Theorem lmle 22907

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 22054	. . . . 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 20844	. . . . 5 ⊢ Rel (⇝𝑡‘𝐽)
8		lmle.7	. . . . 5 ⊢ (𝜑 → 𝐹(⇝𝑡‘𝐽)𝑃)
9		releldm 5279	. . . . 5 ⊢ ((Rel (⇝𝑡‘𝐽) ∧ 𝐹(⇝𝑡‘𝐽)𝑃) → 𝐹 ∈ dom (⇝𝑡‘𝐽))
10	7, 8, 9	sylancr 694	. . . 4 ⊢ (𝜑 → 𝐹 ∈ dom (⇝𝑡‘𝐽))
11	1, 5, 6, 10	lmff 20915	. . 3 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)
12		eqid 2610	. . . 4 ⊢ (ℤ≥‘𝑗) = (ℤ≥‘𝑗)
13	5	adantr 480	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝐽 ∈ (TopOn‘𝑋))
14		simprl 790	. . . . . 6 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑗 ∈ 𝑍)
15	14, 1	syl6eleq 2698	. . . . 5 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑗 ∈ (ℤ≥‘𝑀))
16		eluzelz 11573	. . . . 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		fvres 6117	. . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑗) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) = (𝐹‘𝑘))
20	19	adantl 481	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) = (𝐹‘𝑘))
21		simprr 792	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)
22	21	ffvelrnda 6267	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝐹 ↾ (ℤ≥‘𝑗))‘𝑘) ∈ 𝑋)
23	20, 22	eqeltrrd 2689	. . . . 5 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝐹‘𝑘) ∈ 𝑋)
24	1	uztrn2 11581	. . . . . . 7 ⊢ ((𝑗 ∈ 𝑍 ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ 𝑍)
25	14, 24	sylan 487	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ 𝑍)
26		lmle.10	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)
27	26	adantlr 747	. . . . . 6 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ 𝑍) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)
28	25, 27	syldan 486	. . . . 5 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅)
29		oveq2 6557	. . . . . . 7 ⊢ (𝑥 = (𝐹‘𝑘) → (𝑄𝐷𝑥) = (𝑄𝐷(𝐹‘𝑘)))
30	29	breq1d 4593	. . . . . 6 ⊢ (𝑥 = (𝐹‘𝑘) → ((𝑄𝐷𝑥) ≤ 𝑅 ↔ (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅))
31	30	elrab 3331	. . . . 5 ⊢ ((𝐹‘𝑘) ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ↔ ((𝐹‘𝑘) ∈ 𝑋 ∧ (𝑄𝐷(𝐹‘𝑘)) ≤ 𝑅))
32	23, 28, 31	sylanbrc 695	. . . 4 ⊢ (((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝐹‘𝑘) ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅})
33		lmle.8	. . . . . 6 ⊢ (𝜑 → 𝑄 ∈ 𝑋)
34		lmle.9	. . . . . 6 ⊢ (𝜑 → 𝑅 ∈ ℝ*)
35		eqid 2610	. . . . . . 7 ⊢ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} = {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅}
36	3, 35	blcld 22120	. . . . . 6 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑄 ∈ 𝑋 ∧ 𝑅 ∈ ℝ*) → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
37	2, 33, 34, 36	syl3anc 1318	. . . . 5 ⊢ (𝜑 → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
38	37	adantr 480	. . . 4 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ∈ (Clsd‘𝐽))
39	12, 13, 17, 18, 32, 38	lmcld 20917	. . 3 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝑍 ∧ (𝐹 ↾ (ℤ≥‘𝑗)):(ℤ≥‘𝑗)⟶𝑋)) → 𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅})
40	11, 39	rexlimddv 3017	. 2 ⊢ (𝜑 → 𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅})
41		oveq2 6557	. . . . 5 ⊢ (𝑥 = 𝑃 → (𝑄𝐷𝑥) = (𝑄𝐷𝑃))
42	41	breq1d 4593	. . . 4 ⊢ (𝑥 = 𝑃 → ((𝑄𝐷𝑥) ≤ 𝑅 ↔ (𝑄𝐷𝑃) ≤ 𝑅))
43	42	elrab 3331	. . 3 ⊢ (𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} ↔ (𝑃 ∈ 𝑋 ∧ (𝑄𝐷𝑃) ≤ 𝑅))
44	43	simprbi 479	. 2 ⊢ (𝑃 ∈ {𝑥 ∈ 𝑋 ∣ (𝑄𝐷𝑥) ≤ 𝑅} → (𝑄𝐷𝑃) ≤ 𝑅)
45	40, 44	syl 17	1 ⊢ (𝜑 → (𝑄𝐷𝑃) ≤ 𝑅)

Syntax hints:   → wi 4   ∧ wa 383   = wceq 1475   ∈ wcel 1977  {crab 2900   class class class wbr 4583  dom cdm 5038   ↾ cres 5040  Rel wrel 5043  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  ℝ^*cxr 9952   ≤ cle 9954  ℤcz 11254  ℤ_≥cuz 11563  ∞Metcxmt 19552  MetOpencmopn 19557  TopOnctopon 20518  Clsdccld 20630  ⇝_𝑡clm 20840

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-iin 4458  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-er 7629  df-map 7746  df-pm 7747  df-en 7842  df-dom 7843  df-sdom 7844  df-sup 8231  df-inf 8232  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-n0 11170  df-z 11255  df-uz 11564  df-q 11665  df-rp 11709  df-xneg 11822  df-xadd 11823  df-xmul 11824  df-topgen 15927  df-psmet 19559  df-xmet 19560  df-bl 19562  df-mopn 19563  df-top 20521  df-bases 20522  df-topon 20523  df-cld 20633  df-ntr 20634  df-cls 20635  df-lm 20843

This theorem is referenced by:  nglmle  22908  minvecolem4  27120