| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > liminfcl | Structured version Visualization version GIF version | ||
| Description: Closure of the inferior limit. (Contributed by Glauco Siliprandi, 2-Jan-2022.) |
| Ref | Expression |
|---|---|
| liminfcl | ⊢ (𝐹 ∈ 𝑉 → (lim inf‘𝐹) ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2763 | . . 3 ⊢ (𝑘 ∈ ℝ ↦ inf(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) = (𝑘 ∈ ℝ ↦ inf(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) | |
| 2 | 1 | liminfval 46334 | . 2 ⊢ (𝐹 ∈ 𝑉 → (lim inf‘𝐹) = sup(ran (𝑘 ∈ ℝ ↦ inf(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )), ℝ*, < )) |
| 3 | nfv 1935 | . . . 4 ⊢ Ⅎ𝑘 𝐹 ∈ 𝑉 | |
| 4 | inss2 4190 | . . . . . 6 ⊢ ((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*) ⊆ ℝ* | |
| 5 | infxrcl 13338 | . . . . . 6 ⊢ (((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*) ⊆ ℝ* → inf(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ ℝ*) | |
| 6 | 4, 5 | ax-mp 5 | . . . . 5 ⊢ inf(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ ℝ* |
| 7 | 6 | a1i 11 | . . . 4 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑘 ∈ ℝ) → inf(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ ℝ*) |
| 8 | 3, 1, 7 | rnmptssd 7106 | . . 3 ⊢ (𝐹 ∈ 𝑉 → ran (𝑘 ∈ ℝ ↦ inf(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) ⊆ ℝ*) |
| 9 | 8 | supxrcld 45686 | . 2 ⊢ (𝐹 ∈ 𝑉 → sup(ran (𝑘 ∈ ℝ ↦ inf(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )), ℝ*, < ) ∈ ℝ*) |
| 10 | 2, 9 | eqeltrd 2863 | 1 ⊢ (𝐹 ∈ 𝑉 → (lim inf‘𝐹) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 ∈ wcel 2143 ∩ cin 3904 ⊆ wss 3905 ↦ cmpt 5182 ran crn 5649 “ cima 5651 ‘cfv 6522 (class class class)co 7397 supcsup 9387 infcinf 9388 ℝcr 11073 +∞cpnf 11214 ℝ*cxr 11216 < clt 11217 [,)cico 13352 lim infclsi 46326 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7719 ax-cnex 11130 ax-resscn 11131 ax-1cn 11132 ax-icn 11133 ax-addcl 11134 ax-addrcl 11135 ax-mulcl 11136 ax-mulrcl 11137 ax-mulcom 11138 ax-addass 11139 ax-mulass 11140 ax-distr 11141 ax-i2m1 11142 ax-1ne0 11143 ax-1rid 11144 ax-rnegex 11145 ax-rrecex 11146 ax-cnre 11147 ax-pre-lttri 11148 ax-pre-lttrn 11149 ax-pre-ltadd 11150 ax-pre-mulgt0 11151 ax-pre-sup 11152 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5102 df-opab 5164 df-mpt 5183 df-id 5543 df-po 5556 df-so 5557 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-iota 6478 df-fun 6524 df-fn 6525 df-f 6526 df-f1 6527 df-fo 6528 df-f1o 6529 df-fv 6530 df-riota 7354 df-ov 7400 df-oprab 7401 df-mpo 7402 df-er 8679 df-en 8929 df-dom 8930 df-sdom 8931 df-sup 9389 df-inf 9390 df-pnf 11219 df-mnf 11220 df-xr 11221 df-ltxr 11222 df-le 11223 df-sub 11417 df-neg 11418 df-liminf 46327 |
| This theorem is referenced by: liminfcld 46345 climliminflimsupd 46376 |
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