Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > rlimabs | Structured version Visualization version GIF version |
Description: Limit of the absolute value of a sequence. Proposition 12-2.4(c) of [Gleason] p. 172. (Contributed by Mario Carneiro, 10-May-2016.) |
Ref | Expression |
---|---|
rlimabs.1 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ 𝑉) |
rlimabs.2 | ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐶) |
Ref | Expression |
---|---|
rlimabs | ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ (abs‘𝐵)) ⇝𝑟 (abs‘𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rlimabs.1 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ 𝑉) | |
2 | rlimabs.2 | . . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐶) | |
3 | 1, 2 | rlimmptrcl 15197 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) |
4 | rlimcl 15092 | . . 3 ⊢ ((𝑘 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐶 → 𝐶 ∈ ℂ) | |
5 | 2, 4 | syl 17 | . 2 ⊢ (𝜑 → 𝐶 ∈ ℂ) |
6 | absf 14929 | . . . 4 ⊢ abs:ℂ⟶ℝ | |
7 | ax-resscn 10811 | . . . 4 ⊢ ℝ ⊆ ℂ | |
8 | fss 6581 | . . . 4 ⊢ ((abs:ℂ⟶ℝ ∧ ℝ ⊆ ℂ) → abs:ℂ⟶ℂ) | |
9 | 6, 7, 8 | mp2an 692 | . . 3 ⊢ abs:ℂ⟶ℂ |
10 | 9 | a1i 11 | . 2 ⊢ (𝜑 → abs:ℂ⟶ℂ) |
11 | abscn2 15188 | . . 3 ⊢ ((𝐶 ∈ ℂ ∧ 𝑥 ∈ ℝ+) → ∃𝑦 ∈ ℝ+ ∀𝑧 ∈ ℂ ((abs‘(𝑧 − 𝐶)) < 𝑦 → (abs‘((abs‘𝑧) − (abs‘𝐶))) < 𝑥)) | |
12 | 5, 11 | sylan 583 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ ℝ+) → ∃𝑦 ∈ ℝ+ ∀𝑧 ∈ ℂ ((abs‘(𝑧 − 𝐶)) < 𝑦 → (abs‘((abs‘𝑧) − (abs‘𝐶))) < 𝑥)) |
13 | 3, 5, 2, 10, 12 | rlimcn1b 15178 | 1 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ (abs‘𝐵)) ⇝𝑟 (abs‘𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 ∈ wcel 2111 ∀wral 3062 ∃wrex 3063 ⊆ wss 3881 class class class wbr 5068 ↦ cmpt 5150 ⟶wf 6394 ‘cfv 6398 (class class class)co 7232 ℂcc 10752 ℝcr 10753 < clt 10892 − cmin 11087 ℝ+crp 12611 abscabs 14825 ⇝𝑟 crli 15074 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2159 ax-12 2176 ax-ext 2709 ax-sep 5207 ax-nul 5214 ax-pow 5273 ax-pr 5337 ax-un 7542 ax-cnex 10810 ax-resscn 10811 ax-1cn 10812 ax-icn 10813 ax-addcl 10814 ax-addrcl 10815 ax-mulcl 10816 ax-mulrcl 10817 ax-mulcom 10818 ax-addass 10819 ax-mulass 10820 ax-distr 10821 ax-i2m1 10822 ax-1ne0 10823 ax-1rid 10824 ax-rnegex 10825 ax-rrecex 10826 ax-cnre 10827 ax-pre-lttri 10828 ax-pre-lttrn 10829 ax-pre-ltadd 10830 ax-pre-mulgt0 10831 ax-pre-sup 10832 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2072 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3067 df-rex 3068 df-reu 3069 df-rmo 3070 df-rab 3071 df-v 3423 df-sbc 3710 df-csb 3827 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4253 df-if 4455 df-pw 4530 df-sn 4557 df-pr 4559 df-tp 4561 df-op 4563 df-uni 4835 df-iun 4921 df-br 5069 df-opab 5131 df-mpt 5151 df-tr 5177 df-id 5470 df-eprel 5475 df-po 5483 df-so 5484 df-fr 5524 df-we 5526 df-xp 5572 df-rel 5573 df-cnv 5574 df-co 5575 df-dm 5576 df-rn 5577 df-res 5578 df-ima 5579 df-pred 6176 df-ord 6234 df-on 6235 df-lim 6236 df-suc 6237 df-iota 6356 df-fun 6400 df-fn 6401 df-f 6402 df-f1 6403 df-fo 6404 df-f1o 6405 df-fv 6406 df-riota 7189 df-ov 7235 df-oprab 7236 df-mpo 7237 df-om 7664 df-2nd 7781 df-wrecs 8068 df-recs 8129 df-rdg 8167 df-er 8412 df-pm 8532 df-en 8648 df-dom 8649 df-sdom 8650 df-sup 9083 df-pnf 10894 df-mnf 10895 df-xr 10896 df-ltxr 10897 df-le 10898 df-sub 11089 df-neg 11090 df-div 11515 df-nn 11856 df-2 11918 df-3 11919 df-n0 12116 df-z 12202 df-uz 12464 df-rp 12612 df-seq 13602 df-exp 13663 df-cj 14690 df-re 14691 df-im 14692 df-sqrt 14826 df-abs 14827 df-rlim 15078 |
This theorem is referenced by: dvfsumrlim2 24956 |
Copyright terms: Public domain | W3C validator |