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CSqMatrix.cs
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CSqMatrix.cs
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using System;
using static МатКлассы.Number;
namespace МатКлассы
{
/// <summary>
/// Квадратные комплексные матрицы
/// </summary>
public class CSqMatrix : Idup<CSqMatrix>
{
/// <summary>
/// Действительные и мнимые части комплексной матрицы
/// </summary>
public SqMatrix Re
{
get
{
SqMatrix res = new SqMatrix(matr.GetLength(0));
for (int i = 0; i < res.RowCount; i++)
for (int j = 0; j < res.RowCount; j++)
res[i, j] = matr[i, j].Re;
return res;
}
}
public SqMatrix Im
{
get
{
SqMatrix res = new SqMatrix(matr.GetLength(0));
for (int i = 0; i < res.RowCount; i++)
for (int j = 0; j < res.RowCount; j++)
res[i, j] = matr[i, j].Im;
return res;
}
}
private Complex[,] matr;
/// <summary>
/// Вернуть массив комплексных чисел исходной матрицы
/// </summary>
public Complex[,] ComplexMas
{
get
{
Complex[,] res = new Complex[this.ColCount, this.ColCount];
for (int i = 0; i < this.ColCount; i++)
for (int j = 0; j < this.ColCount; j++)
res[i, j] = new Complex(this[i, j]);
return res;
}
}
/// <summary>
/// Число строк
/// </summary>
public int RowCount => Re.RowCount;
/// <summary>
/// Число столбцов
/// </summary>
public int ColCount => Re.ColCount;
/// <summary>
/// Кубическая норма матрицы как сумма кубических норма её действительной и мнимой части
/// </summary>
public double CubeNorm => Re.CubeNorm + Im.CubeNorm;
/// <summary>
/// Индексатор
/// </summary>
/// <param name="i"></param>
/// <param name="j"></param>
/// <returns></returns>
public Complex this[int i, int j]
{ get { return this.matr[i, j]; } set { this.matr[i, j] = new Complex(value); } }
private static Complex[,] mas(SqMatrix A, SqMatrix B)
{
var res = new Complex[A.RowCount, A.ColCount];
for (int i = 0; i < A.RowCount; i++)
for (int j = 0; j < A.ColCount; j++)
res[i, j] = A[i, j] + Complex.I * B[i, j];
return res;
}
/// <summary>
/// Конструктор по двумерному комплексному массиву
/// </summary>
/// <param name="m"></param>
public CSqMatrix(Complex[,] m)
{
//double[,] re = new double[m.GetLength(0), m.GetLength(1)], im = new double[m.GetLength(0), m.GetLength(1)];
//for (int i = 0; i < m.GetLength(0); i++)
// for (int j = 0; j < m.GetLength(1); j++)
// {
// re[i, j] = m[i, j].Re;
// im[i, j] = m[i, j].Im;
// }
//Re = new SqMatrix(re);
//Im = new SqMatrix(im);
matr = m;
}
/// <summary>
/// Конструктор по двумерному действительному массиву
/// </summary>
/// <param name="m"></param>
public CSqMatrix(double[,] m)
{
//double[,] re = new double[m.GetLength(0), m.GetLength(1)], im = new double[m.GetLength(0), m.GetLength(1)];
Complex[,] tmp = new Complex[m.GetLength(0), m.GetLength(1)];
for (int i = 0; i < m.GetLength(0); i++)
for (int j = 0; j < m.GetLength(1); j++)
{
//re[i, j] = m[i, j];
//im[i, j] = 0;
tmp[i, j] = new Complex(m[i, j], 0);
}
//Re = new SqMatrix(re);
//Im = new SqMatrix(im);
matr = tmp;
}
/// <summary>
/// Конструктор по действительной и мнимой части матрицы
/// </summary>
/// <param name="R"></param>
/// <param name="I"></param>
public CSqMatrix(SqMatrix R, SqMatrix I) : this(mas(R, I)) { }
/// <summary>
/// Копирование комплексной матрицы
/// </summary>
/// <param name="M"></param>
public CSqMatrix(CSqMatrix M) : this(M.Re, M.Im) { }
//public CSqMatrix(CVectors v)
//{
// this.Re =new SqMatrix( v.Re);
// this.Im = new SqMatrix(v.Im);
//}
/// <summary>
/// Определитель матрицы
/// </summary>
