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| Mirrors > Home > MPE Home > Th. List > Mathboxes > liminfvaluz3 | Structured version Visualization version GIF version | ||
| Description: Alternate definition of lim inf for an extended real-valued function, defined on a set of upper integers. (Contributed by Glauco Siliprandi, 2-Jan-2022.) |
| Ref | Expression |
|---|---|
| liminfvaluz3.1 | ⊢ Ⅎ𝑘𝜑 |
| liminfvaluz3.2 | ⊢ Ⅎ𝑘𝐹 |
| liminfvaluz3.3 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| liminfvaluz3.4 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
| liminfvaluz3.5 | ⊢ (𝜑 → 𝐹:𝑍⟶ℝ*) |
| Ref | Expression |
|---|---|
| liminfvaluz3 | ⊢ (𝜑 → (lim inf‘𝐹) = -𝑒(lim sup‘(𝑘 ∈ 𝑍 ↦ -𝑒(𝐹‘𝑘)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfcv 2931 | . . . 4 ⊢ Ⅎ𝑘𝑍 | |
| 2 | liminfvaluz3.2 | . . . 4 ⊢ Ⅎ𝑘𝐹 | |
| 3 | liminfvaluz3.5 | . . . 4 ⊢ (𝜑 → 𝐹:𝑍⟶ℝ*) | |
| 4 | 1, 2, 3 | feqmptdf 6952 | . . 3 ⊢ (𝜑 → 𝐹 = (𝑘 ∈ 𝑍 ↦ (𝐹‘𝑘))) |
| 5 | 4 | fveq2d 6886 | . 2 ⊢ (𝜑 → (lim inf‘𝐹) = (lim inf‘(𝑘 ∈ 𝑍 ↦ (𝐹‘𝑘)))) |
| 6 | liminfvaluz3.1 | . . 3 ⊢ Ⅎ𝑘𝜑 | |
| 7 | liminfvaluz3.3 | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 8 | liminfvaluz3.4 | . . 3 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
| 9 | 3 | ffvelcdmda 7080 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℝ*) |
| 10 | 6, 7, 8, 9 | liminfvaluz 46397 | . 2 ⊢ (𝜑 → (lim inf‘(𝑘 ∈ 𝑍 ↦ (𝐹‘𝑘))) = -𝑒(lim sup‘(𝑘 ∈ 𝑍 ↦ -𝑒(𝐹‘𝑘)))) |
| 11 | 5, 10 | eqtrd 2804 | 1 ⊢ (𝜑 → (lim inf‘𝐹) = -𝑒(lim sup‘(𝑘 ∈ 𝑍 ↦ -𝑒(𝐹‘𝑘)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1567 Ⅎwnf 1810 ∈ wcel 2149 Ⅎwnfc 2916 ↦ cmpt 5196 ⟶wf 6533 ‘cfv 6537 ℝ*cxr 11241 ℤcz 12590 ℤ≥cuz 12861 -𝑒cxne 13133 lim supclsp 15520 lim infclsi 46356 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5242 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11155 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 ax-pre-sup 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-isom 6546 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7862 df-1st 7985 df-2nd 7986 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-sup 9401 df-inf 9402 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 df-div 11871 df-nn 12233 df-n0 12504 df-z 12591 df-uz 12862 df-q 12972 df-xneg 13136 df-ico 13377 df-limsup 15521 df-liminf 46357 |
| This theorem is referenced by: liminflbuz2 46420 liminfpnfuz 46421 |
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