# Blog

## What are the dimensions of a vector? ## How many dimensions does a vector have?

• so the general vector a is Vectors add, subtract and scale as in three dimensions. The dot product of Euclidean three-dimensional space generalizes to four dimensions as It can be used to calculate the norm or length of a vector,

## Why is the dimension of the vector space?

• The dimension of a vector space V, denoted dim(V), is the number of vectors in a basis for V . We deﬁne the dimension of the vector space containing only the zero vector 0 to be 0. In a sense, the dimension of a vector space tells us how many vectors are needed to "build" the space , thus gives us a way to compare the relative sizes of the ...

## What are vector spaces?

• A vector space (also called a linear space) is a collection of objects called vectors, which may be added together and multiplied ("scaled") by numbers, called scalars. Scalars are often taken to be real numbers, but there are also vector spaces with scalar multiplication by complex numbers, rational numbers, or generally any field.  