User:The Anome/Knotilus identifier

Knotilus identifier

   Under discussion

Description	Link from mathematical knot/link articles to authoritative information source Knotilus
Data type	External identifier
Domain	knot (Q1188853), link (Q1760728) and subclasses
Allowed values	[1-9][0-9]*([,:][1-9][0-9]*)*
Example 1	trefoil knot (Q168620) → 1,2,3,1,2,3
Example 2	figure-eight knot (Q168697) → 1,2,3,4,2,1,4,3
Example 3	Hopf link (Q864313) → 1,2:1,2
Example 4	Whitehead link (Q2588098) → 1,2,3,4,5,3:1,2,5,4
Source	Knotilus (Q96633538)
Planned use	to be used to link Wikidata entries on knots and links to Knotilus, an authoritative source of information on these
Number of IDs in source	> 2000
Expected completeness	always incomplete (Q21873886)
Formatter URL	http://knotilus.math.uwo.ca/draw.php?knot=$1

Motivation

Knotilus is an authoritative source of information on mathematical knots and links, for which both Wikipedia and Wikidata have a number of entries. It is maintained by a group of mathematicians and hosted at the w:University of Western Ontario. Providing links to Knotilus will provide Wikidata users access to a wide range of information about these entities that goes far beyond the range of information currently planned to be stored on Wikidata, as well as providing a source of potential data for those entries. If this property is created, I hope eventually to be able to fill in values for existing entries using my bot.

NOTES

• The site appears to be down. Its maintainer seems to be https://twitter.com/rfurmaniak , who seems to be busy with other things. -- The Anome (talk) 21:33, 16 July 2020 (UTC)
• It looks like the Knotilus identifiers can be systematically derived from the knots themselves: see code here. -- The Anome (talk) 13:53, 18 July 2020 (UTC)
• It looks like Knotilus is permanently down and nothing has been archived from it, and these identifiers are therefore no longer relevant. A pity, but there it is. The Anome (talk) 21:34, 11 July 2022 (UTC)