| Mathbox for ML |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > icoreval | Structured version Visualization version GIF version | ||
| Description: Value of the closed-below, open-above interval function on reals. (Contributed by ML, 26-Jul-2020.) |
| Ref | Expression |
|---|---|
| icoreval | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,)𝐵) = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ovres 7566 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴([,) ↾ (ℝ × ℝ))𝐵) = (𝐴[,)𝐵)) | |
| 2 | breq1 5108 | . . . . 5 ⊢ (𝑥 = 𝐴 → (𝑥 ≤ 𝑧 ↔ 𝐴 ≤ 𝑧)) | |
| 3 | 2 | anbi1d 642 | . . . 4 ⊢ (𝑥 = 𝐴 → ((𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦) ↔ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝑦))) |
| 4 | 3 | rabbidv 3424 | . . 3 ⊢ (𝑥 = 𝐴 → {𝑧 ∈ ℝ ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦)} = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝑦)}) |
| 5 | breq2 5109 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝑧 < 𝑦 ↔ 𝑧 < 𝐵)) | |
| 6 | 5 | anbi2d 641 | . . . 4 ⊢ (𝑦 = 𝐵 → ((𝐴 ≤ 𝑧 ∧ 𝑧 < 𝑦) ↔ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵))) |
| 7 | 6 | rabbidv 3424 | . . 3 ⊢ (𝑦 = 𝐵 → {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝑦)} = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)}) |
| 8 | eqid 2765 | . . . 4 ⊢ ([,) ↾ (ℝ × ℝ)) = ([,) ↾ (ℝ × ℝ)) | |
| 9 | 8 | icorempo 37857 | . . 3 ⊢ ([,) ↾ (ℝ × ℝ)) = (𝑥 ∈ ℝ, 𝑦 ∈ ℝ ↦ {𝑧 ∈ ℝ ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦)}) |
| 10 | reex 11179 | . . . 4 ⊢ ℝ ∈ V | |
| 11 | 10 | rabex 5300 | . . 3 ⊢ {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)} ∈ V |
| 12 | 4, 7, 9, 11 | ovmpo 7560 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴([,) ↾ (ℝ × ℝ))𝐵) = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)}) |
| 13 | 1, 12 | eqtr3d 2802 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,)𝐵) = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)}) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1563 ∈ wcel 2145 {crab 3417 class class class wbr 5105 × cxp 5650 ↾ cres 5654 (class class class)co 7400 ℝcr 11087 < clt 11231 ≤ cle 11232 [,)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-ico 13369 |
| This theorem is referenced by: icoreelrnab 37860 icoreelrn 37867 relowlssretop 37869 |
| Copyright terms: Public domain | W3C validator |