Mathbox for Glauco Siliprandi |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > iooabslt | Structured version Visualization version GIF version |
Description: An upper bound for the distance from the center of an open interval. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
iooabslt.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
iooabslt.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
iooabslt.3 | ⊢ (𝜑 → 𝐶 ∈ ((𝐴 − 𝐵)(,)(𝐴 + 𝐵))) |
Ref | Expression |
---|---|
iooabslt | ⊢ (𝜑 → (abs‘(𝐴 − 𝐶)) < 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iooabslt.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
2 | 1 | recnd 10720 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℂ) |
3 | iooabslt.3 | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ ((𝐴 − 𝐵)(,)(𝐴 + 𝐵))) | |
4 | elioore 12822 | . . . . 5 ⊢ (𝐶 ∈ ((𝐴 − 𝐵)(,)(𝐴 + 𝐵)) → 𝐶 ∈ ℝ) | |
5 | 3, 4 | syl 17 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ ℝ) |
6 | 5 | recnd 10720 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℂ) |
7 | eqid 2758 | . . . 4 ⊢ (abs ∘ − ) = (abs ∘ − ) | |
8 | 7 | cnmetdval 23486 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴(abs ∘ − )𝐶) = (abs‘(𝐴 − 𝐶))) |
9 | 2, 6, 8 | syl2anc 587 | . 2 ⊢ (𝜑 → (𝐴(abs ∘ − )𝐶) = (abs‘(𝐴 − 𝐶))) |
10 | iooabslt.2 | . . . . . . . . 9 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
11 | eqid 2758 | . . . . . . . . . 10 ⊢ ((abs ∘ − ) ↾ (ℝ × ℝ)) = ((abs ∘ − ) ↾ (ℝ × ℝ)) | |
12 | 11 | bl2ioo 23507 | . . . . . . . . 9 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴(ball‘((abs ∘ − ) ↾ (ℝ × ℝ)))𝐵) = ((𝐴 − 𝐵)(,)(𝐴 + 𝐵))) |
13 | 1, 10, 12 | syl2anc 587 | . . . . . . . 8 ⊢ (𝜑 → (𝐴(ball‘((abs ∘ − ) ↾ (ℝ × ℝ)))𝐵) = ((𝐴 − 𝐵)(,)(𝐴 + 𝐵))) |
14 | 3, 13 | eleqtrrd 2855 | . . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ (𝐴(ball‘((abs ∘ − ) ↾ (ℝ × ℝ)))𝐵)) |
15 | cnxmet 23488 | . . . . . . . . 9 ⊢ (abs ∘ − ) ∈ (∞Met‘ℂ) | |
16 | 15 | a1i 11 | . . . . . . . 8 ⊢ (𝜑 → (abs ∘ − ) ∈ (∞Met‘ℂ)) |
17 | 2, 1 | elind 4101 | . . . . . . . 8 ⊢ (𝜑 → 𝐴 ∈ (ℂ ∩ ℝ)) |
18 | 10 | rexrd 10742 | . . . . . . . 8 ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
19 | 11 | blres 23147 | . . . . . . . 8 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝐴 ∈ (ℂ ∩ ℝ) ∧ 𝐵 ∈ ℝ*) → (𝐴(ball‘((abs ∘ − ) ↾ (ℝ × ℝ)))𝐵) = ((𝐴(ball‘(abs ∘ − ))𝐵) ∩ ℝ)) |
20 | 16, 17, 18, 19 | syl3anc 1368 | . . . . . . 7 ⊢ (𝜑 → (𝐴(ball‘((abs ∘ − ) ↾ (ℝ × ℝ)))𝐵) = ((𝐴(ball‘(abs ∘ − ))𝐵) ∩ ℝ)) |
21 | 14, 20 | eleqtrd 2854 | . . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ((𝐴(ball‘(abs ∘ − ))𝐵) ∩ ℝ)) |
22 | elin 3876 | . . . . . 6 ⊢ (𝐶 ∈ ((𝐴(ball‘(abs ∘ − ))𝐵) ∩ ℝ) ↔ (𝐶 ∈ (𝐴(ball‘(abs ∘ − ))𝐵) ∧ 𝐶 ∈ ℝ)) | |
