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| Mirrors > Home > MPE Home > Th. List > Mathboxes > xlimconst | Structured version Visualization version GIF version | ||
| Description: A constant sequence converges to its value, w.r.t. the standard topology on the extended reals. (Contributed by Glauco Siliprandi, 5-Feb-2022.) |
| Ref | Expression |
|---|---|
| xlimconst.p | ⊢ Ⅎ𝑘𝜑 |
| xlimconst.k | ⊢ Ⅎ𝑘𝐹 |
| xlimconst.m | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| xlimconst.z | ⊢ 𝑍 = (ℤ≥‘𝑀) |
| xlimconst.f | ⊢ (𝜑 → 𝐹 Fn 𝑍) |
| xlimconst.a | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| xlimconst.e | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = 𝐴) |
| Ref | Expression |
|---|---|
| xlimconst | ⊢ (𝜑 → 𝐹~~>*𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xlimconst.p | . . . 4 ⊢ Ⅎ𝑘𝜑 | |
| 2 | xlimconst.k | . . . 4 ⊢ Ⅎ𝑘𝐹 | |
| 3 | xlimconst.f | . . . 4 ⊢ (𝜑 → 𝐹 Fn 𝑍) | |
| 4 | xlimconst.a | . . . 4 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
| 5 | xlimconst.e | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = 𝐴) | |
| 6 | 1, 2, 3, 4, 5 | fconst7 45265 | . . 3 ⊢ (𝜑 → 𝐹 = (𝑍 × {𝐴})) |
| 7 | letopon 23099 | . . . 4 ⊢ (ordTop‘ ≤ ) ∈ (TopOn‘ℝ*) | |
| 8 | xlimconst.m | . . . 4 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 9 | xlimconst.z | . . . . 5 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
| 10 | 9 | lmconst 23155 | . . . 4 ⊢ (((ordTop‘ ≤ ) ∈ (TopOn‘ℝ*) ∧ 𝐴 ∈ ℝ* ∧ 𝑀 ∈ ℤ) → (𝑍 × {𝐴})(⇝𝑡‘(ordTop‘ ≤ ))𝐴) |
| 11 | 7, 4, 8, 10 | mp3an2i 1468 | . . 3 ⊢ (𝜑 → (𝑍 × {𝐴})(⇝𝑡‘(ordTop‘ ≤ ))𝐴) |
| 12 | 6, 11 | eqbrtrd 5132 | . 2 ⊢ (𝜑 → 𝐹(⇝𝑡‘(ordTop‘ ≤ ))𝐴) |
| 13 | df-xlim 45824 | . . 3 ⊢ ~~>* = (⇝𝑡‘(ordTop‘ ≤ )) | |
| 14 | 13 | breqi 5116 | . 2 ⊢ (𝐹~~>*𝐴 ↔ 𝐹(⇝𝑡‘(ordTop‘ ≤ ))𝐴) |
| 15 | 12, 14 | sylibr 234 | 1 ⊢ (𝜑 → 𝐹~~>*𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 Ⅎwnf 1783 ∈ wcel 2109 Ⅎwnfc 2877 {csn 4592 class class class wbr 5110 × cxp 5639 Fn wfn 6509 ‘cfv 6514 ℝ*cxr 11214 ≤ cle 11216 ℤcz 12536 ℤ≥cuz 12800 ordTopcordt 17469 TopOnctopon 22804 ⇝𝑡clm 23120 ~~>*clsxlim 45823 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-resscn 11132 ax-pre-lttri 11149 ax-pre-lttrn 11150 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-int 4914 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7846 df-1st 7971 df-2nd 7972 df-1o 8437 df-2o 8438 df-er 8674 df-pm 8805 df-en 8922 df-dom 8923 df-sdom 8924 df-fin 8925 df-fi 9369 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-neg 11415 df-z 12537 df-uz 12801 df-topgen 17413 df-ordt 17471 df-ps 18532 df-tsr 18533 df-top 22788 df-topon 22805 df-bases 22840 df-lm 23123 df-xlim 45824 |
| This theorem is referenced by: xlimconst2 45840 |
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