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| 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 7558 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴([,) ↾ (ℝ × ℝ))𝐵) = (𝐴[,)𝐵)) | |
| 2 | breq1 5102 | . . . . 5 ⊢ (𝑥 = 𝐴 → (𝑥 ≤ 𝑧 ↔ 𝐴 ≤ 𝑧)) | |
| 3 | 2 | anbi1d 640 | . . . 4 ⊢ (𝑥 = 𝐴 → ((𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦) ↔ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝑦))) |
| 4 | 3 | rabbidv 3420 | . . 3 ⊢ (𝑥 = 𝐴 → {𝑧 ∈ ℝ ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦)} = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝑦)}) |
| 5 | breq2 5103 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝑧 < 𝑦 ↔ 𝑧 < 𝐵)) | |
| 6 | 5 | anbi2d 639 | . . . 4 ⊢ (𝑦 = 𝐵 → ((𝐴 ≤ 𝑧 ∧ 𝑧 < 𝑦) ↔ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵))) |
| 7 | 6 | rabbidv 3420 | . . 3 ⊢ (𝑦 = 𝐵 → {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝑦)} = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)}) |
| 8 | eqid 2761 | . . . 4 ⊢ ([,) ↾ (ℝ × ℝ)) = ([,) ↾ (ℝ × ℝ)) | |
| 9 | 8 | icorempo 37809 | . . 3 ⊢ ([,) ↾ (ℝ × ℝ)) = (𝑥 ∈ ℝ, 𝑦 ∈ ℝ ↦ {𝑧 ∈ ℝ ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦)}) |
| 10 | reex 11161 | . . . 4 ⊢ ℝ ∈ V | |
| 11 | 10 | rabex 5294 | . . 3 ⊢ {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)} ∈ V |
| 12 | 4, 7, 9, 11 | ovmpo 7552 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴([,) ↾ (ℝ × ℝ))𝐵) = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)}) |
| 13 | 1, 12 | eqtr3d 2798 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,)𝐵) = {𝑧 ∈ ℝ ∣ (𝐴 ≤ 𝑧 ∧ 𝑧 < 𝐵)}) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 = wceq 1559 ∈ wcel 2141 {crab 3413 class class class wbr 5099 × cxp 5643 ↾ cres 5647 (class class class)co 7392 ℝcr 11069 < clt 11213 ≤ cle 11214 [,)cico 13348 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-cnex 11126 ax-resscn 11127 ax-pre-lttri 11144 ax-pre-lttrn 11145 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5540 df-po 5553 df-so 5554 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-ov 7395 df-oprab 7396 df-mpo 7397 df-er 8673 df-en 8924 df-dom 8925 df-sdom 8926 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-ico 13352 |
| This theorem is referenced by: icoreelrnab 37812 icoreelrn 37819 relowlssretop 37821 |
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