnen1lem.q	. . . . 5 ⊢ ℚ ∈ V
65	12, 3, 1, 64	rpnnen1lem1 11815	. . . 4 ⊢ (𝑥 ∈ ℝ → (𝐹‘𝑥) ∈ (ℚ ↑𝑚 ℕ))
66	64, 1	elmap 7886	. . . 4 ⊢ ((𝐹‘𝑥) ∈ (ℚ ↑𝑚 ℕ) ↔ (𝐹‘𝑥):ℕ⟶ℚ)
67	65, 66	sylib 208	. . 3 ⊢ (𝑥 ∈ ℝ → (𝐹‘𝑥):ℕ⟶ℚ)
68		ffn 6045	. . 3 ⊢ ((𝐹‘𝑥):ℕ⟶ℚ → (𝐹‘𝑥) Fn ℕ)
69		breq1 4656	. . . 4 ⊢ (𝑛 = ((𝐹‘𝑥)‘𝑘) → (𝑛 ≤ 𝑥 ↔ ((𝐹‘𝑥)‘𝑘) ≤ 𝑥))
70	69	ralrn 6362	. . 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 247	1 ⊢ (𝑥 ∈ ℝ → ∀𝑛 ∈ ran (𝐹‘𝑥)𝑛 ≤ 𝑥)

Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 384   = wceq 1483   ∈ wcel 1990   ≠ wne 2794  ∀wral 2912  ∃wrex 2913  {crab 2916  Vcvv 3200   ⊆ wss 3574  ∅c0 3915   class class class wbr 4653   ↦ cmpt 4729  ran crn 5115   Fn wfn 5883  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650   ↑_𝑚 cmap 7857  supcsup 8346  ℝcr 9935  0cc0 9936   · cmul 9941   < clt 10074   ≤ cle 10075   / cdiv 10684  ℕcn 11020  ℤcz 11377  ℚcq 11788

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013  ax-pre-sup 10014

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-er 7742  df-map 7859  df-en 7956  df-dom 7957  df-sdom 7958  df-sup 8348  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-div 10685  df-nn 11021  df-n0 11293  df-z 11378  df-q 11789

This theorem is referenced by:  rpnnen1lem4  11817  rpnnen1lem5  11818