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| Mirrors > Home > MPE Home > Th. List > Mathboxes > icoreelrn | Structured version Visualization version GIF version | ||
| Description: A class abstraction which is an element of the set of closed-below, open-above intervals of reals. (Contributed by ML, 1-Aug-2020.) |
| Ref | Expression |
|---|---|
| icoreelrn.1 | ⊢ 𝐼 = ([,) “ (ℝ × ℝ)) |
| Ref | Expression |
|---|---|
| icoreelrn | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)} ∈ 𝐼) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | icoreval 37686 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,)𝐵) = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)}) | |
| 2 | simpl 482 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 𝐴 ∈ ℝ) | |
| 3 | simpr 484 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 𝐵 ∈ ℝ) | |
| 4 | df-ico 13298 | . . . . . 6 ⊢ [,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑎 ≤ 𝑧 ∧ 𝑧 < 𝑏)}) | |
| 5 | 4 | ixxf 13302 | . . . . 5 ⊢ [,):(ℝ* × ℝ*)⟶𝒫 ℝ* |
| 6 | ffun 6666 | . . . . 5 ⊢ ([,):(ℝ* × ℝ*)⟶𝒫 ℝ* → Fun [,)) | |
| 7 | 5, 6 | mp1i 13 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → Fun [,)) |
| 8 | rexpssxrxp 11184 | . . . . . 6 ⊢ (ℝ × ℝ) ⊆ (ℝ* × ℝ*) | |
| 9 | 5 | fdmi 6674 | . . . . . 6 ⊢ dom [,) = (ℝ* × ℝ*) |
| 10 | 8, 9 | sseqtrri 3972 | . . . . 5 ⊢ (ℝ × ℝ) ⊆ dom [,) |
| 11 | 10 | a1i 11 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (ℝ × ℝ) ⊆ dom [,)) |
| 12 | 2, 3, 7, 11 | elovimad 7411 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,)𝐵) ∈ ([,) “ (ℝ × ℝ))) |
| 13 | icoreelrn.1 | . . 3 ⊢ 𝐼 = ([,) “ (ℝ × ℝ)) | |
| 14 | 12, 13 | eleqtrrdi 2848 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,)𝐵) ∈ 𝐼) |
| 15 | 1, 14 | eqeltrrd 2838 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)} ∈ 𝐼) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 {crab 3390 ⊆ wss 3890 𝒫 cpw 4542 class class class wbr 5086 × cxp 5623 dom cdm 5625 “ cima 5628 Fun wfun 6487 ⟶wf 6489 (class class class)co 7361 ℝcr 11031 ℝ*cxr 11172 < clt 11173 ≤ cle 11174 [,)cico 13294 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-cnex 11088 ax-resscn 11089 ax-pre-lttri 11106 ax-pre-lttrn 11107 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5520 df-po 5533 df-so 5534 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-ov 7364 df-oprab 7365 df-mpo 7366 df-1st 7936 df-2nd 7937 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-ico 13298 |
| This theorem is referenced by: relowlssretop 37696 |
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