Any functions that might belong in more than one category are listed in all relevant categories. The pseudoinverse equals the inverse when mat is a non-singular square matrix. It can be non-square. The sigma matrix contains the diagonalized singular values of mat. Condition numbers can be useful for studying the propagation of errors.
Condition numbers can be useful for studying the propagation of errors.
This is a program, unlike the other components of this package. When it ends, it displays the Gr bner basis. If the Gr bner basis reduces to 1, the nonlinear system in polylist has no solution. Sort works only for non-complex numeric elements. This can affect the form as well.