The basis in -dimensional space is called the ordered system of linearly independent vectors.
For the following description, intoduce some additional concepts.
Expression of the form:
, where − some scalars and is called linear combination of the vectors .
If there are exist the numbers such as at least one of then is not equal to zero (for example ) and the condition:
is hold, the the system of vectors − is called linear-dependent.
If the equality above is hold if and only if, all the numbers , then the system of vectors − is called linear-independent.
The basis can only be formed by the linear-independent system of vectors. The conception of linear dependence/independence of the system of vectors are closely related to the conception of.
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