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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 11363 | . . 3 ⊢ +∞ ∈ ℝ* | |
| 2 | elico2 13541 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ +∞ ∈ ℝ*) → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞))) | |
| 3 | 1, 2 | mpan2 704 | . 2 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ (𝐴[,)+∞) ↔ (𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵 ∧ 𝐵 < +∞))) |
| 4 | ltpnf 13249 | . . . . 5 ⊢ (𝐵 ∈ ℝ → 𝐵 < +∞) | |
| 5 | 4 | adantr 486 | . . . 4 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → 𝐵 < +∞) |
| 6 | 5 | pm4.71i 569 | . . 3 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ↔ ((𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝐵 < +∞)) |
| 7 | df-3an 1105 | . . 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 401 ∧ w3a 1103 ∈ wcel 2144 class class class wbr 5102 (class class class)co 7420 ℝcr 11199 +∞cpnf 11340 ℝ*cxr 11342 < clt 11343 ≤ cle 11344 [,)cico 13478 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-pre-lttri 11274 ax-pre-lttrn 11275 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-po 5558 df-so 5559 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-oprab 7424 df-mpo 7425 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-ico 13482 |
| This theorem is used by: elrege0 13585 rexico 15521 limsupgle 15644 limsupgre 15648 rlim3 15665 ello12 15683 lo1bdd2 15691 elo12 15694 lo1resb 15731 rlimresb 15732 o1resb 15733 lo1eq 15735 rlimeq 15736 rlimsqzlem 15816 o1fsum 15980 ovolicopnf 25845 dvfsumrlimge0 26350 dvfsumrlim 26351 dvfsumrlim2 26352 cxp2lim 27304 chebbnd1 27799 chtppilimlem1 27800 chtppilimlem2 27801 chtppilim 27802 chebbnd2 27804 chto1lb 27805 chpchtlim 27806 chpo1ub 27807 vmadivsumb 27810 dchrisumlema 27815 dchrisumlem2 27817 dchrisumlem3 27818 dchrmusumlema 27820 dchrmusum2 27821 dchrvmasumlem2 27825 dchrvmasumiflem1 27828 dchrisum0lema 27841 dchrisum0lem1b 27842 dchrisum0lem2a 27844 dchrisum0lem2 27845 2vmadivsumlem 27867 selbergb 27876 selberg2b 27879 chpdifbndlem1 27880 selberg3lem1 27884 selberg3lem2 27885 selberg4lem1 27887 pntrsumo1 27892 selbergsb 27902 pntrlog2bndlem3 27906 pntpbnd1 27913 pntpbnd2 27914 pntibndlem3 27919 pntlemn 27927 pntlem3 27936 pntleml 27938 pnt2 27940 uzssico 33376 itg2addnclem2 38591 ceilhalfnn 48410 elbigo2 49664 rege1logbrege0 49670 blennnelnn 49688 dignnld 49715 |
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