Linear combinations, span, and basis vectors: Difference between revisions

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A set B of vectors in a vector space V is called a '''basis''' if every element of V may be written in a unique way as a '''finite linear combination of elements''' of B.


The coefficients of this linear combination are referred to as '''components or coordinates of the vector''' with respect to B.
The elements of a basis are called '''basis vectors'''.
Equivalently, a set B is a basis if its elements are linearly independent and every element of V is a linear combination of elements of B.[1] In other words, a basis is a linearly independent spanning set.
A vector space can have several bases; however all the bases have the same number of elements, called the dimension of the vector space.
span
basis of a vector
linearly dependent
linearly independent




[[Category:Linear Algebra]]
[[Category:Linear Algebra]]

Revision as of 05:09, 7 November 2021


A set B of vectors in a vector space V is called a basis if every element of V may be written in a unique way as a finite linear combination of elements of B.

The coefficients of this linear combination are referred to as components or coordinates of the vector with respect to B.

The elements of a basis are called basis vectors.

Equivalently, a set B is a basis if its elements are linearly independent and every element of V is a linear combination of elements of B.[1] In other words, a basis is a linearly independent spanning set.

A vector space can have several bases; however all the bases have the same number of elements, called the dimension of the vector space.

span basis of a vector linearly dependent linearly independent