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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 11269 | . . 3 ⊢ +∞ ∈ ℝ* | |
| 2 | elico2 13443 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ +∞ ∈ ℝ*) → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞))) | |
| 3 | 1, 2 | mpan2 703 | . 2 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞))) |
| 4 | ltpnf 13151 | . . . . 5 ⊢ (𝐵 ∈ ℝ → 𝐵 < +∞) | |
| 5 | 4 | adantr 485 | . . . 4 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → 𝐵 < +∞) |
| 6 | 5 | pm4.71i 568 | . . 3 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ↔ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝐵 < +∞)) |
| 7 | df-3an 1104 | . . 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 | bitr4di 292 | 1 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1102 ∈ wcel 2142 class class class wbr 5108 (class class class)co 7412 ℝcr 11105 +∞cpnf 11246 ℝ*cxr 11248 < clt 11249 ≤ cle 11250 [,)cico 13380 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-pre-lttri 11180 ax-pre-lttrn 11181 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-mpt 5192 df-id 5555 df-po 5568 df-so 5569 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7415 df-oprab 7416 df-mpo 7417 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-ico 13384 |
| This theorem is used by: elrege0 13487 rexico 15412 limsupgle 15535 limsupgre 15539 rlim3 15556 ello12 15574 lo1bdd2 15582 elo12 15585 lo1resb 15622 rlimresb 15623 o1resb 15624 lo1eq 15626 rlimeq 15627 rlimsqzlem 15707 o1fsum 15872 ovolicopnf 25694 dvfsumrlimge0 26200 dvfsumrlim 26201 dvfsumrlim2 26202 cxp2lim 27152 chebbnd1 27647 chtppilimlem1 27648 chtppilimlem2 27649 chtppilim 27650 chebbnd2 27652 chto1lb 27653 chpchtlim 27654 chpo1ub 27655 vmadivsumb 27658 dchrisumlema 27663 dchrisumlem2 27665 dchrisumlem3 27666 dchrmusumlema 27668 dchrmusum2 27669 dchrvmasumlem2 27673 dchrvmasumiflem1 27676 dchrisum0lema 27689 dchrisum0lem1b 27690 dchrisum0lem2a 27692 dchrisum0lem2 27693 2vmadivsumlem 27715 selbergb 27724 selberg2b 27727 chpdifbndlem1 27728 selberg3lem1 27732 selberg3lem2 27733 selberg4lem1 27735 pntrsumo1 27740 selbergsb 27750 pntrlog2bndlem3 27754 pntpbnd1 27761 pntpbnd2 27762 pntibndlem3 27767 pntlemn 27775 pntlem3 27784 pntleml 27786 pnt2 27788 uzssico 33140 itg2addnclem2 38351 ceilhalfnn 48105 elbigo2 49360 rege1logbrege0 49366 blennnelnn 49384 dignnld 49411 |
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