metaclass

Summary

metaclass is a concept^[1]. metaclass draws 33 Wikipedia views per month (concept category, ranking #357 of 912).^[2]

Key Facts

• metaclass's instance of is recorded as concept^[3].
• metaclass's instance of is recorded as formal ontology concept^[4].
• metaclass's instance of is recorded as fundamental Wikidata entity^[5].
• metaclass is a type of class^[6].
• metaclass is part of ontology^[7].
• metaclass's Commons category is recorded as Metaclass^[8].
• metaclass's topic's main category is recorded as Category:Metaclass^[9].
• metaclass's facet of is recorded as Semantic Web^[10].
• metaclass's main Wikidata property is recorded as P8225^[11].
• metaclass's different from is recorded as Metaclass^[12].
• metaclass's different from is recorded as Métaclasse^[13].
• metaclass's different from is recorded as metaclass^[14].
• metaclass's different from is recorded as second-order class^[15].
• metaclass's Wikidata usage instructions is recorded as A metaclass in Wikidata, e.g., watercraft type (Q16335899), ship type (Q2235308), or second-order class (Q24017414), is an entity that can have other entities that are an instance of (P31) of it that in turn can have yet other entities that are an instance of (P31) of them. All metaclasses are thus classes. All metaclasses are implicitly an instance of (P31) metaclass (Q19478619). These implicit instance of (P31) statements are not all observable in Wikidata. Only a very few metaclasses should be be explicitly an instance of (P31) metaclass (Q19478619). Most metaclasses are fixed-order classes, e.g., their instances are classes of individuals, and should be an instance of (P31) an instance of (P31) fixed-order class (Q23959932) such as first-order class (Q104086571), second-order class (Q24017414), or, less commonly, third-order class (Q24017465).^[16].
• metaclass's on focus list of Wikimedia project is recorded as WikiProject Q68235346^[17].
• metaclass's model item is recorded as second-order class^[18].
• metaclass's maintained by WikiProject is recorded as WikiProject Ontology^[19].
• metaclass's is metaclass for is recorded as class^[20].
• metaclass's is metaclass for is recorded as type^[21].

Body

Definition and Type

Recorded instance of include concept^[3], formal ontology concept^[4], and fundamental Wikidata entity^[5]. metaclass is a type of class^[6].

Use and Application

metaclass is part of ontology^[7].

Why It Matters

metaclass draws 33 Wikipedia views per month (concept category, ranking #357 of 912).^[2] metaclass is known by 62 alternative names across languages and contexts.^[22]