23 | 21, 22 | sylib 221 | . . . . 5 ⊢ (𝜑 → (𝐶 ∈ (𝐴(ball‘(abs ∘ − ))𝐵) ∧ 𝐶 ∈ ℝ)) |
24 | 23 | simpld 498 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ (𝐴(ball‘(abs ∘ − ))𝐵)) |
25 | elbl 23104 | . . . . 5 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝐴 ∈ ℂ ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴(ball‘(abs ∘ − ))𝐵) ↔ (𝐶 ∈ ℂ ∧ (𝐴(abs ∘ − )𝐶) < 𝐵))) | |
26 | 16, 2, 18, 25 | syl3anc 1368 | . . . 4 ⊢ (𝜑 → (𝐶 ∈ (𝐴(ball‘(abs ∘ − ))𝐵) ↔ (𝐶 ∈ ℂ ∧ (𝐴(abs ∘ − )𝐶) < 𝐵))) |
27 | 24, 26 | mpbid 235 | . . 3 ⊢ (𝜑 → (𝐶 ∈ ℂ ∧ (𝐴(abs ∘ − )𝐶) < 𝐵)) |
28 | 27 | simprd 499 | . 2 ⊢ (𝜑 → (𝐴(abs ∘ − )𝐶) < 𝐵) |
29 | 9, 28 | eqbrtrrd 5060 | 1 ⊢ (𝜑 → (abs‘(𝐴 − 𝐶)) < 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∩ cin 3859 class class class wbr 5036 × cxp 5526 ↾ cres 5530 ∘ ccom 5532 ‘cfv 6340 (class class class)co 7156 ℂcc 10586 ℝcr 10587 + caddc 10591 ℝ*cxr 10725 < clt 10726 − cmin 10921 (,)cioo 12792 abscabs 14654 ∞Metcxmet 20165 ballcbl 20167 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-sep 5173 ax-nul 5180 ax-pow 5238 ax-pr 5302 ax-un 7465 ax-cnex 10644 ax-resscn 10645 ax-1cn 10646 ax-icn 10647 ax-addcl 10648 ax-addrcl 10649 ax-mulcl 10650 ax-mulrcl 10651 ax-mulcom 10652 ax-addass 10653 ax-mulass 10654 ax-distr 10655 ax-i2m1 10656 ax-1ne0 10657 ax-1rid 10658 ax-rnegex 10659 ax-rrecex 10660 ax-cnre 10661 ax-pre-lttri 10662 ax-pre-lttrn 10663 ax-pre-ltadd 10664 ax-pre-mulgt0 10665 ax-pre-sup 10666 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3699 df-csb 3808 df-dif 3863 df-un 3865 df-in 3867 df-ss 3877 df-pss 3879 df-nul 4228 df-if 4424 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4802 df-iun 4888 df-br 5037 df-opab 5099 df-mpt 5117 df-tr 5143 df-id 5434 df-eprel 5439 df-po 5447 df-so 5448 df-fr 5487 df-we 5489 df-xp 5534 df-rel 5535 df-cnv 5536 df-co 5537 df-dm 5538 df-rn 5539 df-res 5540 df-ima 5541 df-pred 6131 df-ord 6177 df-on 6178 df-lim 6179 df-suc 6180 df-iota 6299 df-fun 6342 df-fn 6343 df-f 6344 df-f1 6345 df-fo 6346 df-f1o 6347 df-fv 6348 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7586 df-1st 7699 df-2nd 7700 df-wrecs 7963 df-recs 8024 df-rdg 8062 df-er 8305 df-map 8424 df-en 8541 df-dom 8542 df-sdom 8543 df-sup 8952 df-pnf 10728 df-mnf 10729 df-xr 10730 df-ltxr 10731 df-le 10732 df-sub 10923 df-neg 10924 df-div 11349 df-nn 11688 df-2 11750 df-3 11751 df-n0 11948 df-z 12034 df-uz 12296 df-rp 12444 df-xadd 12562 df-ioo 12796 df-seq 13432 df-exp 13493 df-cj 14519 df-re 14520 df-im 14521 df-sqrt 14655 df-abs 14656 df-psmet 20172 df-xmet 20173 df-met 20174 df-bl 20175 |
This theorem is referenced by: lptre2pt 42693 |
Copyright terms: Public domain | W3C validator |