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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 13483 | . 2 ⊢ (,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑥 ∈ ℝ* ∣ (𝑎 < 𝑥 ∧ 𝑥 < 𝑏)}) | |
| 2 | df-ico 13485 | . 2 ⊢ [,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑥 ∈ ℝ* ∣ (𝑎 ≤ 𝑥 ∧ 𝑥 < 𝑏)}) | |
| 3 | xrltle 13281 | . 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 13493 | 1 ⊢ (𝐴(,)𝐵) ⊆ (𝐴[,)𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ wa 401 ∈ wcel 2144 ⊆ wss 3895 class class class wbr 5102 (class class class)co 7420 ℝ*cxr 11345 < clt 11346 ≤ cle 11347 (,)cioo 13479 [,)cico 13481 |
| 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 11259 ax-resscn 11260 ax-pre-lttri 11277 ax-pre-lttrn 11278 |
| 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 4585 df-pr 4587 df-op 4835 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 8720 df-en 8977 df-dom 8978 df-sdom 8979 df-pnf 11348 df-mnf 11349 df-xr 11350 df-ltxr 11351 df-le 11352 df-ioo 13483 df-ico 13485 |
| This theorem is used by: elicoelioo 33416 esumdivc 34761 omssubadd 34978 rpsqrtcn 35268 icomnfinre 46657 uzubico 46671 uzubico2 46673 limcresioolb 46746 icocncflimc 46992 fourierdlem41 47251 fourierdlem46 47255 fouriersw 47334 ovolval5lem3 47757 ioosshoi 47772 vonioolem2 47784 amgmwlem 51155 |
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