Scalar may refer to: *

Scalar (mathematics) A scalar is an element of a field which is used to define a ''vector space''. In linear algebra, real numbers or generally elements of a field are called scalars and relate to vectors in an associated vector space through the operation of scala ...

, an element of a field, which is used to define a vector space, usually the field of real numbers *

Scalar (physics) In physics, scalars (or scalar quantities) are physical quantities that are unaffected by changes to a vector space basis (i.e., a coordinate system transformation). Scalars are often accompanied by units of measurement, as in "10 cm". Examples o ...

, a physical quantity that can be described by a single element of a number field such as a real number **

Lorentz scalar In a relativistic theory of physics, a Lorentz scalar is an expression, formed from items of the theory, which evaluates to a scalar, invariant under any Lorentz transformation. A Lorentz scalar may be generated from e.g., the scalar product of ...

, a quantity in the theory of relativity which is invariant under a Lorentz transformation ** Pseudoscalar, a quantity that behaves like a scalar, except that it changes sign under a parity inversion * Scalar (computing), any non-composite value *

Scalar boson A scalar boson is a boson whose spin equals zero. ''Boson'' means that the particle's wave function is symmetric under particle exchange and therefore follows Bose–Einstein statistics. The spin-statistics theorem implies that all bosons have a ...

, in physics, a boson subatomic particle whose spin equals zero

See also