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| Mirrors > Home > MPE Home > Th. List > ioossico | Structured version Visualization version GIF version | ||
| Description: An open interval is a subset of its closure-below. (Contributed by Thierry Arnoux, 3-Mar-2017.) |
| Ref | Expression |
|---|---|
| ioossico | ⊢ (𝐴(,)𝐵) ⊆ (𝐴[,)𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ioo 13265 | . 2 ⊢ (,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑥 ∈ ℝ* ∣ (𝑎 < 𝑥 ∧ 𝑥 < 𝑏)}) | |
| 2 | df-ico 13267 | . 2 ⊢ [,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑥 ∈ ℝ* ∣ (𝑎 ≤ 𝑥 ∧ 𝑥 < 𝑏)}) | |
| 3 | xrltle 13063 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝑤 ∈ ℝ*) → (𝐴 < 𝑤 → 𝐴 ≤ 𝑤)) | |
| 4 | idd 24 | . 2 ⊢ ((𝑤 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝑤 < 𝐵 → 𝑤 < 𝐵)) | |
| 5 | 1, 2, 3, 4 | ixxssixx 13275 | 1 ⊢ (𝐴(,)𝐵) ⊆ (𝐴[,)𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 395 ∈ wcel 2113 ⊆ wss 3901 class class class wbr 5098 (class class class)co 7358 ℝ*cxr 11165 < clt 11166 ≤ cle 11167 (,)cioo 13261 [,)cico 13263 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-cnex 11082 ax-resscn 11083 ax-pre-lttri 11100 ax-pre-lttrn 11101 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-po 5532 df-so 5533 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7361 df-oprab 7362 df-mpo 7363 df-er 8635 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11168 df-mnf 11169 df-xr 11170 df-ltxr 11171 df-le 11172 df-ioo 13265 df-ico 13267 |
| This theorem is referenced by: elicoelioo 32858 esumdivc 34240 omssubadd 34457 rpsqrtcn 34750 icomnfinre 45794 uzubico 45808 uzubico2 45810 limcresioolb 45883 icocncflimc 46129 fourierdlem41 46388 fourierdlem46 46392 fouriersw 46471 ovolval5lem3 46894 ioosshoi 46909 vonioolem2 46921 amgmwlem 50043 |
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