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Theorem qabvle 27118

Description: By using induction on 𝑁, we show a long-range inequality coming from the triangle inequality. (Contributed by Mario Carneiro, 10-Sep-2014.)

**Hypotheses**
Ref	Expression
qrng.q	⊢ 𝑄 = (ℂ_fld ↾_s ℚ)
qabsabv.a	⊢ 𝐴 = (AbsVal‘𝑄)

**Assertion**
Ref	Expression
qabvle	⊢ ((𝐹 ∈ 𝐴 ∧ 𝑁 ∈ ℕ₀) → (𝐹‘𝑁) ≤ 𝑁)

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

Step	Hyp	Ref	Expression
1		fveq2 6889	. . . . 5 ⊢ (𝑘 = 0 → (𝐹‘𝑘) = (𝐹‘0))
2		id 22	. . . . 5 ⊢ (𝑘 = 0 → 𝑘 = 0)
3	1, 2	breq12d 5161	. . . 4 ⊢ (𝑘 = 0 → ((𝐹‘𝑘) ≤ 𝑘 ↔ (𝐹‘0) ≤ 0))
4	3	imbi2d 341	. . 3 ⊢ (𝑘 = 0 → ((𝐹 ∈ 𝐴 → (𝐹‘𝑘) ≤ 𝑘) ↔ (𝐹 ∈ 𝐴 → (𝐹‘0) ≤ 0)))
5		fveq2 6889	. . . . 5 ⊢ (𝑘 = 𝑛 → (𝐹‘𝑘) = (𝐹‘𝑛))
6		id 22	. . . . 5 ⊢ (𝑘 = 𝑛 → 𝑘 = 𝑛)
7	5, 6	breq12d 5161	. . . 4 ⊢ (𝑘 = 𝑛 → ((𝐹‘𝑘) ≤ 𝑘 ↔ (𝐹‘𝑛) ≤ 𝑛))
8	7	imbi2d 341	. . 3 ⊢ (𝑘 = 𝑛 → ((𝐹 ∈ 𝐴 → (𝐹‘𝑘) ≤ 𝑘) ↔ (𝐹 ∈ 𝐴 → (𝐹‘𝑛) ≤ 𝑛)))
9		fveq2 6889	. . . . 5 ⊢ (𝑘 = (𝑛 + 1) → (𝐹‘𝑘) = (𝐹‘(𝑛 + 1)))
10		id 22	. . . . 5 ⊢ (𝑘 = (𝑛 + 1) → 𝑘 = (𝑛 + 1))
11	9, 10	breq12d 5161	. . . 4 ⊢ (𝑘 = (𝑛 + 1) → ((𝐹‘𝑘) ≤ 𝑘 ↔ (𝐹‘(𝑛 + 1)) ≤ (𝑛 + 1)))
12	11	imbi2d 341	. . 3 ⊢ (𝑘 = (𝑛 + 1) → ((𝐹 ∈ 𝐴 → (𝐹‘𝑘) ≤ 𝑘) ↔ (𝐹 ∈ 𝐴 → (𝐹‘(𝑛 + 1)) ≤ (𝑛 + 1))))
13		fveq2 6889	. . . . 5 ⊢ (𝑘 = 𝑁 → (𝐹‘𝑘) = (𝐹‘𝑁))
14		id 22	. . . . 5 ⊢ (𝑘 = 𝑁 → 𝑘 = 𝑁)
15	13, 14	breq12d 5161	. . . 4 ⊢ (𝑘 = 𝑁 → ((𝐹‘𝑘) ≤ 𝑘 ↔ (𝐹‘𝑁) ≤ 𝑁))
16	15	imbi2d 341	. . 3 ⊢ (𝑘 = 𝑁 → ((𝐹 ∈ 𝐴 → (𝐹‘𝑘) ≤ 𝑘) ↔ (𝐹 ∈ 𝐴 → (𝐹‘𝑁) ≤ 𝑁)))
17		qabsabv.a	. . . . 5 ⊢ 𝐴 = (AbsVal‘𝑄)
18		qrng.q	. . . . . 6 ⊢ 𝑄 = (ℂ_fld ↾_s ℚ)
19	18	qrng0 27114	. . . . 5 ⊢ 0 = (0_g‘𝑄)
20	17, 19	abv0 20432	. . . 4 ⊢ (𝐹 ∈ 𝐴 → (𝐹‘0) = 0)
21		0le0 12310	. . . 4 ⊢ 0 ≤ 0
22	20, 21	eqbrtrdi 5187	. . 3 ⊢ (𝐹 ∈ 𝐴 → (𝐹‘0) ≤ 0)
23		nn0p1nn 12508	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℕ₀ → (𝑛 + 1) ∈ ℕ)
24	23	ad2antrl 727	. . . . . . . . 9 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝑛 + 1) ∈ ℕ)
25		nnq 12943	. . . . . . . . 9 ⊢ ((𝑛 + 1) ∈ ℕ → (𝑛 + 1) ∈ ℚ)
26	24, 25	syl 17	. . . . . . . 8 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝑛 + 1) ∈ ℚ)
27	18	qrngbas 27112	. . . . . . . . 9 ⊢ ℚ = (Base‘𝑄)
28	17, 27	abvcl 20425	. . . . . . . 8 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 + 1) ∈ ℚ) → (𝐹‘(𝑛 + 1)) ∈ ℝ)
29	26, 28	syldan 592	. . . . . . 7 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝐹‘(𝑛 + 1)) ∈ ℝ)
30		nn0z 12580	. . . . . . . . . . 11 ⊢ (𝑛 ∈ ℕ₀ → 𝑛 ∈ ℤ)
31	30	ad2antrl 727	. . . . . . . . . 10 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → 𝑛 ∈ ℤ)
32		zq 12935	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℤ → 𝑛 ∈ ℚ)
33	31, 32	syl 17	. . . . . . . . 9 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → 𝑛 ∈ ℚ)
34	17, 27	abvcl 20425	. . . . . . . . 9 ⊢ ((𝐹 ∈ 𝐴 ∧ 𝑛 ∈ ℚ) → (𝐹‘𝑛) ∈ ℝ)
35	33, 34	syldan 592	. . . . . . . 8 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝐹‘𝑛) ∈ ℝ)
36		peano2re 11384	. . . . . . . 8 ⊢ ((𝐹‘𝑛) ∈ ℝ → ((𝐹‘𝑛) + 1) ∈ ℝ)
