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| Mirrors > Home > MPE Home > Th. List > Mathboxes > reopn | Structured version Visualization version GIF version | ||
| Description: The reals are open with respect to the standard topology. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| reopn | ⊢ ℝ ∈ (topGen‘ran (,)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | retop 24918 | . 2 ⊢ (topGen‘ran (,)) ∈ Top | |
| 2 | uniretop 24919 | . . 3 ⊢ ℝ = ∪ (topGen‘ran (,)) | |
| 3 | 2 | topopn 23063 | . 2 ⊢ ((topGen‘ran (,)) ∈ Top → ℝ ∈ (topGen‘ran (,))) |
| 4 | 1, 3 | ax-mp 5 | 1 ⊢ ℝ ∈ (topGen‘ran (,)) |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2143 ran crn 5662 ‘cfv 6536 ℝcr 11094 (,)cioo 13367 topGenctg 17485 Topctop 23050 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11151 ax-resscn 11152 ax-pre-lttri 11169 ax-pre-lttrn 11170 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-id 5556 df-po 5569 df-so 5570 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-1st 7982 df-2nd 7983 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11240 df-mnf 11241 df-xr 11242 df-ltxr 11243 df-le 11244 df-ioo 13371 df-topgen 17491 df-top 23051 df-bases 23103 |
| This theorem is referenced by: fperdvper 46633 dirkeritg 46816 etransclem2 46950 etransclem23 46971 etransclem35 46983 etransclem38 46986 etransclem39 46987 etransclem44 46992 etransclem45 46993 etransclem47 46995 |
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