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Qu'est-ce (qui) est scalar - définition
WIKIMEDIA DISAMBIGUATION PAGE
Scalars; Scalar quantity; Scalar quantities; Scalar (disambiguation); Scalar value
scalar
1. <mathematics> A single number, as opposed to a vector or
matrix of numbers. Thus, for example, "scalar
multiplication" refers to the operation of multiplying one
number (one scalar) by another and is used to contrast this
with "matrix multiplication" etc.
2. <architecture> In a parallel processor or {vector
processor}, the "scalar processor" handles all the sequential
operations - those which cannot be parallelised or vectorised.
See also superscalar.
3. <programming> Any data type that stores a single value
(e.g. a number or Boolean), as opposed to an aggregate
data type that has many elements. A string is regarded as a
scalar in some languages (e.g. Perl) and a vector of
characters in others (e.g. C).
(2002-06-12)
Scalar
·noun In the quaternion analysis, a quantity that has magnitude, but not direction;
- distinguished from a vector, which has both magnitude and direction.
Scalar (physics)
ONE-DIMENSIONAL PHYSICAL QUANTITY
Scalar quantity (physics)
In physics, scalars (or scalar quantities) are physical quantities that are unaffected by changes to a vector space basis (i.e.
Wikipédia
Scalar
Scalar may refer to:
- Scalar (mathematics), an element of a field, which is used to define a vector space, usually the field of real numbers
- Scalar (physics), a physical quantity that can be described by a single element of a number field such as a real number
- Lorentz scalar, 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, in physics, a boson subatomic particle whose spin equals zero
