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Mirrors > Home > MPE Home > Th. List > elioo2 | Structured version Visualization version GIF version |
Description: Membership in an open interval of extended reals. (Contributed by NM, 6-Feb-2007.) |
Ref | Expression |
---|---|
elioo2 | ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴(,)𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iooval2 12759 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴(,)𝐵) = {𝑥 ∈ ℝ ∣ (𝐴 < 𝑥 ∧ 𝑥 < 𝐵)}) | |
2 | 1 | eleq2d 2875 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴(,)𝐵) ↔ 𝐶 ∈ {𝑥 ∈ ℝ ∣ (𝐴 < 𝑥 ∧ 𝑥 < 𝐵)})) |
3 | breq2 5034 | . . . . 5 ⊢ (𝑥 = 𝐶 → (𝐴 < 𝑥 ↔ 𝐴 < 𝐶)) | |
4 | breq1 5033 | . . . . 5 ⊢ (𝑥 = 𝐶 → (𝑥 < 𝐵 ↔ 𝐶 < 𝐵)) | |
5 | 3, 4 | anbi12d 633 | . . . 4 ⊢ (𝑥 = 𝐶 → ((𝐴 < 𝑥 ∧ 𝑥 < 𝐵) ↔ (𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) |
6 | 5 | elrab 3628 | . . 3 ⊢ (𝐶 ∈ {𝑥 ∈ ℝ ∣ (𝐴 < 𝑥 ∧ 𝑥 < 𝐵)} ↔ (𝐶 ∈ ℝ ∧ (𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) |
7 | 3anass 1092 | . . 3 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵) ↔ (𝐶 ∈ ℝ ∧ (𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) | |
8 | 6, 7 | bitr4i 281 | . 2 ⊢ (𝐶 ∈ {𝑥 ∈ ℝ ∣ (𝐴 < 𝑥 ∧ 𝑥 < 𝐵)} ↔ (𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵)) |
9 | 2, 8 | syl6bb 290 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴(,)𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1084 = wceq 1538 ∈ wcel 2111 {crab 3110 class class class wbr 5030 (class class class)co 7135 ℝcr 10525 ℝ*cxr 10663 < clt 10664 (,)cioo 12726 |
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 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-pre-lttri 10600 ax-pre-lttrn 10601 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5425 df-po 5438 df-so 5439 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-ov 7138 df-oprab 7139 df-mpo 7140 df-1st 7671 df-2nd 7672 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-ioo 12730 |
This theorem is referenced by: eliooord 12784 elioopnf 12821 elioomnf 12822 difreicc 12862 xov1plusxeqvd 12876 tanhbnd 15506 bl2ioo 23397 xrtgioo 23411 zcld 23418 iccntr 23426 icccmplem2 23428 reconnlem1 23431 reconnlem2 23432 icoopnst 23544 iocopnst 23545 ivthlem3 24057 ovolicc2lem1 24121 ovolicc2lem5 24125 ioombl1lem4 24165 mbfmax 24253 itg2monolem1 24354 itg2monolem3 24356 dvferm1lem 24587 dvferm2lem 24589 dvlip2 24598 dvivthlem1 24611 lhop1lem 24616 lhop 24619 dvcnvrelem1 24620 dvcnvre 24622 itgsubst 24652 sincosq1sgn 25091 sincosq2sgn 25092 sincosq3sgn 25093 sincosq4sgn 25094 coseq00topi 25095 tanabsge 25099 sinq12gt0 25100 sinq12ge0 25101 cosq14gt0 25103 sincos6thpi 25108 sineq0 25116 cos02pilt1 25118 cosq34lt1 25119 cosordlem 25122 cos0pilt1 25124 tanord1 25129 tanord 25130 argregt0 25201 argimgt0 25203 argimlt0 25204 dvloglem 25239 logf1o2 25241 efopnlem2 25248 asinsinlem 25477 acoscos 25479 atanlogsublem 25501 atantan 25509 atanbndlem 25511 atanbnd 25512 atan1 25514 scvxcvx 25571 basellem1 25666 pntibndlem1 26173 pntibnd 26177 pntlemc 26179 padicabvf 26215 padicabvcxp 26216 dfrp2 30517 cnre2csqlem 31263 ivthALT 33796 iooelexlt 34779 itg2gt0cn 35112 iblabsnclem 35120 dvasin 35141 areacirclem1 35145 areacirc 35150 cvgdvgrat 41017 radcnvrat 41018 sineq0ALT 41643 ioogtlb 42132 eliood 42135 eliooshift 42143 iooltub 42147 limciccioolb 42263 limcicciooub 42279 cncfioobdlem 42538 ditgeqiooicc 42602 dirkercncflem1 42745 dirkercncflem4 42748 fourierdlem10 42759 fourierdlem32 42781 fourierdlem62 42810 fourierdlem81 42829 fourierdlem82 42830 fourierdlem93 42841 fourierdlem104 42852 fourierdlem111 42859 |
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