Theorem caucvgrelemcau 11542

Description: Lemma for caucvgre 11543. Converting the Cauchy condition. (Contributed by Jim Kingdon, 20-Jul-2021.)

Hypotheses

Ref	Expression
caucvgre.f	⊢ (𝜑 → 𝐹:ℕ⟶ℝ)
caucvgre.cau	⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑛)((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ∧ (𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛))))

Assertion

Ref	Expression
caucvgrelemcau	⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ ℕ (𝑛 <ℝ 𝑘 → ((𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) ∧ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)))))

Distinct variable groups:   𝑘,𝐹,𝑛   𝜑,𝑘,𝑛   𝑘,𝑟,𝑛

Allowed substitution hints:   𝜑(𝑟)   𝐹(𝑟)

Proof of Theorem caucvgrelemcau

Step	Hyp	Ref	Expression
1		simplr 529	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → 𝑛 ∈ ℕ)
2	1	nnred 9156	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → 𝑛 ∈ ℝ)
3		simpr 110	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ)
4	3	nnred 9156	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℝ)
5		ltle 8267	. . . . . 6 ⊢ ((𝑛 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑛 < 𝑘 → 𝑛 ≤ 𝑘))
6	2, 4, 5	syl2anc 411	. . . . 5 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (𝑛 < 𝑘 → 𝑛 ≤ 𝑘))
7		eluznn 9834	. . . . . . . . . . . 12 ⊢ ((𝑛 ∈ ℕ ∧ 𝑘 ∈ (ℤ≥‘𝑛)) → 𝑘 ∈ ℕ)
8	7	ex 115	. . . . . . . . . . 11 ⊢ (𝑛 ∈ ℕ → (𝑘 ∈ (ℤ≥‘𝑛) → 𝑘 ∈ ℕ))
9		nnz 9498	. . . . . . . . . . . . 13 ⊢ (𝑛 ∈ ℕ → 𝑛 ∈ ℤ)
10		eluz1 9759	. . . . . . . . . . . . 13 ⊢ (𝑛 ∈ ℤ → (𝑘 ∈ (ℤ≥‘𝑛) ↔ (𝑘 ∈ ℤ ∧ 𝑛 ≤ 𝑘)))
11	9, 10	syl 14	. . . . . . . . . . . 12 ⊢ (𝑛 ∈ ℕ → (𝑘 ∈ (ℤ≥‘𝑛) ↔ (𝑘 ∈ ℤ ∧ 𝑛 ≤ 𝑘)))
12		simpr 110	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℤ ∧ 𝑛 ≤ 𝑘) → 𝑛 ≤ 𝑘)
13	11, 12	biimtrdi 163	. . . . . . . . . . 11 ⊢ (𝑛 ∈ ℕ → (𝑘 ∈ (ℤ≥‘𝑛) → 𝑛 ≤ 𝑘))
14	8, 13	jcad 307	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℕ → (𝑘 ∈ (ℤ≥‘𝑛) → (𝑘 ∈ ℕ ∧ 𝑛 ≤ 𝑘)))
15		nnz 9498	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℤ)
16	15	anim1i 340	. . . . . . . . . . 11 ⊢ ((𝑘 ∈ ℕ ∧ 𝑛 ≤ 𝑘) → (𝑘 ∈ ℤ ∧ 𝑛 ≤ 𝑘))
17	16, 11	imbitrrid 156	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℕ → ((𝑘 ∈ ℕ ∧ 𝑛 ≤ 𝑘) → 𝑘 ∈ (ℤ≥‘𝑛)))
18	14, 17	impbid 129	. . . . . . . . 9 ⊢ (𝑛 ∈ ℕ → (𝑘 ∈ (ℤ≥‘𝑛) ↔ (𝑘 ∈ ℕ ∧ 𝑛 ≤ 𝑘)))
19	18	adantl 277	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (𝑘 ∈ (ℤ≥‘𝑛) ↔ (𝑘 ∈ ℕ ∧ 𝑛 ≤ 𝑘)))
20	19	biimpar 297	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ (𝑘 ∈ ℕ ∧ 𝑛 ≤ 𝑘)) → 𝑘 ∈ (ℤ≥‘𝑛))
21		caucvgre.cau	. . . . . . . . 9 ⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑛)((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ∧ (𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛))))
22	21	r19.21bi 2620	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → ∀𝑘 ∈ (ℤ≥‘𝑛)((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ∧ (𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛))))
23	22	r19.21bi 2620	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ≥‘𝑛)) → ((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ∧ (𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛))))
24	20, 23	syldan 282	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ (𝑘 ∈ ℕ ∧ 𝑛 ≤ 𝑘)) → ((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ∧ (𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛))))
25	24	expr 375	. . . . 5 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (𝑛 ≤ 𝑘 → ((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ∧ (𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛)))))
26	6, 25	syld 45	. . . 4 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (𝑛 < 𝑘 → ((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ∧ (𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛)))))
27		ltxrlt 8245	. . . . 5 ⊢ ((𝑛 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑛 < 𝑘 ↔ 𝑛 <ℝ 𝑘))
28	2, 4, 27	syl2anc 411	. . . 4 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (𝑛 < 𝑘 ↔ 𝑛 <ℝ 𝑘))
29		caucvgre.f	. . . . . . . . 9 ⊢ (𝜑 → 𝐹:ℕ⟶ℝ)
30	29	ad2antrr 488	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → 𝐹:ℕ⟶ℝ)
31	30, 1	ffvelcdmd 5783	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑛) ∈ ℝ)
32	30, 3	ffvelcdmd 5783	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℝ)
33	1	nnrecred 9190	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (1 / 𝑛) ∈ ℝ)
34	32, 33	readdcld 8209	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑘) + (1 / 𝑛)) ∈ ℝ)
35		ltxrlt 8245	. . . . . . 7 ⊢ (((𝐹‘𝑛) ∈ ℝ ∧ ((𝐹‘𝑘) + (1 / 𝑛)) ∈ ℝ) → ((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ↔ (𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (1 / 𝑛))))
36	31, 34, 35	syl2anc 411	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ↔ (𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (1 / 𝑛))))
37		nnap0 9172	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℕ → 𝑛 # 0)
38	1, 37	syl 14	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → 𝑛 # 0)
39		caucvgrelemrec 11541	. . . . . . . . 9 ⊢ ((𝑛 ∈ ℝ ∧ 𝑛 # 0) → (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1) = (1 / 𝑛))
40	2, 38, 39	syl2anc 411	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1) = (1 / 𝑛))
41	40	oveq2d 6034	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑘) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) = ((𝐹‘𝑘) + (1 / 𝑛)))
42	41	breq2d 4100	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) ↔ (𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (1 / 𝑛))))
43	36, 42	bitr4d 191	. . . . 5 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ↔ (𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1))))
44	31, 33	readdcld 8209	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑛) + (1 / 𝑛)) ∈ ℝ)
45		ltxrlt 8245	. . . . . . 7 ⊢ (((𝐹‘𝑘) ∈ ℝ ∧ ((𝐹‘𝑛) + (1 / 𝑛)) ∈ ℝ) → ((𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛)) ↔ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (1 / 𝑛))))
46	32, 44, 45	syl2anc 411	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛)) ↔ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (1 / 𝑛))))
47	40	oveq2d 6034	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑛) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) = ((𝐹‘𝑛) + (1 / 𝑛)))
48	47	breq2d 4100	. . . . . 6 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) ↔ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (1 / 𝑛))))
49	46, 48	bitr4d 191	. . . . 5 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → ((𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛)) ↔ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1))))
50	43, 49	anbi12d 473	. . . 4 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (((𝐹‘𝑛) < ((𝐹‘𝑘) + (1 / 𝑛)) ∧ (𝐹‘𝑘) < ((𝐹‘𝑛) + (1 / 𝑛))) ↔ ((𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) ∧ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)))))
51	26, 28, 50	3imtr3d 202	. . 3 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ ℕ) → (𝑛 <ℝ 𝑘 → ((𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) ∧ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)))))
52	51	ralrimiva 2605	. 2 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → ∀𝑘 ∈ ℕ (𝑛 <ℝ 𝑘 → ((𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) ∧ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)))))
53	52	ralrimiva 2605	1 ⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ ℕ (𝑛 <ℝ 𝑘 → ((𝐹‘𝑛) <ℝ ((𝐹‘𝑘) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)) ∧ (𝐹‘𝑘) <ℝ ((𝐹‘𝑛) + (℩𝑟 ∈ ℝ (𝑛 · 𝑟) = 1)))))

