Theorem lmle 24370

Description: If the distance from each member of a converging sequence to a given point is less than or equal to a given amount, so is the convergence value. (Contributed by NM, 23-Dec-2007.) (Proof shortened by Mario Carneiro, 1-May-2014.)

Hypotheses

Ref	Expression
lmle.1	⊢ 𝑍 = (ℤ≥‘𝑀)
lmle.3	⊢ 𝐽 = (MetOpen‘𝐷)
lmle.4	⊢ (𝜑 → 𝐷 ∈ (∞Met‘𝑋))
lmle.6	⊢ (𝜑 → 𝑀 ∈ ℤ)
lmle.7	⊢ (𝜑 → 𝐹(⇝𝑡‘𝐽)𝑃)
lmle.8	⊢ (𝜑 → 𝑄 ∈ 𝑋)
lmle.9	⊢ (𝜑 → 𝑅 ∈ ℝ*)
lmle.10	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)

Assertion

Ref	Expression
lmle	⊢ (𝜑 → (𝑄𝐷𝑃) ≤ 𝑅)

Distinct variable groups:   𝐷,𝑘   𝑘,𝐽   𝜑,𝑘   𝑘,𝑍   𝑘,𝐹   𝑃,𝑘   𝑄,𝑘   𝑅,𝑘   𝑘,𝑋

Allowed substitution hint:   𝑀(𝑘)

Proof of Theorem lmle

Dummy variables 𝑗 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		lmle.1	. . . 4 ⊢ 𝑍 = (ℤ≥‘𝑀)
2		lmle.4	. . . . 5 ⊢ (𝜑 → 𝐷 ∈ (∞Met‘𝑋))
3		lmle.3	. . . . . 6 ⊢ 𝐽 = (MetOpen‘𝐷)
4	3	mopntopon 23500	. . . . 5 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝐽 ∈ (TopOn‘𝑋))
5	2, 4	syl 17	. . . 4 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
6		lmle.6	. . . 4 ⊢ (𝜑 → 𝑀 ∈ ℤ)
7		lmrel 22289	. . . . 5 ⊢ Rel (⇝𝑡‘𝐽)
8		lmle.7	. . . . 5 ⊢ (𝜑 → 𝐹(⇝𝑡‘𝐽)𝑃)
9		releldm 5842	. . . . 5 ⊢ ((Rel (⇝𝑡‘𝐽) ∧ 𝐹(⇝𝑡‘𝐽)𝑃) → 𝐹 ∈ dom (⇝𝑡‘𝐽))
10	7, 8, 9	sylancr 586	. . . 4 ⊢ (𝜑 → 𝐹 ∈ dom (⇝𝑡‘𝐽))
11	1, 5, 6, 10	lmff 22360	. . 3 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)
12		eqid 2738	. . . 4 ⊢ (ℤ≥‘𝑗) = (ℤ≥‘𝑗)
13	5	adantr 480	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝐽 ∈ (TopOn‘𝑋))
14		simprl 767	. . . . . 6 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑗 ∈ 𝑍)
15	14, 1	eleqtrdi 2849	. . . . 5 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑗 ∈ (ℤ≥‘𝑀))
16		eluzelz 12521	. . . . 5 ⊢ (𝑗 ∈ (ℤ≥‘𝑀) → 𝑗 ∈ ℤ)
17	15, 16	syl 17	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑗 ∈ ℤ)
18	8	adantr 480	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝐹(⇝𝑡‘𝐽)𝑃)
19		oveq2 7263	. . . . . 6 ⊢ (𝑥 = (𝐹‘𝑘) → (𝑄𝐷𝑥) = (𝑄𝐷(𝐹‘𝑘)))
20	19	breq1d 5080	. . . . 5 ⊢ (𝑥 = (𝐹‘𝑘) → ((𝑄𝐷𝑥) ≤ 𝑅 ↔ (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅))
21		fvres 6775	. . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑗) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) = (𝐹‘𝑘))
22	21	adantl 481	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) = (𝐹‘𝑘))
23		simprr 769	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)
24	23	ffvelrnda 6943	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) ∈ 𝑋)
25	22, 24	eqeltrrd 2840	. . . . 5 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝐹‘𝑘) ∈ 𝑋)
26	1	uztrn2 12530	. . . . . . 7 ⊢ ((𝑗 ∈ 𝑍 ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ 𝑍)
27	14, 26	sylan 579	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ 𝑍)
28		lmle.10	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)
29	28	adantlr 711	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ 𝑍) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)
30	27, 29	syldan 590	. . . . 5 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)
31	20, 25, 30	elrabd 3619	. . . 4 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝐹‘𝑘) ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅})
32		lmle.8	. . . . . 6 ⊢ (𝜑 → 𝑄 ∈ 𝑋)
33		lmle.9	. . . . . 6 ⊢ (𝜑 → 𝑅 ∈ ℝ*)
34		eqid 2738	. . . . . . 7 ⊢ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} = {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅}
35	3, 34	blcld 23567	. . . . . 6 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑄 ∈ 𝑋 ∧ 𝑅 ∈ ℝ*) → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
36	2, 32, 33, 35	syl3anc 1369	. . . . 5 ⊢ (𝜑 → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
37	36	adantr 480	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
38	12, 13, 17, 18, 31, 37	lmcld 22362	. . 3 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅})
39	11, 38	rexlimddv 3219	. 2 ⊢ (𝜑 → 𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅})
40		oveq2 7263	. . . . 5 ⊢ (𝑥 = 𝑃 → (𝑄𝐷𝑥) = (𝑄𝐷𝑃))
41	40	breq1d 5080	. . . 4 ⊢ (𝑥 = 𝑃 → ((𝑄𝐷𝑥) ≤ 𝑅 ↔ (𝑄𝐷𝑃) ≤ 𝑅))
42	41	elrab 3617	. . 3 ⊢ (𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ↔ (𝑃 ∈ 𝑋 ∧ (𝑄𝐷𝑃) ≤ 𝑅))
43	42	simprbi 496	. 2 ⊢ (𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} → (𝑄𝐷𝑃) ≤ 𝑅)
44	39, 43	syl 17	1 ⊢ (𝜑 → (𝑄𝐷𝑃) ≤ 𝑅)

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1539   ∈ wcel 2108  {crab 3067   class class class wbr 5070  dom cdm 5580   ↾ cres 5582  Rel wrel 5585  ⟶wf 6414  ‘cfv 6418  (class class class)co 7255  ℝ^*cxr 10939   ≤ cle 10941  ℤcz 12249  ℤ_≥cuz 12511  ∞Metcxmet 20495  MetOpencmopn 20500  TopOnctopon 21967  Clsdccld 22075  ⇝_𝑡clm 22285

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879  ax-pre-sup 10880

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-nel 3049  df-ral 3068  df-rex 3069  df-reu 3070  df-rmo 3071  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-int 4877  df-iun 4923  df-iin 4924  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-pred 6191  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-1st 7804  df-2nd 7805  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-er 8456  df-map 8575  df-pm 8576  df-en 8692  df-dom 8693  df-sdom 8694  df-sup 9131  df-inf 9132  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-div 11563  df-nn 11904  df-2 11966  df-n0 12164  df-z 12250  df-uz 12512  df-q 12618  df-rp 12660  df-xneg 12777  df-xadd 12778  df-xmul 12779  df-topgen 17071  df-psmet 20502  df-xmet 20503  df-bl 20505  df-mopn 20506  df-top 21951  df-topon 21968  df-bases 22004  df-cld 22078  df-ntr 22079  df-cls 22080  df-lm 22288

This theorem is referenced by:  nglmle  24371  minvecolem4  29143