37	35, 36	syl 17	. . . . . . 7 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → ((𝐹‘𝑛) + 1) ∈ ℝ)
38	31	zred 12663	. . . . . . . 8 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → 𝑛 ∈ ℝ)
39		peano2re 11384	. . . . . . . 8 ⊢ (𝑛 ∈ ℝ → (𝑛 + 1) ∈ ℝ)
40	38, 39	syl 17	. . . . . . 7 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝑛 + 1) ∈ ℝ)
41		simpl 484	. . . . . . . . 9 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → 𝐹 ∈ 𝐴)
42		1z 12589	. . . . . . . . . 10 ⊢ 1 ∈ ℤ
43		zq 12935	. . . . . . . . . 10 ⊢ (1 ∈ ℤ → 1 ∈ ℚ)
44	42, 43	mp1i 13	. . . . . . . . 9 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → 1 ∈ ℚ)
45		qex 12942	. . . . . . . . . . 11 ⊢ ℚ ∈ V
46		cnfldadd 20942	. . . . . . . . . . . 12 ⊢ + = (+_g‘ℂ_fld)
47	18, 46	ressplusg 17232	. . . . . . . . . . 11 ⊢ (ℚ ∈ V → + = (+_g‘𝑄))
48	45, 47	ax-mp 5	. . . . . . . . . 10 ⊢ + = (+_g‘𝑄)
49	17, 27, 48	abvtri 20431	. . . . . . . . 9 ⊢ ((𝐹 ∈ 𝐴 ∧ 𝑛 ∈ ℚ ∧ 1 ∈ ℚ) → (𝐹‘(𝑛 + 1)) ≤ ((𝐹‘𝑛) + (𝐹‘1)))
50	41, 33, 44, 49	syl3anc 1372	. . . . . . . 8 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝐹‘(𝑛 + 1)) ≤ ((𝐹‘𝑛) + (𝐹‘1)))
51		ax-1ne0 11176	. . . . . . . . . . 11 ⊢ 1 ≠ 0
52	18	qrng1 27115	. . . . . . . . . . . 12 ⊢ 1 = (1_r‘𝑄)
53	17, 52, 19	abv1z 20433	. . . . . . . . . . 11 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0) → (𝐹‘1) = 1)
54	51, 53	mpan2 690	. . . . . . . . . 10 ⊢ (𝐹 ∈ 𝐴 → (𝐹‘1) = 1)
55	54	adantr 482	. . . . . . . . 9 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝐹‘1) = 1)
56	55	oveq2d 7422	. . . . . . . 8 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → ((𝐹‘𝑛) + (𝐹‘1)) = ((𝐹‘𝑛) + 1))
57	50, 56	breqtrd 5174	. . . . . . 7 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝐹‘(𝑛 + 1)) ≤ ((𝐹‘𝑛) + 1))
58		1red 11212	. . . . . . . 8 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → 1 ∈ ℝ)
59		simprr 772	. . . . . . . 8 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝐹‘𝑛) ≤ 𝑛)
60	35, 38, 58, 59	leadd1dd 11825	. . . . . . 7 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → ((𝐹‘𝑛) + 1) ≤ (𝑛 + 1))
61	29, 37, 40, 57, 60	letrd 11368	. . . . . 6 ⊢ ((𝐹 ∈ 𝐴 ∧ (𝑛 ∈ ℕ₀ ∧ (𝐹‘𝑛) ≤ 𝑛)) → (𝐹‘(𝑛 + 1)) ≤ (𝑛 + 1))
62	61	expr 458	. . . . 5 ⊢ ((𝐹 ∈ 𝐴 ∧ 𝑛 ∈ ℕ₀) → ((𝐹‘𝑛) ≤ 𝑛 → (𝐹‘(𝑛 + 1)) ≤ (𝑛 + 1)))
63	62	expcom 415	. . . 4 ⊢ (𝑛 ∈ ℕ₀ → (𝐹 ∈ 𝐴 → ((𝐹‘𝑛) ≤ 𝑛 → (𝐹‘(𝑛 + 1)) ≤ (𝑛 + 1))))
64	63	a2d 29	. . 3 ⊢ (𝑛 ∈ ℕ₀ → ((𝐹 ∈ 𝐴 → (𝐹‘𝑛) ≤ 𝑛) → (𝐹 ∈ 𝐴 → (𝐹‘(𝑛 + 1)) ≤ (𝑛 + 1))))
65	4, 8, 12, 16, 22, 64	nn0ind 12654	. 2 ⊢ (𝑁 ∈ ℕ₀ → (𝐹 ∈ 𝐴 → (𝐹‘𝑁) ≤ 𝑁))
66	65	impcom 409	1 ⊢ ((𝐹 ∈ 𝐴 ∧ 𝑁 ∈ ℕ₀) → (𝐹‘𝑁) ≤ 𝑁)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 397 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 Vcvv 3475 class class class wbr 5148 ‘cfv 6541 (class class class)co 7406 ℝcr 11106 0cc0 11107 1c1 11108 + caddc 11110 ≤ cle 11246 ℕcn 12209 ℕ₀cn0 12469 ℤcz 12555 ℚcq 12929 ↾_s cress 17170 +_gcplusg 17194 AbsValcabv 20417 ℂ_fldccnfld 20937

