empty set

set (in mathematics) containing no elements

Wikidata entity: Q226183

Wikimedia Commons category is Nested set V4

P2820 cardinality of this set ... Q204 (zero) zero
P373 Commons category String Nested set V4 ???
P1343 described by source ... Q109490582 (ISO 80000-2:2019 Quantities and units — Part 2: Mathematics) ISO 80000-2:2019 Quantities and units — Part 2: Mathematics
P1889 different from ... Q28827 (Ø) Ø
P1889 different from ... Q1201815 (null set) null set
P1889 different from ... Q30027695 (singleton of 0) singleton of 0
P31 instance of ... Q1201815 (null set) null set
P31 instance of ... Q39604693 (0-ad) 0-ad
P31 instance of ... Q272404 (finite set) finite set
P31 instance of ... Q320357 (closed set) closed set
P31 instance of ... Q213363 (open set) open set
P31 instance of ... Q36161 (set) set
P6104 maintained by WikiProject ... Q8487137 (WikiProject Mathematics) WikiProject Mathematics
P913 notation ... Q87524418 (???) ???
P5008 on focus list of Wikimedia project ... Q6173448 (Wikipedia:Vital articles/Level/4) Wikipedia:Vital articles/Level/4
P461 opposite of ... Q10533491 (non-empty set) non-empty set
P361 part of ... Q28659876 (list of types of sets) list of types of sets
P460 said to be the same as ... Q39604693 (0-ad) 0-ad
P1993 TeX string String \empty ???
P1993 TeX string String \emptyset ???
P1993 TeX string String \varnothing ???
External Ids
P6771Arabic Ontology concept ID293242
P7554Encyclopedia of Mathematics article IDEmpty_set
P646Freebase ID/m/02ly0
P11514Great Russian Encyclopedia portal IDpustoe-mnozhestvo-aa612b
P8313Lex IDØ_-_den_tomme_mængde
P2812MathWorld IDEmptySet
P12888Metamath statement IDdf-nul
P6366Microsoft Academic ID (discontinued)93713127
P4215nLab IDempty set
P6781ProofWiki IDDefinition:Empty_Set
P9621Treccani's Enciclopedia della Matematica IDinsieme-vuoto
P12800Vikidia article IDfr:Ensemble_vide

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