| 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 46549 | . 2 ⊢ (𝜑 → ∃𝑖 ∈ 𝑍 ∀𝑙 ∈ (ℤ≥‘𝑖)((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹)) |
| 7 | limsupgt.k | . . . . . . . . 9 ⊢ Ⅎ𝑘𝐹 | |
| 8 | nfcv 2927 | . . . . . . . . 9 ⊢ Ⅎ𝑘𝑙 | |
| 9 | 7, 8 | nffv 6895 | . . . . . . . 8 ⊢ Ⅎ𝑘(𝐹‘𝑙) |
| 10 | nfcv 2927 | . . . . . . . 8 ⊢ Ⅎ𝑘 − | |
| 11 | nfcv 2927 | . . . . . . . 8 ⊢ Ⅎ𝑘𝑋 | |
| 12 | 9, 10, 11 | nfov 7449 | . . . . . . 7 ⊢ Ⅎ𝑘((𝐹‘𝑙) − 𝑋) |
| 13 | nfcv 2927 | . . . . . . 7 ⊢ Ⅎ𝑘 < | |
| 14 | nfcv 2927 | . . . . . . . 8 ⊢ Ⅎ𝑘lim sup | |
| 15 | 14, 7 | nffv 6895 | . . . . . . 7 ⊢ Ⅎ𝑘(lim sup‘𝐹) |
| 16 | 12, 13, 15 | nfbr 5160 | . . . . . 6 ⊢ Ⅎ𝑘((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) |
| 17 | nfv 1947 | . . . . . 6 ⊢ Ⅎ𝑙((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹) | |
| 18 | fveq2 6885 | . . . . . . . 8 ⊢ (𝑙 = 𝑘 → (𝐹‘𝑙) = (𝐹‘𝑘)) | |
| 19 | 18 | oveq1d 7434 | . . . . . . 7 ⊢ (𝑙 = 𝑘 → ((𝐹‘𝑙) − 𝑋) = ((𝐹‘𝑘) − 𝑋)) |
| 20 | 19 | breq1d 5121 | . . . . . 6 ⊢ (𝑙 = 𝑘 → (((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) ↔ ((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹))) |
| 21 | 16, 17, 20 | cbvralw 3309 | . . . . 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 6885 | . . . . 5 ⊢ (𝑖 = 𝑗 → (ℤ≥‘𝑖) = (ℤ≥‘𝑗)) | |
| 24 | 23 | raleqdv 3325 | . . . 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 282 | . . 3 ⊢ (𝑖 = 𝑗 → (∀𝑙 ∈ (ℤ≥‘𝑖)((𝐹‘𝑙) − 𝑋) < (lim sup‘𝐹) ↔ ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹))) |
| 26 | 25 | cbvrexvw 3246 | . 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 221 | 1 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) − 𝑋) < (lim sup‘𝐹)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1570 ∈ wcel 2146 Ⅎwnfc 2912 ∀wral 3081 ∃wrex 3091 class class class wbr 5111 ⟶wf 6536 ‘cfv 6540 (class class class)co 7419 ℝcr 11114 < clt 11258 − cmin 11456 ℤcz 12606 ℤ≥cuz 12878 ℝ+crp 13032 lim supclsp 15545 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-cnex 11171 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-addrcl 11176 ax-mulcl 11177 ax-mulrcl 11178 ax-mulcom 11179 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-i2m1 11183 ax-1ne0 11184 ax-1rid 11185 ax-rnegex 11186 ax-rrecex 11187 ax-cnre 11188 ax-pre-lttri 11189 ax-pre-lttrn 11190 ax-pre-ltadd 11191 ax-pre-mulgt0 11192 ax-pre-sup 11193 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7869 df-1st 7992 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-1o 8459 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-fin 8953 df-sup 9409 df-inf 9410 df-pnf 11260 df-mnf 11261 df-xr 11262 df-ltxr 11263 df-le 11264 df-sub 11458 df-neg 11459 df-div 11887 df-nn 12249 df-2 12318 df-n0 12520 df-z 12607 df-uz 12879 df-rp 13033 df-xadd 13154 df-ico 13394 df-fz 13552 df-fzo 13700 df-fl 13843 df-ceil 13844 df-limsup 15546 |
| This theorem is used by: liminfltlem 46576 liminflimsupclim 46579 |
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