﻿DoubleBandFact Class

# DoubleBandFact Class

Class DoubleBandFact represents the factorization of a banded matrix of double-precision floating point numbers.
Inheritance Hierarchy
SystemObject
CenterSpace.NMath.CoreDoubleBandFact

Namespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4
Syntax
```[SerializableAttribute]
public class DoubleBandFact : ICloneable```

The DoubleBandFact type exposes the following members.

Constructors
NameDescription
DoubleBandFact(DoubleBandMatrix) Constructs a DoubleBandFact instance by factoring the given matrix. By default the condition number for the matrix will not be computed and will not be available from the ConditionNumber method.
DoubleBandFact(DoubleBandMatrix, Boolean) Constructs a DoubleBandFact instance by factoring the given matrix.
Top
Properties
NameDescription
Cols Gets the number of columns in the matrix represented by the factorization.
IsGood Gets a boolean value which is true if the matrix factorization succeeded and the factorization may be used to solve equations, compute determinants, inverses, and so on; otherwise false.
IsSingular Gets a boolean value which is true if the matrix factored is singular; otherwise, false.
LowerBandwidth Gets the lower bandwidth of the factored banded matrix.
Rows Gets the number of rows in the matrix represented by the factorization.
UpperBandwidth Gets the upper bandwidth of the factored banded matrix.
Top
Methods
NameDescription
Clone Creates a deep copy of this factorization.
ConditionNumber Computes an estimate of the reciprocal of the condition number of a given matrix in the 1-norm.
ConditionNumber(NormType) Computes an estimate of the reciprocal of the condition number of a given matrix in the specified norm type.
Determinant Computes the determinant of the factored matrix.
Factor(DoubleBandMatrix) Factors the matrix A so that self represents the LU factorization of A. By default the condition number for the matrix will not be computed and will not be available from the ConditionNumber method.
Factor(DoubleBandMatrix, Boolean) Factors the matrix A so that self represents the LU factorization of A. By default the condition number for the matrix will not be computed and will not be available from the ConditionNumber method.
Inverse Computes the inverse of the factored matrix.
Solve(DoubleMatrix) Uses this factorization to solve the linear system AX = B.
Solve(DoubleVector) Uses the LU factorization of self to solve the linear system Ax = b.
Top