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| Mirrors > Home > MPE Home > Th. List > limsupcl | Structured version Visualization version GIF version | ||
| Description: Closure of the superior limit. (Contributed by NM, 26-Oct-2005.) (Revised by AV, 12-Sep-2020.) |
| Ref | Expression |
|---|---|
| limsupcl | ⊢ (𝐹 ∈ 𝑉 → (lim sup‘𝐹) ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elex 3472 | . 2 ⊢ (𝐹 ∈ 𝑉 → 𝐹 ∈ V) | |
| 2 | df-limsup 15631 | . . . 4 ⊢ lim sup = (𝑓 ∈ V ↦ inf(ran (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )), ℝ*, < )) | |
| 3 | eqid 2761 | . . . . . . 7 ⊢ (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) = (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) | |
| 4 | inss2 4183 | . . . . . . . 8 ⊢ ((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*) ⊆ ℝ* | |
| 5 | supxrcl 13438 | . . . . . . . 8 ⊢ (((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*) ⊆ ℝ* → sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ ℝ*) | |
| 6 | 4, 5 | mp1i 14 | . . . . . . 7 ⊢ (𝑘 ∈ ℝ → sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ ℝ*) |
| 7 | 3, 6 | fmpti 7110 | . . . . . 6 ⊢ (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )):ℝ⟶ℝ* |
| 8 | frn 6715 | . . . . . 6 ⊢ ((𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )):ℝ⟶ℝ* → ran (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) ⊆ ℝ*) | |
| 9 | 7, 8 | ax-mp 5 | . . . . 5 ⊢ ran (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) ⊆ ℝ* |
| 10 | infxrcl 13457 | . . . . 5 ⊢ (ran (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) ⊆ ℝ* → inf(ran (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )), ℝ*, < ) ∈ ℝ*) | |
| 11 | 9, 10 | mp1i 14 | . . . 4 ⊢ (𝑓 ∈ V → inf(ran (𝑘 ∈ ℝ ↦ sup(((𝑓 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )), ℝ*, < ) ∈ ℝ*) |
| 12 | 2, 11 | fmpti 7110 | . . 3 ⊢ lim sup:V⟶ℝ* |
| 13 | 12 | ffvelcdmi 7081 | . 2 ⊢ (𝐹 ∈ V → (lim sup‘𝐹) ∈ ℝ*) |
| 14 | 1, 13 | syl 18 | 1 ⊢ (𝐹 ∈ 𝑉 → (lim sup‘𝐹) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 Vcvv 3451 ∩ cin 3898 ⊆ wss 3899 ↦ cmpt 5186 ran crn 5652 “ cima 5654 ⟶wf 6533 ‘cfv 6537 (class class class)co 7418 supcsup 9425 infcinf 9426 ℝcr 11192 +∞cpnf 11333 ℝ*cxr 11335 < clt 11336 [,)cico 13471 lim supclsp 15630 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-cnex 11249 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 ax-pre-sup 11271 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 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-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-sup 9427 df-inf 9428 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-limsup 15631 |
| This theorem is used by: limsuplt 15639 limsupbnd1 15642 caucvgrlem 15833 limsupre 46620 limsupcld 46669 limsupcli 46736 limsupval4 46773 liminfreuzlem 46781 |
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