public Complex Det
{
get
{
CSqMatrix matrix = new CSqMatrix(this);
Complex m = 0;
for (int j = 0; j < this.RowCount; j++)
{
for (int i = j + 1; i < this.ColCount; i++)
{
if (matrix[j, j] != 0)
{
m = matrix[i, j] / matrix[j, j];
for (int h = j; h < this.ColCount; h++)
matrix[i, h] -= m * matrix[j, h];
}
}
}
m = 1;
for (int i = 0; i < this.RowCount; i++) m *= matrix[i, i];
// PrintMatrix();
return m;
}
}
/// <summary>
/// Определитель с помощью MathNet
/// </summary>
public Complex DetByMathNet
{
get
{
var mat = this.ToSystemNumComplex();
MathNet.Numerics.LinearAlgebra.Matrix<System.Numerics.Complex> matrix = MathNet.Numerics.LinearAlgebra.Complex.DenseMatrix.OfArray(mat);
return new Complex(matrix.Determinant());
}
}
/// <summary>
/// Преобразование матрицы в комплексный массив
/// </summary>
/// <param name="M"></param>
public static explicit operator Complex[,] (CSqMatrix M) => mas(M.Re, M.Im);
/// <summary>
/// Выдать матрицу в консоль
/// </summary>
public void PrintMatrix()
{
for (int i = 0; i < this.RowCount; i++)
{
Console.Write("|| ");
for (int j = 0; j < this.ColCount; j++)
Console.Write("\t" + this[i, j] + " ");
Console.WriteLine("\t||");
}
}
/// <summary>
/// Замена колонны указанным вектором (для метода Крамера)
/// </summary>
/// <param name="ColumnNumber">Номер колонны</param>
/// <param name="newColumn">Новая колонна</param>
/// <returns></returns>
public CSqMatrix ColumnSwap(int ColumnNumber, CVectors newColumn)
{
SqMatrix R = this.Re.ColumnSwap(ColumnNumber, newColumn.Re);
SqMatrix I = this.Im.ColumnSwap(ColumnNumber, newColumn.Im);
return new CSqMatrix(R, I);
}
/// <summary>
/// Вернуть строку матрицы
/// </summary>
/// <param name="k">Номер строки, начиная от 0</param>
/// <returns></returns>
public CVectors GetLine(int k)
{
CVectors ew = new CVectors(this.ColCount);
for (int i = 0; i < ew.Degree; i++)
ew[i] = new Complex(this[k, i]);
return ew;
}
/// <summary>
/// Вернуть столбец матрицы
/// </summary>
/// <param name="k">Номер столбца, начиная от 0</param>
/// <returns></returns>
public CVectors GetColumn(int k)
{
CVectors ew = new CVectors(this.RowCount);
for (int i = 0; i < ew.Degree; i++)
ew[i] = new Complex(this[i, k]);
return ew;
}
/// <summary>
/// Переставить местами столбцы с указанными индексами, нумерация начинается с 1
/// </summary>
/// <param name="t1"></param>
/// <param name="t2"></param>
/// <returns></returns>
public void ReversColumns(int t1, int t2)
{
t1--; t2--;
//Complex[,] res = this.matr;
Complex tmp;
for (int i = 0; i < this.ColCount; i++)
{
tmp = new Complex(this.matr[i, t1]);
this.matr[i, t1] = new Complex(this.matr[i, t2]);
this.matr[i, t2] = new Complex(tmp);
}
}
/// <summary>
/// Умножить в матрице какие-то строки на число
/// </summary>
/// <param name="c">Коэффициент</param>
/// <param name="k">Массив индексов строк, индексы начинаются с 1</param>
/// <returns></returns>
public CSqMatrix MultplyRows(Complex c, params int[] k)
{
Complex[,] res = this.ComplexMas;
for (int i = 0; i < k.Length; i++)
for (int j = 0; j < this.ColCount; j++)
res[k[i] - 1, j] *= c;
return new CSqMatrix(res);
}
/// <summary>
/// Поделить строку в матрице на число
/// </summary>
/// <param name="i"></param>
/// <param name="val"></param>
public void DivByLine(int i, Complex val)
{
for (int j = 0; j < this.ColCount; j++)
matr[i, j] /= val;
}
/// <summary>
/// Отнять от строки матрицы вектор
/// </summary>
/// <param name="i"></param>
/// <param name="c"></param>
public void MinusVector(int i, CVectors c)
{
for (int j = 0; j < this.ColCount; j++)
