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| Mirrors > Home > MPE Home > Th. List > ixxssxr | Structured version Visualization version GIF version | ||
| Description: The set of intervals of extended reals maps to subsets of extended reals. (Contributed by Mario Carneiro, 4-Jul-2014.) |
| Ref | Expression |
|---|---|
| ixx.1 | ⊢ 𝑂 = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥𝑅𝑧 ∧ 𝑧𝑆𝑦)}) |
| Ref | Expression |
|---|---|
| ixxssxr | ⊢ (𝐴𝑂𝐵) ⊆ ℝ* |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ov 7356 | . . 3 ⊢ (𝐴𝑂𝐵) = (𝑂‘〈𝐴, 𝐵〉) | |
| 2 | ixx.1 | . . . . 5 ⊢ 𝑂 = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥𝑅𝑧 ∧ 𝑧𝑆𝑦)}) | |
| 3 | 2 | ixxf 13276 | . . . 4 ⊢ 𝑂:(ℝ* × ℝ*)⟶𝒫 ℝ* |
| 4 | 0elpw 5298 | . . . 4 ⊢ ∅ ∈ 𝒫 ℝ* | |
| 5 | 3, 4 | f0cli 7036 | . . 3 ⊢ (𝑂‘〈𝐴, 𝐵〉) ∈ 𝒫 ℝ* |
| 6 | 1, 5 | eqeltri 2824 | . 2 ⊢ (𝐴𝑂𝐵) ∈ 𝒫 ℝ* |
| 7 | ovex 7386 | . . 3 ⊢ (𝐴𝑂𝐵) ∈ V | |
| 8 | 7 | elpw 4557 | . 2 ⊢ ((𝐴𝑂𝐵) ∈ 𝒫 ℝ* ↔ (𝐴𝑂𝐵) ⊆ ℝ*) |
| 9 | 6, 8 | mpbi 230 | 1 ⊢ (𝐴𝑂𝐵) ⊆ ℝ* |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 395 = wceq 1540 ∈ wcel 2109 {crab 3396 ⊆ wss 3905 𝒫 cpw 4553 〈cop 4585 class class class wbr 5095 × cxp 5621 ‘cfv 6486 (class class class)co 7353 ∈ cmpo 7355 ℝ*cxr 11167 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5238 ax-nul 5248 ax-pr 5374 ax-un 7675 ax-cnex 11084 ax-resscn 11085 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-iun 4946 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-fv 6494 df-ov 7356 df-oprab 7357 df-mpo 7358 df-1st 7931 df-2nd 7932 df-xr 11172 |
| This theorem is referenced by: iccssxr 13351 iocssxr 13352 icossxr 13353 ioossioobi 45499 |
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