In a matrix organisation an employee can be assigned to work units in either or both of two different ways. As in most organisations the employee will have a more or less permanent assignment to one organisational unit with its own supervisor. Then, usually for projects or tasks of a limited duration in time, the same employee might be assigned to a team with a different supervisor along with other employees from other organisational units who would not customarily work together.
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An idempotent matrix is a matrix which gives the same matrix if we multiply with the same. in simple words,square of the matrix is equal to the same matrix. if M is our matrix,then MM=M. then M is a idempotent matrix.
Reduced matrix is a matrix where the elements of the matrix is reduced by eliminating the elements in the row which its aim is to make an identity matrix.
If an identity matrix is the answer to a problem under matrix multiplication, then each of the two matrices is an inverse matrix of the other.
Each number in the matrix is called an element of the matrix
A skew symmetric matrix is a square matrix which satisfy, Aij=-Aji or A=-At