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Mirrors > Home > MPE Home > Th. List > rlimconst | Structured version Visualization version GIF version |
Description: A constant sequence converges to its value. (Contributed by Mario Carneiro, 16-Sep-2014.) |
Ref | Expression |
---|---|
rlimconst | ⊢ ((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) → (𝑥 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0re 10961 | . . . 4 ⊢ 0 ∈ ℝ | |
2 | simpllr 772 | . . . . . . . . . 10 ⊢ ((((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℂ) | |
3 | 2 | subidd 11303 | . . . . . . . . 9 ⊢ ((((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) ∧ 𝑥 ∈ 𝐴) → (𝐵 − 𝐵) = 0) |
4 | 3 | fveq2d 6772 | . . . . . . . 8 ⊢ ((((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) ∧ 𝑥 ∈ 𝐴) → (abs‘(𝐵 − 𝐵)) = (abs‘0)) |
5 | abs0 14978 | . . . . . . . 8 ⊢ (abs‘0) = 0 | |
6 | 4, 5 | eqtrdi 2795 | . . . . . . 7 ⊢ ((((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) ∧ 𝑥 ∈ 𝐴) → (abs‘(𝐵 − 𝐵)) = 0) |
7 | rpgt0 12724 | . . . . . . . 8 ⊢ (𝑦 ∈ ℝ+ → 0 < 𝑦) | |
8 | 7 | ad2antlr 723 | . . . . . . 7 ⊢ ((((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) ∧ 𝑥 ∈ 𝐴) → 0 < 𝑦) |
9 | 6, 8 | eqbrtrd 5100 | . . . . . 6 ⊢ ((((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) ∧ 𝑥 ∈ 𝐴) → (abs‘(𝐵 − 𝐵)) < 𝑦) |
10 | 9 | a1d 25 | . . . . 5 ⊢ ((((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) ∧ 𝑥 ∈ 𝐴) → (0 ≤ 𝑥 → (abs‘(𝐵 − 𝐵)) < 𝑦)) |
11 | 10 | ralrimiva 3109 | . . . 4 ⊢ (((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) → ∀𝑥 ∈ 𝐴 (0 ≤ 𝑥 → (abs‘(𝐵 − 𝐵)) < 𝑦)) |
12 | breq1 5081 | . . . . 5 ⊢ (𝑧 = 0 → (𝑧 ≤ 𝑥 ↔ 0 ≤ 𝑥)) | |
13 | 12 | rspceaimv 3565 | . . . 4 ⊢ ((0 ∈ ℝ ∧ ∀𝑥 ∈ 𝐴 (0 ≤ 𝑥 → (abs‘(𝐵 − 𝐵)) < 𝑦)) → ∃𝑧 ∈ ℝ ∀𝑥 ∈ 𝐴 (𝑧 ≤ 𝑥 → (abs‘(𝐵 − 𝐵)) < 𝑦)) |
14 | 1, 11, 13 | sylancr 586 | . . 3 ⊢ (((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑦 ∈ ℝ+) → ∃𝑧 ∈ ℝ ∀𝑥 ∈ 𝐴 (𝑧 ≤ 𝑥 → (abs‘(𝐵 − 𝐵)) < 𝑦)) |
15 | 14 | ralrimiva 3109 | . 2 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) → ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ ∀𝑥 ∈ 𝐴 (𝑧 ≤ 𝑥 → (abs‘(𝐵 − 𝐵)) < 𝑦)) |
16 | simplr 765 | . . . 4 ⊢ (((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℂ) | |
17 | 16 | ralrimiva 3109 | . . 3 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) → ∀𝑥 ∈ 𝐴 𝐵 ∈ ℂ) |
18 | simpl 482 | . . 3 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) → 𝐴 ⊆ ℝ) | |
19 | simpr 484 | . . 3 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) → 𝐵 ∈ ℂ) | |
20 | 17, 18, 19 | rlim2 15186 | . 2 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) → ((𝑥 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐵 ↔ ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ ∀𝑥 ∈ 𝐴 (𝑧 ≤ 𝑥 → (abs‘(𝐵 − 𝐵)) < 𝑦))) |
21 | 15, 20 | mpbird 256 | 1 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐵 ∈ ℂ) → (𝑥 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2109 ∀wral 3065 ∃wrex 3066 ⊆ wss 3891 class class class wbr 5078 ↦ cmpt 5161 ‘cfv 6430 (class class class)co 7268 ℂcc 10853 ℝcr 10854 0cc0 10855 < clt 10993 ≤ cle 10994 − cmin 11188 ℝ+crp 12712 abscabs 14926 ⇝𝑟 crli 15175 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-cnex 10911 ax-resscn 10912 ax-1cn 10913 ax-icn 10914 ax-addcl 10915 ax-addrcl 10916 ax-mulcl 10917 ax-mulrcl 10918 ax-mulcom 10919 ax-addass 10920 ax-mulass 10921 ax-distr 10922 ax-i2m1 10923 ax-1ne0 10924 ax-1rid 10925 ax-rnegex 10926 ax-rrecex 10927 ax-cnre 10928 ax-pre-lttri 10929 ax-pre-lttrn 10930 ax-pre-ltadd 10931 ax-pre-mulgt0 10932 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-reu 3072 df-rmo 3073 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-pss 3910 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-tr 5196 df-id 5488 df-eprel 5494 df-po 5502 df-so 5503 df-fr 5543 df-we 5545 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-pred 6199 df-ord 6266 df-on 6267 df-lim 6268 df-suc 6269 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-riota 7225 df-ov 7271 df-oprab 7272 df-mpo 7273 df-om 7701 df-2nd 7818 df-frecs 8081 df-wrecs 8112 df-recs 8186 df-rdg 8225 df-er 8472 df-pm 8592 df-en 8708 df-dom 8709 df-sdom 8710 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 df-le 10999 df-sub 11190 df-neg 11191 df-div 11616 df-nn 11957 df-2 12019 df-n0 12217 df-z 12303 df-uz 12565 df-rp 12713 df-seq 13703 df-exp 13764 df-cj 14791 df-re 14792 df-im 14793 df-sqrt 14927 df-abs 14928 df-rlim 15179 |
This theorem is referenced by: o1const 15310 rlimneg 15339 caucvgr 15368 fsumrlim 15504 dvfsumrlimge0 25175 dvfsumrlim2 25177 logexprlim 26354 chebbnd2 26606 chto1lb 26607 chpchtlim 26608 dchrisum0lem1 26645 selberglem2 26675 signsplypnf 32508 |
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