Noun
nullspace (plural nullspaces)
(mathematics) The kernel of a linear map between two vector spaces or two modules.
Synonym: kernel
In linear algebra, this vector is known as the kernel of the dimensional matrix, and it spans the nullspace of the dimensional matrix, which in this particular case is one-dimensional. Source: Internet
For example, both the range and kernel of a linear mapping are subspaces, and are thus often called the range space and the nullspace ; these are important examples of subspaces. Source: Internet
If the determinant is zero, then the nullspace is nontrivial. Source: Internet