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| Mirrors > Home > MPE Home > Th. List > ordtrestixx | Structured version Visualization version GIF version | ||
| Description: The restriction of the less than order to an interval gives the same topology as the subspace topology. (Contributed by Mario Carneiro, 9-Sep-2015.) |
| Ref | Expression |
|---|---|
| ordtrestixx.1 | ⊢ 𝐴 ⊆ ℝ* |
| ordtrestixx.2 | ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥[,]𝑦) ⊆ 𝐴) |
| Ref | Expression |
|---|---|
| ordtrestixx | ⊢ ((ordTop‘ ≤ ) ↾t 𝐴) = (ordTop‘( ≤ ∩ (𝐴 × 𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ledm 18525 | . . . 4 ⊢ ℝ* = dom ≤ | |
| 2 | letsr 18528 | . . . . 5 ⊢ ≤ ∈ TosetRel | |
| 3 | 2 | a1i 11 | . . . 4 ⊢ (⊤ → ≤ ∈ TosetRel ) |
| 4 | ordtrestixx.1 | . . . . 5 ⊢ 𝐴 ⊆ ℝ* | |
| 5 | 4 | a1i 11 | . . . 4 ⊢ (⊤ → 𝐴 ⊆ ℝ*) |
| 6 | 4 | sseli 3931 | . . . . . . 7 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ ℝ*) |
| 7 | 4 | sseli 3931 | . . . . . . 7 ⊢ (𝑦 ∈ 𝐴 → 𝑦 ∈ ℝ*) |
| 8 | iccval 13312 | . . . . . . 7 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑥[,]𝑦) = {𝑧 ∈ ℝ* ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 ≤ 𝑦)}) | |
| 9 | 6, 7, 8 | syl2an 597 | . . . . . 6 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥[,]𝑦) = {𝑧 ∈ ℝ* ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 ≤ 𝑦)}) |
| 10 | ordtrestixx.2 | . . . . . 6 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥[,]𝑦) ⊆ 𝐴) | |
| 11 | 9, 10 | eqsstrrd 3971 | . . . . 5 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → {𝑧 ∈ ℝ* ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 ≤ 𝑦)} ⊆ 𝐴) |
| 12 | 11 | adantl 481 | . . . 4 ⊢ ((⊤ ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴)) → {𝑧 ∈ ℝ* ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 ≤ 𝑦)} ⊆ 𝐴) |
| 13 | 1, 3, 5, 12 | ordtrest2 23160 | . . 3 ⊢ (⊤ → (ordTop‘( ≤ ∩ (𝐴 × 𝐴))) = ((ordTop‘ ≤ ) ↾t 𝐴)) |
| 14 | 13 | eqcomd 2743 | . 2 ⊢ (⊤ → ((ordTop‘ ≤ ) ↾t 𝐴) = (ordTop‘( ≤ ∩ (𝐴 × 𝐴)))) |
| 15 | 14 | mptru 1549 | 1 ⊢ ((ordTop‘ ≤ ) ↾t 𝐴) = (ordTop‘( ≤ ∩ (𝐴 × 𝐴))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ⊤wtru 1543 ∈ wcel 2114 {crab 3401 ∩ cin 3902 ⊆ wss 3903 class class class wbr 5100 × cxp 5630 ‘cfv 6500 (class class class)co 7368 ℝ*cxr 11177 ≤ cle 11179 [,]cicc 13276 ↾t crest 17352 ordTopcordt 17432 TosetRel ctsr 18500 |
| 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-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-pre-lttri 11112 ax-pre-lttrn 11113 |
| 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-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-int 4905 df-iun 4950 df-iin 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-1o 8407 df-2o 8408 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-fi 9326 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-icc 13280 df-rest 17354 df-topgen 17375 df-ordt 17434 df-ps 18501 df-tsr 18502 df-top 22850 df-topon 22867 df-bases 22902 |
| This theorem is referenced by: ordtresticc 23179 icopnfhmeo 24909 |
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