| Display title | Open set |
| Default sort key | Open set |
| Page length (in bytes) | 27,941 |
| Namespace ID | 0 |
| Page ID | 39358 |
| Page content language | en - English |
| Page content model | wikitext |
| Indexing by robots | Allowed |
| Number of page watchers | 212 |
| Number of page watchers who visited in the last 30 days | 23 |
| Number of redirects to this page | 9 |
| Counted as a content page | Yes |
| Wikidata item ID | Q213363 |
| Local description | Basic subset of a topological space |
| Central description | set that does not contain any of its boundary points |
| Page image |  |
| Page views in the past 30 days | |
| Edit | Allow all users (no expiry set) |
| Move | Allow all users (no expiry set) |
| Page creator | 210.55.230.17 (talk) |
| Date of page creation | 14:16, 16 February 2002 |
| Latest editor | 86.13.255.236 (talk) |
| Date of latest edit | 20:38, 20 October 2024 |
| Total number of edits | 504 |
| Recent number of edits (within past 30 days) | 0 |
| Recent number of distinct authors | 0 |
| Hidden categories (4) | This page is a member of 4 hidden categories (help):
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| Transcluded templates (105) | Pages transcluded onto the current version of this page (help):
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| Wikidata entities used in this page | |
| Background color inline style rule exists without a corresponding text color | 1 |
