| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 7443 | . . 3 ⊢ (𝐴𝑂𝐵) = (𝑂‘〈𝐴, 𝐵〉) | |
| 2 | ixx.1 | . . . . 5 ⊢ 𝑂 = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥𝑅𝑧 ∧ 𝑧𝑆𝑦)}) | |
| 3 | 2 | ixxf 13510 | . . . 4 ⊢ 𝑂:(ℝ* × ℝ*)⟶𝒫 ℝ* |
| 4 | 0elpw 5321 | . . . 4 ⊢ ∅ ∈ 𝒫 ℝ* | |
| 5 | 3, 4 | f0cli 7119 | . . 3 ⊢ (𝑂‘〈𝐴, 𝐵〉) ∈ 𝒫 ℝ* |
| 6 | 1, 5 | eqeltri 2860 | . 2 ⊢ (𝐴𝑂𝐵) ∈ 𝒫 ℝ* |
| 7 | ovex 7473 | . . 3 ⊢ (𝐴𝑂𝐵) ∈ V | |
| 8 | 7 | elpw 4564 | . 2 ⊢ ((𝐴𝑂𝐵) ∈ 𝒫 ℝ* ↔ (𝐴𝑂𝐵) ⊆ ℝ*) |
| 9 | 6, 8 | mpbi 233 | 1 ⊢ (𝐴𝑂𝐵) ⊆ ℝ* |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ wa 401 = wceq 1570 ∈ wcel 2147 {crab 3416 ⊆ wss 3900 𝒫 cpw 4560 〈cop 4838 class class class wbr 5106 × cxp 5653 ‘cfv 6555 (class class class)co 7440 ∈ cmpo 7442 ℝ*cxr 11366 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pr 5395 ax-un 7772 ax-cnex 11280 ax-resscn 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-fv 6563 df-ov 7443 df-oprab 7444 df-mpo 7445 df-1st 8022 df-2nd 8023 df-xr 11371 |
| This theorem is used by: iccssxr 13585 iocssxr 13586 icossxr 13587 ioossioobi 46732 |
| Copyright terms: Public domain | W3C validator |