Theorem lmle 23906

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 23051	. . . . 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 21840	. . . . 5 ⊢ Rel (⇝𝑡‘𝐽)
8		lmle.7	. . . . 5 ⊢ (𝜑 → 𝐹(⇝𝑡‘𝐽)𝑃)
9		releldm 5816	. . . . 5 ⊢ ((Rel (⇝𝑡‘𝐽) ∧ 𝐹(⇝𝑡‘𝐽)𝑃) → 𝐹 ∈ dom (⇝𝑡‘𝐽))
10	7, 8, 9	sylancr 589	. . . 4 ⊢ (𝜑 → 𝐹 ∈ dom (⇝𝑡‘𝐽))
11	1, 5, 6, 10	lmff 21911	. . 3 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)
12		eqid 2823	. . . 4 ⊢ (ℤ≥‘𝑗) = (ℤ≥‘𝑗)
13	5	adantr 483	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝐽 ∈ (TopOn‘𝑋))
14		simprl 769	. . . . . 6 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑗 ∈ 𝑍)
15	14, 1	eleqtrdi 2925	. . . . 5 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑗 ∈ (ℤ≥‘𝑀))
16		eluzelz 12256	. . . . 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 483	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝐹(⇝𝑡‘𝐽)𝑃)
19		oveq2 7166	. . . . . 6 ⊢ (𝑥 = (𝐹‘𝑘) → (𝑄𝐷𝑥) = (𝑄𝐷(𝐹‘𝑘)))
20	19	breq1d 5078	. . . . 5 ⊢ (𝑥 = (𝐹‘𝑘) → ((𝑄𝐷𝑥) ≤ 𝑅 ↔ (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅))
21		fvres 6691	. . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑗) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) = (𝐹‘𝑘))
22	21	adantl 484	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) = (𝐹‘𝑘))
23		simprr 771	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)
24	23	ffvelrnda 6853	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) ∈ 𝑋)
25	22, 24	eqeltrrd 2916	. . . . 5 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝐹‘𝑘) ∈ 𝑋)
26	1	uztrn2 12265	. . . . . . 7 ⊢ ((𝑗 ∈ 𝑍 ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ 𝑍)
27	14, 26	sylan 582	. . . . . 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 713	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ 𝑍) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)
30	27, 29	syldan 593	. . . . 5 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)
31	20, 25, 30	elrabd 3684	. . . 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 2823	. . . . . . 7 ⊢ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} = {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅}
35	3, 34	blcld 23117	. . . . . 6 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑄 ∈ 𝑋 ∧ 𝑅 ∈ ℝ*) → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
36	2, 32, 33, 35	syl3anc 1367	. . . . 5 ⊢ (𝜑 → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
37	36	adantr 483	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
38	12, 13, 17, 18, 31, 37	lmcld 21913	. . 3 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅})
39	11, 38	rexlimddv 3293	. 2 ⊢ (𝜑 → 𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅})
40		oveq2 7166	. . . . 5 ⊢ (𝑥 = 𝑃 → (𝑄𝐷𝑥) = (𝑄𝐷𝑃))
41	40	breq1d 5078	. . . 4 ⊢ (𝑥 = 𝑃 → ((𝑄𝐷𝑥) ≤ 𝑅 ↔ (𝑄𝐷𝑃) ≤ 𝑅))
42	41	elrab 3682	. . 3 ⊢ (𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ↔ (𝑃 ∈ 𝑋 ∧ (𝑄𝐷𝑃) ≤ 𝑅))
43	42	simprbi 499	. 2 ⊢ (𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} → (𝑄𝐷𝑃) ≤ 𝑅)
44	39, 43	syl 17	1 ⊢ (𝜑 → (𝑄𝐷𝑃) ≤ 𝑅)

Syntax hints:   → wi 4   ∧ wa 398   = wceq 1537   ∈ wcel 2114  {crab 3144   class class class wbr 5068  dom cdm 5557   ↾ cres 5559  Rel wrel 5562  ⟶wf 6353  ‘cfv 6357  (class class class)co 7158  ℝ^*cxr 10676   ≤ cle 10678  ℤcz 11984  ℤ_≥cuz 12246  ∞Metcxmet 20532  MetOpencmopn 20537  TopOnctopon 21520  Clsdccld 21626  ⇝_𝑡clm 21836

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-rep 5192  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463  ax-cnex 10595  ax-resscn 10596  ax-1cn 10597  ax-icn 10598  ax-addcl 10599  ax-addrcl 10600  ax-mulcl 10601  ax-mulrcl 10602  ax-mulcom 10603  ax-addass 10604  ax-mulass 10605  ax-distr 10606  ax-i2m1 10607  ax-1ne0 10608  ax-1rid 10609  ax-rnegex 10610  ax-rrecex 10611  ax-cnre 10612  ax-pre-lttri 10613  ax-pre-lttrn 10614  ax-pre-ltadd 10615  ax-pre-mulgt0 10616  ax-pre-sup 10617

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-nel 3126  df-ral 3145  df-rex 3146  df-reu 3147  df-rmo 3148  df-rab 3149  df-v 3498  df-sbc 3775  df-csb 3886  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-pss 3956  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-tp 4574  df-op 4576  df-uni 4841  df-int 4879  df-iun 4923  df-iin 4924  df-br 5069  df-opab 5131  df-mpt 5149  df-tr 5175  df-id 5462  df-eprel 5467  df-po 5476  df-so 5477  df-fr 5516  df-we 5518  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-pred 6150  df-ord 6196  df-on 6197  df-lim 6198  df-suc 6199  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-f1 6362  df-fo 6363  df-f1o 6364  df-fv 6365  df-riota 7116  df-ov 7161  df-oprab 7162  df-mpo 7163  df-om 7583  df-1st 7691  df-2nd 7692  df-wrecs 7949  df-recs 8010  df-rdg 8048  df-er 8291  df-map 8410  df-pm 8411  df-en 8512  df-dom 8513  df-sdom 8514  df-sup 8908  df-inf 8909  df-pnf 10679  df-mnf 10680  df-xr 10681  df-ltxr 10682  df-le 10683  df-sub 10874  df-neg 10875  df-div 11300  df-nn 11641  df-2 11703  df-n0 11901  df-z 11985  df-uz 12247  df-q 12352  df-rp 12393  df-xneg 12510  df-xadd 12511  df-xmul 12512  df-topgen 16719  df-psmet 20539  df-xmet 20540  df-bl 20542  df-mopn 20543  df-top 21504  df-topon 21521  df-bases 21556  df-cld 21629  df-ntr 21630  df-cls 21631  df-lm 21839

This theorem is referenced by:  nglmle  23907  minvecolem4  28659