Computes an estimate of the reciprocal of the condition number of a given matrix in the 1-norm. Matrix is assumed to be Hermitian and positive definite.

Namespace:  CenterSpace.NMath.Matrix
Assembly:  NMath (in NMath.dll) Version: 5.1.0.0

Syntax

C#
public static double ConditionNumber(
	DoubleComplexTriDiagMatrix A
)
Visual Basic (Declaration)
Public Shared Function ConditionNumber ( _
	A As DoubleComplexTriDiagMatrix _
) As Double
Visual C++
public:
static double ConditionNumber(
	DoubleComplexTriDiagMatrix^ A
)

Parameters

A
Type: CenterSpace.NMath.Matrix..::.DoubleComplexTriDiagMatrix
A tridiagonal, Hermitian, positive definite matrix.

Return Value

An estimate of the reciprocal of the condition number.

Remarks

The condition number of a matrix A is:
CopyC#
kappa = ||A|| ||AInv||
 where AInv is the inverse of the matrix A. This function returns an estimate of the reciprocal of the condition number, rho = 1/kappa.

See Also