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105   = wceq 1397   ∈ wcel 2202  ∀wral 2510   class class class wbr 4088  ⟶wf 5322  ‘cfv 5326  ℩crio 5970  (class class class)co 6018  ℝcr 8031  0cc0 8032  1c1 8033   + caddc 8035   <_ℝ cltrr 8036   · cmul 8037   < clt 8214   ≤ cle 8215   # cap 8761   / cdiv 8852  ℕcn 9143  ℤcz 9479  ℤ_≥cuz 9755

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-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8123  ax-resscn 8124  ax-1cn 8125  ax-1re 8126  ax-icn 8127  ax-addcl 8128  ax-addrcl 8129  ax-mulcl 8130  ax-mulrcl 8131  ax-addcom 8132  ax-mulcom 8133  ax-addass 8134  ax-mulass 8135  ax-distr 8136  ax-i2m1 8137  ax-0lt1 8138  ax-1rid 8139  ax-0id 8140  ax-rnegex 8141  ax-precex 8142  ax-cnre 8143  ax-pre-ltirr 8144  ax-pre-ltwlin 8145  ax-pre-lttrn 8146  ax-pre-apti 8147  ax-pre-ltadd 8148  ax-pre-mulgt0 8149  ax-pre-mulext 8150

This theorem depends on definitions:  df-bi 117  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-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-po 4393  df-iso 4394  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-fv 5334  df-riota 5971  df-ov 6021  df-oprab 6022  df-mpo 6023  df-pnf 8216  df-mnf 8217  df-xr 8218  df-ltxr 8219  df-le 8220  df-sub 8352  df-neg 8353  df-reap 8755  df-ap 8762  df-div 8853  df-inn 9144  df-z 9480  df-uz 9756

This theorem is referenced by:  caucvgre  11543