Property talk:P8378

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Dowker-Thistlethwaite notation
descriptive property of mathematical knots, also known as Dowker notation

Represents	Dowker–Thistlethwaite notation (Q5302692)
Data type	Mathematical expression
Domain	knot (Q1188853)
Example	trefoil knot (Q168620) → $4,6,2$
Source	https://knotinfo.math.indiana.edu/ http://katlas.math.toronto.edu/ https://knotinfo.math.indiana.edu/descriptions/dt_notation.html http://katlas.math.toronto.edu/wiki/DT_(Dowker-Thistlethwaite)_Codes
See also	Alexander–Briggs notation (P6432), Dowker-Thistlethwaite name (P8416), Gauss notation (P11034)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P8378 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2,981 Main statement 2,979 >99.9% of uses Qualifier 2 <0.1% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Format “((-?[1-9][0-9]*)(, -?[1-9][0-9]*)*)?”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8378#Format, SPARQL

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8378#Single value, SPARQL

Type “knot (Q1188853)”: item must contain property “instance of (P31)” with classes “knot (Q1188853)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8378#Type Q1188853, SPARQL

String datatype

Wouldn't this have been better with string datatype? --- Jura 13:04, 28 June 2020 (UTC)