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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 12208 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴(,)𝐵) = {𝑥 ∈ ℝ ∣ (𝐴 < 𝑥 ∧ 𝑥 < 𝐵)}) | |
2 | 1 | eleq2d 2687 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴(,)𝐵) ↔ 𝐶 ∈ {𝑥 ∈ ℝ ∣ (𝐴 < 𝑥 ∧ 𝑥 < 𝐵)})) |
3 | breq2 4657 | . . . . 5 ⊢ (𝑥 = 𝐶 → (𝐴 < 𝑥 ↔ 𝐴 < 𝐶)) | |
4 | breq1 4656 | . . . . 5 ⊢ (𝑥 = 𝐶 → (𝑥 < 𝐵 ↔ 𝐶 < 𝐵)) | |
5 | 3, 4 | anbi12d 747 | . . . 4 ⊢ (𝑥 = 𝐶 → ((𝐴 < 𝑥 ∧ 𝑥 < 𝐵) ↔ (𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) |
6 | 5 | elrab 3363 | . . 3 ⊢ (𝐶 ∈ {𝑥 ∈ ℝ ∣ (𝐴 < 𝑥 ∧ 𝑥 < 𝐵)} ↔ (𝐶 ∈ ℝ ∧ (𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) |
7 | 3anass 1042 | . . 3 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵) ↔ (𝐶 ∈ ℝ ∧ (𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) | |
8 | 6, 7 | bitr4i 267 | . 2 ⊢ (𝐶 ∈ {𝑥 ∈ ℝ ∣ (𝐴 < 𝑥 ∧ 𝑥 < 𝐵)} ↔ (𝐶 ∈ ℝ ∧ 𝐴 < 𝐶 ∧ 𝐶 < 𝐵)) |
9 | 2, 8 | syl6bb 276 | 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 196 ∧ wa 384 ∧ w3a 1037 = wceq 1483 ∈ wcel 1990 {crab 2916 class class class wbr 4653 (class class class)co 6650 ℝcr 9935 ℝ*cxr 10073 < clt 10074 (,)cioo 12175 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-cnex 9992 ax-resscn 9993 ax-pre-lttri 10010 ax-pre-lttrn 10011 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-po 5035 df-so 5036 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-1st 7168 df-2nd 7169 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-ioo 12179 |
This theorem is referenced by: eliooord 12233 elioopnf 12267 elioomnf 12268 difreicc 12304 xov1plusxeqvd 12318 tanhbnd 14891 bl2ioo 22595 xrtgioo 22609 zcld 22616 iccntr 22624 icccmplem2 22626 reconnlem1 22629 reconnlem2 22630 icoopnst 22738 iocopnst 22739 ivthlem3 23222 ovolicc2lem1 23285 ovolicc2lem5 23289 ioombl1lem4 23329 mbfmax 23416 itg2monolem1 23517 itg2monolem3 23519 dvferm1lem 23747 dvferm2lem 23749 dvlip2 23758 dvivthlem1 23771 lhop1lem 23776 lhop 23779 dvcnvrelem1 23780 dvcnvre 23782 itgsubst 23812 sincosq1sgn 24250 sincosq2sgn 24251 sincosq3sgn 24252 sincosq4sgn 24253 coseq00topi 24254 tanabsge 24258 sinq12gt0 24259 sinq12ge0 24260 cosq14gt0 24262 sincos6thpi 24267 sineq0 24273 cosordlem 24277 tanord1 24283 tanord 24284 argregt0 24356 argimgt0 24358 argimlt0 24359 dvloglem 24394 logf1o2 24396 efopnlem2 24403 asinsinlem 24618 acoscos 24620 atanlogsublem 24642 atantan 24650 atanbndlem 24652 atanbnd 24653 atan1 24655 scvxcvx 24712 basellem1 24807 pntibndlem1 25278 pntibnd 25282 pntlemc 25284 padicabvf 25320 padicabvcxp 25321 dfrp2 29532 cnre2csqlem 29956 ivthALT 32330 iooelexlt 33210 itg2gt0cn 33465 iblabsnclem 33473 dvasin 33496 areacirclem1 33500 areacirc 33505 cvgdvgrat 38512 radcnvrat 38513 sineq0ALT 39173 ioogtlb 39717 eliood 39720 eliooshift 39729 iooltub 39735 limciccioolb 39853 limcicciooub 39869 cncfioobdlem 40109 ditgeqiooicc 40176 dirkercncflem1 40320 dirkercncflem4 40323 fourierdlem10 40334 fourierdlem32 40356 fourierdlem62 40385 fourierdlem81 40404 fourierdlem82 40405 fourierdlem93 40416 fourierdlem104 40427 fourierdlem111 40434 |
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