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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 11387 | . . 3 ⊢ +∞ ∈ ℝ* | |
| 2 | elico2 13565 | . . 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 13273 | . . . . 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 2147 class class class wbr 5106 (class class class)co 7440 ℝcr 11223 +∞cpnf 11364 ℝ*cxr 11366 < clt 11367 ≤ cle 11368 [,)cico 13502 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-cnex 11280 ax-resscn 11281 ax-pre-lttri 11298 ax-pre-lttrn 11299 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-po 5563 df-so 5564 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-ov 7443 df-oprab 7444 df-mpo 7445 df-er 8742 df-en 8999 df-dom 9000 df-sdom 9001 df-pnf 11369 df-mnf 11370 df-xr 11371 df-ltxr 11372 df-le 11373 df-ico 13506 |
| This theorem is used by: elrege0 13609 rexico 15547 limsupgle 15670 limsupgre 15674 rlim3 15691 ello12 15709 lo1bdd2 15717 elo12 15720 lo1resb 15757 rlimresb 15758 o1resb 15759 lo1eq 15761 rlimeq 15762 rlimsqzlem 15842 o1fsum 16006 ovolicopnf 25872 dvfsumrlimge0 26377 dvfsumrlim 26378 dvfsumrlim2 26379 cxp2lim 27331 chebbnd1 27826 chtppilimlem1 27827 chtppilimlem2 27828 chtppilim 27829 chebbnd2 27831 chto1lb 27832 chpchtlim 27833 chpo1ub 27834 vmadivsumb 27837 dchrisumlema 27842 dchrisumlem2 27844 dchrisumlem3 27845 dchrmusumlema 27847 dchrmusum2 27848 dchrvmasumlem2 27852 dchrvmasumiflem1 27855 dchrisum0lema 27868 dchrisum0lem1b 27869 dchrisum0lem2a 27871 dchrisum0lem2 27872 2vmadivsumlem 27894 selbergb 27903 selberg2b 27906 chpdifbndlem1 27907 selberg3lem1 27911 selberg3lem2 27912 selberg4lem1 27914 pntrsumo1 27919 selbergsb 27929 pntrlog2bndlem3 27933 pntpbnd1 27940 pntpbnd2 27941 pntibndlem3 27946 pntlemn 27954 pntlem3 27963 pntleml 27965 pnt2 27967 uzssico 33443 itg2addnclem2 38781 ceilhalfnn 48613 elbigo2 49867 rege1logbrege0 49873 blennnelnn 49891 dignnld 49918 |
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