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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 11290 | . . 3 ⊢ +∞ ∈ ℝ* | |
| 2 | elico2 13465 | . . 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 13173 | . . . . 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 2145 class class class wbr 5107 (class class class)co 7416 ℝcr 11126 +∞cpnf 11267 ℝ*cxr 11269 < clt 11270 ≤ cle 11271 [,)cico 13402 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-cnex 11183 ax-resscn 11184 ax-pre-lttri 11201 ax-pre-lttrn 11202 |
| 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 2100 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 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-po 5567 df-so 5568 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7419 df-oprab 7420 df-mpo 7421 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-ico 13406 |
| This theorem is used by: elrege0 13509 rexico 15443 limsupgle 15566 limsupgre 15570 rlim3 15587 ello12 15605 lo1bdd2 15613 elo12 15616 lo1resb 15653 rlimresb 15654 o1resb 15655 lo1eq 15657 rlimeq 15658 rlimsqzlem 15738 o1fsum 15902 ovolicopnf 25753 dvfsumrlimge0 26259 dvfsumrlim 26260 dvfsumrlim2 26261 cxp2lim 27211 chebbnd1 27706 chtppilimlem1 27707 chtppilimlem2 27708 chtppilim 27709 chebbnd2 27711 chto1lb 27712 chpchtlim 27713 chpo1ub 27714 vmadivsumb 27717 dchrisumlema 27722 dchrisumlem2 27724 dchrisumlem3 27725 dchrmusumlema 27727 dchrmusum2 27728 dchrvmasumlem2 27732 dchrvmasumiflem1 27735 dchrisum0lema 27748 dchrisum0lem1b 27749 dchrisum0lem2a 27751 dchrisum0lem2 27752 2vmadivsumlem 27774 selbergb 27783 selberg2b 27786 chpdifbndlem1 27787 selberg3lem1 27791 selberg3lem2 27792 selberg4lem1 27794 pntrsumo1 27799 selbergsb 27809 pntrlog2bndlem3 27813 pntpbnd1 27820 pntpbnd2 27821 pntibndlem3 27826 pntlemn 27834 pntlem3 27843 pntleml 27845 pnt2 27847 uzssico 33242 itg2addnclem2 38408 ceilhalfnn 48215 elbigo2 49469 rege1logbrege0 49475 blennnelnn 49493 dignnld 49520 |
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