matr[i, j] -= c[j];
}
public void Show()
{
string s;
for (int i = 0; i < RowCount; i++)
{
s = $"||{matr[i, 0]}";
for (int j = 1; j < ColCount; j++)
s += $"\t {matr[i, j]}";
s += "||";
s.Show();
}
}
/// <summary>
/// Обратная матрица по Гауссу
/// </summary>
/// <returns></returns>
public CSqMatrix Invert(bool correct = false)
{
CSqMatrix mResult = SqMatrix.E(this.ColCount);
CSqMatrix mCur = new CSqMatrix(this);
CVectors rTmp, eTmp;
for (int i = 0; i < this.ColCount; i++) //Цикл по строкам сверху-вниз
{
int max = MaxLine(i, i);
if (max != i)
{
rTmp = mCur.GetLine(max);
eTmp = mResult.GetLine(max);
mCur.MinusVector(i, rTmp * (-1));
mResult.MinusVector(i, eTmp * (-1));
//Complex y = new Complex(mCur[i, max]);
//mCur.DivByLine(i, y);
//mResult.DivByLine(i, y);
}
//Заединичить вервую строку
Complex dItem = new Complex(mCur[i, i]);
mCur.DivByLine(i, dItem);
mResult.DivByLine(i, dItem);
rTmp = mCur.GetLine(i);
eTmp = mResult.GetLine(i);
//Забить нулями вертикаль
for (int j = 0; j < this.ColCount; j++)
if (i != j)
{
Complex con = new Complex(mCur[j, i]);
mCur.MinusVector(j, rTmp * con);
mResult.MinusVector(j, eTmp * con);
}
//mCur.PrintMatrix(); Console.WriteLine();
//mResult.PrintMatrix(); Console.WriteLine();
}
if (!correct) return mResult;
return ReverseCorrect(this, mResult, 1e-16, 100);
}
/// <summary>
/// Выдаёт индекс строки, содержащей максимальный элемент по столбцу column в диапазоне rowbeg...column.Len
/// </summary>
/// <param name="rowbeg"></param>
/// <param name="column"></param>
/// <returns></returns>
private int MaxLine(int rowbeg, int column)
{
CVectors v = this.GetColumn(column);
double max = v[rowbeg].Abs, tmp;
int k = rowbeg;
for (int i = rowbeg + 1; i < v.Degree; i++)
{
tmp = v[i].Abs;
if (tmp > max)
{
max = tmp;
k = i;
}
}
return k;
}
/// <summary>
/// Обратная матрица через алглиб
/// </summary>
/// <returns></returns>
public CSqMatrix InvertAlg()
{
alglib.complex[,] res = new alglib.complex[this.ColCount, this.ColCount];
for (int i = 0; i < this.ColCount; i++)
for (int j = 0; j < this.ColCount; j++)
res[i, j] = new alglib.complex(this[i, j].Re, this[i, j].Im);
alglib.cmatrixinverse(ref res, out int ti, out alglib.matinvreport rep);
CSqMatrix m = new CSqMatrix(new Complex[this.ColCount, this.ColCount]);
for (int i = 0; i < this.ColCount; i++)
for (int j = 0; j < this.ColCount; j++)
m[i, j] = new Complex(res[i, j].x, res[i, j].y);
return m;
}
/// <summary>
/// Обратная матрица через метод из библиотеки MathNet. Когда мой метод работает хорошо, этот в половине случаев работает ещё лучше. Но когда у меня плохо, у этого лучше только на доли процентов
/// </summary>
/// <returns></returns>
public CSqMatrix InvertByMathNet()
{
System.Numerics.Complex[,] mas = new System.Numerics.Complex[this.ColCount, this.ColCount];
for (int i = 0; i < this.ColCount; i++)
for (int j = 0; j < this.ColCount; j++)
mas[i, j] = new System.Numerics.Complex(this[i, j].Re, this[i, j].Im);
MathNet.Numerics.LinearAlgebra.Matrix<System.Numerics.Complex> matrix = MathNet.Numerics.LinearAlgebra.Complex.DenseMatrix.OfArray(mas);
mas = matrix.Inverse().ToArray();
Complex[,] res = new Complex[this.ColCount, this.ColCount];
for (int i = 0; i < this.ColCount; i++)
for (int j = 0; j < this.ColCount; j++)
res[i, j] = new Complex(mas[i, j].Real, mas[i, j].Imaginary);
return new CSqMatrix(res);
}
private static MathNet.Numerics.LinearAlgebra.Matrix<System.Numerics.Complex> ToMathMas(CSqMatrix t)
{
System.Numerics.Complex[,] mas = new System.Numerics.Complex[t.ColCount, t.ColCount];
