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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 13367 | . 2 ⊢ (,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑥 ∈ ℝ* ∣ (𝑎 < 𝑥 ∧ 𝑥 < 𝑏)}) | |
| 2 | df-ico 13369 | . 2 ⊢ [,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑥 ∈ ℝ* ∣ (𝑎 ≤ 𝑥 ∧ 𝑥 < 𝑏)}) | |
| 3 | xrltle 13165 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝑤 ∈ ℝ*) → (𝐴 < 𝑤 → 𝐴 ≤ 𝑤)) | |
| 4 | idd 25 | . 2 ⊢ ((𝑤 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝑤 < 𝐵 → 𝑤 < 𝐵)) | |
| 5 | 1, 2, 3, 4 | ixxssixx 13377 | 1 ⊢ (𝐴(,)𝐵) ⊆ (𝐴[,)𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 400 ∈ wcel 2145 ⊆ wss 3907 class class class wbr 5105 (class class class)co 7400 ℝ*cxr 11230 < clt 11231 ≤ cle 11232 (,)cioo 13363 [,)cico 13365 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 ax-cnex 11144 ax-resscn 11145 ax-pre-lttri 11162 ax-pre-lttrn 11163 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-br 5106 df-opab 5168 df-mpt 5187 df-id 5547 df-po 5560 df-so 5561 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-ov 7403 df-oprab 7404 df-mpo 7405 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-ioo 13367 df-ico 13369 |
| This theorem is referenced by: elicoelioo 33035 esumdivc 34390 omssubadd 34607 rpsqrtcn 34897 icomnfinre 46126 uzubico 46140 uzubico2 46142 limcresioolb 46215 icocncflimc 46461 fourierdlem41 46720 fourierdlem46 46724 fouriersw 46803 ovolval5lem3 47226 ioosshoi 47241 vonioolem2 47253 amgmwlem 50431 |
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