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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > limsupgt | Structured version Visualization version GIF version |
Description: Given a sequence of real numbers, there exists an upper part of the sequence that's appxoximated from below by the superior limit. (Contributed by Glauco Siliprandi, 2-Jan-2022.) |
Ref | Expression |
---|---|
limsupgt.k | ⊢ Ⅎ𝑘𝐹 |
limsupgt.m | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
limsupgt.z | ⊢ 𝑍 = (ℤ≥‘𝑀) |
limsupgt.f | ⊢ (𝜑 → 𝐹:𝑍⟶ℝ) |
limsupgt.r | ⊢ (𝜑 → (lim sup‘𝐹) ∈ ℝ) |
limsupgt.x | ⊢ (𝜑 → 𝑋 ∈ ℝ+) |
Ref | Expression |
---|---|
limsupgt | ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | limsupgt.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
2 | limsupgt.z | . . 3 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
3 | limsupgt.f | . . 3 ⊢ (𝜑 → 𝐹:𝑍⟶ℝ) | |
4 | limsupgt.r | . . 3 ⊢ (𝜑 → (lim sup‘𝐹) ∈ ℝ) | |
5 | limsupgt.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ ℝ+) | |
6 | 1, 2, 3, 4, 5 | limsupgtlem 45165 | . 2 ⊢ (𝜑 → ∃𝑖 ∈ 𝑍 ∀𝑙 ∈ (ℤ≥‘𝑖)((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹)) |
7 | limsupgt.k | . . . . . . . . 9 ⊢ Ⅎ𝑘𝐹 | |
8 | nfcv 2899 | . . . . . . . . 9 ⊢ Ⅎ𝑘𝑙 | |
9 | 7, 8 | nffv 6907 | . . . . . . . 8 ⊢ Ⅎ𝑘(𝐹‘𝑙) |
10 | nfcv 2899 | . . . . . . . 8 ⊢ Ⅎ𝑘 − | |
11 | nfcv 2899 | . . . . . . . 8 ⊢ Ⅎ𝑘𝑋 | |
12 | 9, 10, 11 | nfov 7450 | . . . . . . 7 ⊢ Ⅎ𝑘((𝐹‘𝑙) − 𝑋) |
13 | nfcv 2899 | . . . . . . 7 ⊢ Ⅎ𝑘 < | |
14 | nfcv 2899 | . . . . . . . 8 ⊢ Ⅎ𝑘lim sup | |
15 | 14, 7 | nffv 6907 | . . . . . . 7 ⊢ Ⅎ𝑘(lim sup‘𝐹) |
16 | 12, 13, 15 | nfbr 5195 | . . . . . 6 ⊢ Ⅎ𝑘((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) |
17 | nfv 1910 | . . . . . 6 ⊢ Ⅎ𝑙((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹) | |
18 | fveq2 6897 | . . . . . . . 8 ⊢ (𝑙 = 𝑘 → (𝐹‘𝑙) = (𝐹‘𝑘)) | |
19 | 18 | oveq1d 7435 | . . . . . . 7 ⊢ (𝑙 = 𝑘 → ((𝐹‘𝑙) − 𝑋) = ((𝐹‘𝑘) − 𝑋)) |
20 | 19 | breq1d 5158 | . . . . . 6 ⊢ (𝑙 = 𝑘 → (((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) ↔ ((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹))) |
21 | 16, 17, 20 | cbvralw 3300 | . . . . 5 ⊢ (∀𝑙 ∈ (ℤ≥‘𝑖)((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) ↔ ∀𝑘 ∈ (ℤ≥‘𝑖)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹)) |
22 | 21 | a1i 11 | . . . 4 ⊢ (𝑖 = 𝑗 → (∀𝑙 ∈ (ℤ≥‘𝑖)((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) ↔ ∀𝑘 ∈ (ℤ≥‘𝑖)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹))) |
23 | fveq2 6897 | . . . . 5 ⊢ (𝑖 = 𝑗 → (ℤ≥‘𝑖) = (ℤ≥‘𝑗)) | |
24 | 23 | raleqdv 3322 | . . . 4 ⊢ (𝑖 = 𝑗 → (∀𝑘 ∈ (ℤ≥‘𝑖)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹) ↔ ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹))) |
25 | 22, 24 | bitrd 279 | . . 3 ⊢ (𝑖 = 𝑗 → (∀𝑙 ∈ (ℤ≥‘𝑖)((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) ↔ ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹))) |
26 | 25 | cbvrexvw 3232 | . 2 ⊢ (∃𝑖 ∈ 𝑍 ∀𝑙 ∈ (ℤ≥‘𝑖)((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) ↔ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹)) |
27 | 6, 26 | sylib 217 | 1 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 = wceq 1534 ∈ wcel 2099 Ⅎwnfc 2879 ∀wral 3058 ∃wrex 3067 class class class wbr 5148 ⟶wf 6544 ‘cfv 6548 (class class class)co 7420 ℝcr 11137 < clt 11278 − cmin 11474 ℤcz 12588 ℤ≥cuz 12852 ℝ+crp 13006 lim supclsp 15446 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-cnex 11194 ax-resscn 11195 ax-1cn 11196 ax-icn 11197 ax-addcl 11198 ax-addrcl 11199 ax-mulcl 11200 ax-mulrcl 11201 ax-mulcom 11202 ax-addass 11203 ax-mulass 11204 ax-distr 11205 ax-i2m1 11206 ax-1ne0 11207 ax-1rid 11208 ax-rnegex 11209 ax-rrecex 11210 ax-cnre 11211 ax-pre-lttri 11212 ax-pre-lttrn 11213 ax-pre-ltadd 11214 ax-pre-mulgt0 11215 ax-pre-sup 11216 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7871 df-1st 7993 df-2nd 7994 df-frecs 8286 df-wrecs 8317 df-recs 8391 df-rdg 8430 df-1o 8486 df-er 8724 df-en 8964 df-dom 8965 df-sdom 8966 df-fin 8967 df-sup 9465 df-inf 9466 df-pnf 11280 df-mnf 11281 df-xr 11282 df-ltxr 11283 df-le 11284 df-sub 11476 df-neg 11477 df-div 11902 df-nn 12243 df-2 12305 df-n0 12503 df-z 12589 df-uz 12853 df-rp 13007 df-xadd 13125 df-ico 13362 df-fz 13517 df-fzo 13660 df-fl 13789 df-ceil 13790 df-limsup 15447 |
This theorem is referenced by: liminfltlem 45192 liminflimsupclim 45195 |
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