﻿FloatHermitianBandMatrix Class   # FloatHermitianBandMatrix Class

Class FloatHermitianBandMatrix represents an Hermitian banded matrix of double-precision floating point values. An Hermitian banded matrix is an Hermitian matrix that has all its non-zero entries near the diagonal. Inheritance Hierarchy
SystemObject
CenterSpace.NMath.CoreFloatHermitianBandMatrix

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

The FloatHermitianBandMatrix type exposes the following members. Constructors
NameDescription FloatHermitianBandMatrix(FloatComplexBandMatrix)
Constructs a FloatHermitianBandMatrix instance from a square banded matrix. FloatHermitianBandMatrix(FloatComplexTriDiagMatrix)
Constructs a FloatHermitianBandMatrix instance from a square tridiagonal matrix. FloatHermitianBandMatrix(Int32, Int32)
Constructs a FloatHermitianBandMatrix instance with the specified number of rows, columns, and half bandwidth. FloatHermitianBandMatrix(FloatComplexMatrix, Int32)
Constructs a FloatHermitianBandMatrix instance by extracting the Hermitian part of a band of entries from a square matrix. FloatHermitianBandMatrix(FloatComplexVector, Int32, Int32)
Constructs a FloatHermitianBandMatrix instance with the specified dimensions and half bandwidth using the data in the passed vector.
Top Properties
NameDescription Bandwidth
Gets the bandwidth of the matrix. Cols
Gets the number of columns in the matrix. DataVector
Gets the data vector referenced by this matrix. HalfBandwidth
Gets the half bandwidth of the matrix. Item
Gets and sets the value at the specified position. Order
Gets the order of the matrix (the number of rows and columns). Rows
Gets the number of rows in the matrix.
Top Methods
NameDescription  Add Clone
Creates a deep copy of this matrix. DeepenThisCopy
Guarantees that there is only one reference to the underlying data and that this data is in contiguous storage.  Divide(FloatComplex, FloatHermitianBandMatrix)
Divides a scalar by the non-zero elements of a banded matrix.  Divide(FloatHermitianBandMatrix, FloatComplex)
Divides the non-zero elements of a banded matrix by a scalar.  Divide(FloatHermitianBandMatrix, FloatHermitianBandMatrix)
Divides a banded matrix by another. Equals
Tests for equality of this matrix and another matrix. Two matrices are equal if they have the same dimensions, upper bandwidth and all values are equal.
(Overrides ObjectEquals(Object).) GetHashCode
Returns an integer hash code for this matrix.
(Overrides ObjectGetHashCode.) IsDiagonalReal
Determines if the main diagonal elements are real values. LeadingSubmatrix
Returns the k by k upper left corner of the matrix. MakeDiagonalReal
Sets the imaginary parts on the main diagonal to zero thereby meeting the strict definition of an Hermitian banded matrix.  Multiply(FloatComplex, FloatHermitianBandMatrix)
Multiplies the non-zero elements of a banded matrix by a scalar.  Multiply(FloatHermitianBandMatrix, FloatComplex)
Multiplies the non-zero elements of a banded matrix and a scalar.  Multiply(FloatHermitianBandMatrix, FloatHermitianBandMatrix)
Multiplies two banded matrices.  Negate
Negation operator. Resize(Int32)
Changes the dimensions of this matrix to those specified, adding zeros or truncating as necessary. Resize(Int32, Int32)
Changes the dimensions and half bandwidth of this matrix to those specified, adding zeros or truncating as necessary. ShallowCopy
Creates a shallow copy of this matrix.  Subtract
Subtracts two banded matrices. ToGeneralMatrix
Converts this banded Hermitian matrix to a general matrix.  ToString
Returns a formatted string representation of this matrix.

ToTabDelimited

ToTabDelimited(String)

(Overrides ObjectToString.)  ToString(String)
Returns a formatted string representation of this matrix. Numbers are displayed using the specified format.

ToTabDelimited

ToTabDelimited(String)  ToTabDelimited
Returns a formatted string representation of this matrix using tabs and newlines.  ToTabDelimited(String)
Returns a formatted string representation of this matrix using tabs and newlines. Numbers are formatted using the specified format string. Transpose
Transposes the matrix.
Top Operators
NameDescription  Addition  Division(FloatComplex, FloatHermitianBandMatrix)
Divides a scalar by the non-zero elements of a Hermitian banded matrix.  Division(FloatHermitianBandMatrix, FloatComplex)
Divides the non-zero elements of a Hermitian banded matrix by a scalar.  Division(FloatHermitianBandMatrix, FloatHermitianBandMatrix)
Divides a Hermitian banded matrix by another.  Equality
Tests for equality of two Hermitian banded matrices. Two matrices are equal if they have the same dimensions, and half bandwidth, and all values are equal.  (FloatSymBandMatrix to FloatHermitianBandMatrix)
Implicitly converts a FloatSymBandMatrix instance into a FloatHermitianBandMatrix instance.  Inequality
Tests for equality of two Hermitian banded matrices. Two matrices are equal if they have the same dimensions, and half bandwidths, and all values are equal.  Multiply(FloatComplex, FloatHermitianBandMatrix)
Multiplies the non-zero elements of a Hermitian banded matrix by a scalar.  Multiply(FloatHermitianBandMatrix, FloatComplex)
Multiplies the non-zero elements of a Hermitian banded matrix and a scalar.  Multiply(FloatHermitianBandMatrix, FloatHermitianBandMatrix)
Multiplies two Hermitian banded matrices.  Subtraction
Subtracts two Hermitian banded matrices.  UnaryNegation
Negation operator.  UnaryPlus
Unary + operator. Just returns the input matrix.
Top Remarks
If hb is the half bandwidth, then the element in the ith row, jth column is defined to be zero whenever j - i > hb. or i - j > hb.
The upper triangular part of the matrix is stored in a vector, column by column (zero elements and the lower triagular part of the matrix are not stored). There are some blank entries in the data vector so the each column takes up the same number of elements, half bandwidth + 1, in the vector. For example, the following 9 by 9 matrix with half bandwidth 2,
```    | a11 a12 a13 0   0   0   0   0   0   |
| a12 a22 a23 a24   0 0   0   0   0   |
| a13 a23 a33 a34 a35 0   0   0   0   |
A = | 0   a24 a34 a44 a45 a46 0   0   0   |
| 0   0   a35 a45 a55 a56 a57 0   0   |
| 0   0   0   a46 a56 a66 a67 a68 0   |
| 0   0   0   0   a57 a67 a77 a78 a79 |
| 0   0   0   0   0   a68 a78 a88 a89 |
| 0   0   0   0   0   0   a79 a89 a99 |```
is stored in a data vector v as
```v = [x   x   a11
x   a12 a22
a13 a23 a33
a24 a34 a44
a35 a45 a55
a46 a56 a66
a57 a67 a77
a68 a78 a88
a79 a89 a99 ]```
where x denotes an unused location. See Also