Property talk:P12975

Documentation

• Start a query
• Current uses
• Statistics by class
• String length
• List of qualifiers
• Count

Lexikon der Mathematik entry ID
identifier for an article in Lexikon der Mathematik on spektrum.de

Represents	Dictionary of mathematics (Q129781496)
Applicable "stated in" value	Dictionary of mathematics (Q129781496)
Data type	External identifier
Domain	human (Q5), mathematical concept (Q24034552) or mathematical object (Q246672)
Allowed values	\d+
Example	Albert Einstein (Q937) → 2607 Latin square (Q679367) → 6774 Collatz conjecture (Q837314) → 1712 axiom of choice (Q179692) → 390
Source	https://www.spektrum.de
Formatter URL	https://www.spektrum.de/lexikon/mathematik/-/$1
See also	Encyclopedia of Mathematics article ID (P7554), MathWorld ID (P2812), Treccani's Enciclopedia della Matematica ID (P9621)
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 external identifier 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 Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Mix'n'match (Report) Database reports/Constraint violations/P12975 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 393 Main statement 387 out of 11,796 (3% complete) 98.5% of uses Qualifier 4 1% of uses Reference 2 0.5% of uses
Search for values

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

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (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/P12975#Scope, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (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/P12975#Entity types

Distinct values: this property likely contains a value that is different from all other items. (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/P12975#Unique value, SPARQL (every item), SPARQL (by value)

Single best value: this property generally contains a single value. If there are several, one would have preferred rank (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/P12975#single best value, SPARQL

Type “human (Q5), mathematical concept (Q24034552), mathematical object (Q246672)”: item must contain property “instance of (P31), subclass of (P279)” with classes “human (Q5), mathematical concept (Q24034552), mathematical object (Q246672)” 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/P12975#Type Q5, Q24034552, Q246672, SPARQL

Format “\d+”: 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/P12975#Format, SPARQL

Label required in languages: de: Entities using this property should have labels in one of the following languages: de (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/P12975#Label in 'de' language, search, SPARQL