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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 10694 | . . 3 ⊢ +∞ ∈ ℝ* | |
2 | elico2 12799 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ +∞ ∈ ℝ*) → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞))) | |
3 | 1, 2 | mpan2 689 | . 2 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞))) |
4 | ltpnf 12514 | . . . . 5 ⊢ (𝐵 ∈ ℝ → 𝐵 < +∞) | |
5 | 4 | adantr 483 | . . . 4 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → 𝐵 < +∞) |
6 | 5 | pm4.71i 562 | . . 3 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ↔ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝐵 < +∞)) |
7 | df-3an 1085 | . . 3 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞) ↔ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝐵 < +∞)) | |
8 | 6, 7 | bitr4i 280 | . 2 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞)) |
9 | 3, 8 | syl6bbr 291 | 1 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 ∧ wa 398 ∧ w3a 1083 ∈ wcel 2110 class class class wbr 5065 (class class class)co 7155 ℝcr 10535 +∞cpnf 10671 ℝ*cxr 10673 < clt 10674 ≤ cle 10675 [,)cico 12739 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5202 ax-nul 5209 ax-pow 5265 ax-pr 5329 ax-un 7460 ax-cnex 10592 ax-resscn 10593 ax-pre-lttri 10610 ax-pre-lttrn 10611 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4838 df-br 5066 df-opab 5128 df-mpt 5146 df-id 5459 df-po 5473 df-so 5474 df-xp 5560 df-rel 5561 df-cnv 5562 df-co 5563 df-dm 5564 df-rn 5565 df-res 5566 df-ima 5567 df-iota 6313 df-fun 6356 df-fn 6357 df-f 6358 df-f1 6359 df-fo 6360 df-f1o 6361 df-fv 6362 df-ov 7158 df-oprab 7159 df-mpo 7160 df-er 8288 df-en 8509 df-dom 8510 df-sdom 8511 df-pnf 10676 df-mnf 10677 df-xr 10678 df-ltxr 10679 df-le 10680 df-ico 12743 |
This theorem is referenced by: elrege0 12841 rexico 14712 limsupgle 14833 limsupgre 14837 rlim3 14854 ello12 14872 lo1bdd2 14880 elo12 14883 lo1resb 14920 rlimresb 14921 o1resb 14922 lo1eq 14924 rlimeq 14925 rlimsqzlem 15004 o1fsum 15167 ovolicopnf 24124 dvfsumrlimge0 24626 dvfsumrlim 24627 dvfsumrlim2 24628 cxp2lim 25553 chebbnd1 26047 chtppilimlem1 26048 chtppilimlem2 26049 chtppilim 26050 chebbnd2 26052 chto1lb 26053 chpchtlim 26054 chpo1ub 26055 vmadivsumb 26058 dchrisumlema 26063 dchrisumlem2 26065 dchrisumlem3 26066 dchrmusumlema 26068 dchrmusum2 26069 dchrvmasumlem2 26073 dchrvmasumiflem1 26076 dchrisum0lema 26089 dchrisum0lem1b 26090 dchrisum0lem2a 26092 dchrisum0lem2 26093 2vmadivsumlem 26115 selbergb 26124 selberg2b 26127 chpdifbndlem1 26128 selberg3lem1 26132 selberg3lem2 26133 selberg4lem1 26135 pntrsumo1 26140 selbergsb 26150 pntrlog2bndlem3 26154 pntpbnd1 26161 pntpbnd2 26162 pntibndlem3 26167 pntlemn 26175 pntlem3 26184 pntleml 26186 pnt2 26188 uzssico 30506 itg2addnclem2 34943 elbigo2 44611 rege1logbrege0 44617 blennnelnn 44635 dignnld 44662 |
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