metaclass
class which has instances that are all themselves classes
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metaclass
Summary
metaclass is a concept[1].
Key Facts
- metaclass's instance of is recorded as concept[2].
- metaclass's instance of is recorded as formal ontology concept[3].
- metaclass's instance of is recorded as variable-order class[4].
- metaclass is a type of class[5].
- metaclass is part of ontology[6].
- metaclass's Commons category is recorded as Metaclass[7].
- metaclass's topic's main category is recorded as Category:Metaclass[8].
- metaclass's facet of is recorded as Semantic Web[9].
- metaclass's different from is recorded as Metaclass[10].
- metaclass's different from is recorded as Métaclasse[11].
- metaclass's different from is recorded as metaclass[12].
- metaclass's different from is recorded as second-order class[13].
- 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).[14].
- metaclass's on focus list of Wikimedia project is recorded as WikiProject Q68235346[15].
- metaclass's model item is recorded as second-order class[16].
- metaclass's maintained by WikiProject is recorded as WikiProject Ontology[17].
Body
Definition and Type
Recorded instance of include concept[2], formal ontology concept[3], and variable-order class[4]. metaclass is a type of class[5].
Use and Application
metaclass is part of ontology[6].