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7722 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184 ax-addf 11186 ax-mulf 11187

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6298 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6493 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7362 df-ov 7409 df-oprab 7410 df-mpo 7411 df-om 7853 df-1st 7972 df-2nd 7973 df-tpos 8208 df-frecs 8263 df-wrecs 8294 df-recs 8368 df-rdg 8407 df-1o 8463 df-er 8700 df-map 8819 df-en 8937 df-dom 8938 df-sdom 8939 df-fin 8940 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-div 11869 df-nn 12210 df-2 12272 df-3 12273 df-4 12274 df-5 12275 df-6 12276 df-7 12277 df-8 12278 df-9 12279 df-n0 12470 df-z 12556 df-dec 12675 df-uz 12820 df-q 12930 df-ico 13327 df-fz 13482 df-struct 17077 df-sets 17094 df-slot 17112 df-ndx 17124 df-base 17142 df-ress 17171 df-plusg 17207 df-mulr 17208 df-starv 17209 df-tset 17213 df-ple 17214 df-ds 17216 df-unif 17217 df-0g 17384 df-mgm 18558 df-sgrp 18607 df-mnd 18623 df-grp 18819 df-minusg 18820 df-subg 18998 df-cmn 19645 df-mgp 19983 df-ur 20000 df-ring 20052 df-cring 20053 df-oppr 20143 df-dvdsr 20164 df-unit 20165 df-invr 20195 df-dvr 20208 df-drng 20310 df-subrg 20354 df-abv 20418 df-cnfld 20938

This theorem is referenced by: ostth2lem2 27127 ostth2 27130

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