About: Null (mathematics)

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In mathematics, the word null (from German: null meaning "zero", which is from Latin: nullus meaning "none") is often associated with the concept of zero or the concept of nothing. It is used in varying context from "having zero members in a set" (e.g., null set) to "having a value of zero" (e.g., null vector). In statistics, a null hypothesis is a proposition that no effect or relationship exists between populations and phenomena. It is the hypothesis which is presumed true—unless statistical evidence indicates otherwise.

Attributes	Values
rdfs:label	Null (mathematics) (en)
rdfs:comment	In mathematics, the word null (from German: null meaning "zero", which is from Latin: nullus meaning "none") is often associated with the concept of zero or the concept of nothing. It is used in varying context from "having zero members in a set" (e.g., null set) to "having a value of zero" (e.g., null vector). In statistics, a null hypothesis is a proposition that no effect or relationship exists between populations and phenomena. It is the hypothesis which is presumed true—unless statistical evidence indicates otherwise. (en)
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dcterms:subject	0 (number) Mathematical terminology
Wikipage page ID	3009815 (xsd:integer)
Wikipage revision ID	1124588257 (xsd:integer)
Link from a Wikipage to another Wikipage	Vector space Null hypothesis Null sign Null vector 0 0 (number) Mathematics Measure theory Neutral element Vertical bar Minkowski space Statistics Zero Empty set Null set Quadratic form Mathematical terminology Kernel (linear algebra) Dot product Set theory Matrix product Null space
sameAs	Null (mathematics) Null (mathematics) Null (mathematics)
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thumbnail	wiki-commons:Special:FilePath/Nullset.svg?width=300
footer	Empty set symbols (en)
image	Empty set symbol.svg (en) Nullset.svg (en)
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has abstract	In mathematics, the word null (from German: null meaning "zero", which is from Latin: nullus meaning "none") is often associated with the concept of zero or the concept of nothing. It is used in varying context from "having zero members in a set" (e.g., null set) to "having a value of zero" (e.g., null vector). In a vector space, the null vector is the neutral element of vector addition; depending on the context, a null vector may also be a vector mapped to some null by a function under consideration (such as a quadratic form coming with the vector space, see null vector, a linear mapping given as matrix product or dot product, a seminorm in a Minkowski space, etc.). In set theory, the empty set, that is, the set with zero elements, denoted "{}" or "∅", may also be called null set. In measure theory, a null set is a (possibly nonempty) set with zero measure. A null space of a mapping is the part of the domain that is mapped into the null element of the image (the inverse image of the null element). For example, in linear algebra, the null space of a linear mapping, also known as kernel, is the set of vectors which map to the null vector under that mapping. In statistics, a null hypothesis is a proposition that no effect or relationship exists between populations and phenomena. It is the hypothesis which is presumed true—unless statistical evidence indicates otherwise. (en)
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is Link from a Wikipage to another Wikipage of	Allopatric speciation Antenna analyzer Independent electron approximation Light-cone coordinates Null (Mathematics) Null Null Island Aryabhata Information bias (epidemiology)
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