Null, column and row space
From Conservapedia
In mathematics a matrix can be catergorised by its null, column and to a lesser extent its column space. These are all vector spaces asscoiated with a particular matrix.
Null space
The null space of a 
matrix A is as,
.
The null space is all so known as the solution space.
Column space
The column space is the vector space formed by the span of the columns of the matrix A.
Row Space
The rows space is the vector space formed by the span of the rows of the matrix A.
