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Mirrors > Home > MPE Home > Th. List > elicopnf | Structured version Visualization version GIF version |
Description: Membership in a closed unbounded interval of reals. (Contributed by Mario Carneiro, 16-Sep-2014.) |
Ref | Expression |
---|---|
elicopnf | ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pnfxr 10684 | . . 3 ⊢ +∞ ∈ ℝ* | |
2 | elico2 12789 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ +∞ ∈ ℝ*) → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞))) | |
3 | 1, 2 | mpan2 690 | . 2 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞))) |
4 | ltpnf 12503 | . . . . 5 ⊢ (𝐵 ∈ ℝ → 𝐵 < +∞) | |
5 | 4 | adantr 484 | . . . 4 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → 𝐵 < +∞) |
6 | 5 | pm4.71i 563 | . . 3 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ↔ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝐵 < +∞)) |
7 | df-3an 1086 | . . 3 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞) ↔ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝐵 < +∞)) | |
8 | 6, 7 | bitr4i 281 | . 2 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞)) |
9 | 3, 8 | syl6bbr 292 | 1 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1084 ∈ wcel 2111 class class class wbr 5030 (class class class)co 7135 ℝcr 10525 +∞cpnf 10661 ℝ*cxr 10663 < clt 10664 ≤ cle 10665 [,)cico 12728 |
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-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-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-ico 12732 |
This theorem is referenced by: elrege0 12832 rexico 14705 limsupgle 14826 limsupgre 14830 rlim3 14847 ello12 14865 lo1bdd2 14873 elo12 14876 lo1resb 14913 rlimresb 14914 o1resb 14915 lo1eq 14917 rlimeq 14918 rlimsqzlem 14997 o1fsum 15160 ovolicopnf 24128 dvfsumrlimge0 24633 dvfsumrlim 24634 dvfsumrlim2 24635 cxp2lim 25562 chebbnd1 26056 chtppilimlem1 26057 chtppilimlem2 26058 chtppilim 26059 chebbnd2 26061 chto1lb 26062 chpchtlim 26063 chpo1ub 26064 vmadivsumb 26067 dchrisumlema 26072 dchrisumlem2 26074 dchrisumlem3 26075 dchrmusumlema 26077 dchrmusum2 26078 dchrvmasumlem2 26082 dchrvmasumiflem1 26085 dchrisum0lema 26098 dchrisum0lem1b 26099 dchrisum0lem2a 26101 dchrisum0lem2 26102 2vmadivsumlem 26124 selbergb 26133 selberg2b 26136 chpdifbndlem1 26137 selberg3lem1 26141 selberg3lem2 26142 selberg4lem1 26144 pntrsumo1 26149 selbergsb 26159 pntrlog2bndlem3 26163 pntpbnd1 26170 pntpbnd2 26171 pntibndlem3 26176 pntlemn 26184 pntlem3 26193 pntleml 26195 pnt2 26197 uzssico 30533 itg2addnclem2 35109 2xp3dxp2ge1d 39387 elbigo2 44966 rege1logbrege0 44972 blennnelnn 44990 dignnld 45017 |
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