for (int i = 0; i < t.ColCount; i++)
for (int j = 0; j < t.ColCount; j++)
mas[i, j] = new System.Numerics.Complex(t[i, j].Re, t[i, j].Im);
return MathNet.Numerics.LinearAlgebra.Complex.DenseMatrix.OfArray(mas);
}
private static Complex[,] ToCompMas(MathNet.Numerics.LinearAlgebra.Matrix<System.Numerics.Complex> t)
{
System.Numerics.Complex[,] mas= t.ToArray();
Complex[,] res = new Complex[mas.GetLength(0), mas.GetLength(1)];
for (int i = 0; i < mas.GetLength(0); i++)
for (int j = 0; j < mas.GetLength(1); j++)
res[i, j] = new Complex(mas[i, j].Real, mas[i, j].Imaginary);
return res;
}
/// <summary>
/// Обращение матрицы 2х2
/// </summary>
/// <returns></returns>
public CSqMatrix Invert2()
{
Complex det = this[0, 0] * this[1, 1] - this[1, 0] * this[0, 1];
return new CSqMatrix(new Complex[,] { { this[1, 1], -this[0, 1] }, { -this[1, 0], this[0, 0] } }) / det;
}
/// <summary>
/// Обращение матрицы 4х4
/// </summary>
/// <returns></returns>
public CSqMatrix Invert4()
{
CSqMatrix A11 = new CSqMatrix(new Complex[,] { { this[0, 0], this[0, 1] }, { this[1, 0], this[1, 1] } });
CSqMatrix A12 = new CSqMatrix(new Complex[,] { { this[0, 2], this[0, 3] }, { this[1, 2], this[1, 3] } });
CSqMatrix A21 = new CSqMatrix(new Complex[,] { { this[2, 0], this[2, 1] }, { this[3, 0], this[3, 1] } });
CSqMatrix A22 = new CSqMatrix(new Complex[,] { { this[2, 2], this[2, 3] }, { this[3, 2], this[3, 3] } });
CSqMatrix C11, C12, C21, C22, A22i = A22.Invert2(), A11i = A11.Invert2();//A22.Show();
C11 = (A11 - A12 * A22i * A21).Invert2();
C22 = (A22 - A21 * A11i * A12).Invert2();
C21 = -A22i * A21 * C11;
C12 = -A11i * A12 * C22;
return new CSqMatrix(new Complex[,] {
{C11[0,0],C11[0,1],C12[0,0],C12[0,1]},
{ C11[1,0],C11[1,1],C12[1,0],C12[1,1]},
{ C21[0,0],C21[0,1],C22[0,0],C22[0,1]},
{ C21[1,0],C21[1,1],C22[1,0],C22[1,1]}
});
}
/// <summary>
/// Обратная матрица, полученная через сумму степеней
/// </summary>
public CSqMatrix InvertSum
{
get
{
//if (this.Det == 0) throw new ArithmeticException("Матрица вырождена");
CSqMatrix M = SqMatrix.E(this.ColCount);
CSqMatrix A = new CSqMatrix(this);
CVectors p = CharactPol(this);
M *= p[1];
for (int i = 2; i <= p.Degree - 1; i++)
{
M += p[i] * A;
A *= this;
}
M *= -1;
M /= p[0];
return M;
}
}
/// <summary>
/// Характеристический многочлен заданной матрицы
/// </summary>
/// <param name="M"></param>
/// <returns></returns>
private static CVectors CharactPol(CSqMatrix M)
{
CVectors p = new CVectors(M.ColCount + 1);
Complex sum;
CSqMatrix A = new CSqMatrix(M);
//заполнение массива треков
Complex[] tr = new Complex[A.ColCount];
for (int i = 0; i < A.ColCount; i++)
{
tr[i] = A.Track;
A *= M;
}
p[p.Degree - 1] = 1 * Math.Pow(-1, A.ColCount);
int k = 0;
for (int i = p.Degree - 2; i >= 0; i--)
{
sum = 0; k++;
for (int j = 0; j < k; j++) sum += tr[k - j - 1] * p[p.Degree - j - 1];
sum *= -1;
sum /= k;
p[i] = new Complex(sum);
}
return p;
}
/// <summary>
/// Уточнение обратной матрицы
/// </summary>
/// <param name="A">Исходная матрица</param>
/// <param name="Reverse">Обратная марица</param>
/// <param name="eps">Точность</param>
/// <returns></returns>
public static CSqMatrix ReverseCorrect(CSqMatrix A, CSqMatrix Reverse, double eps = 0.001, int stepcount = 1000, bool existnorm = false)
{
CSqMatrix E = new CSqMatrix(SqMatrix.E(A.RowCount)), E2 = E * 2, R = new CSqMatrix(Reverse), Rold = new CSqMatrix(Reverse);
int i = 0;//i.Show();
double epsold = (E - A * R).CubeNorm, epsnew = epsold;
//if (epsold < 1 || existnorm)
while (epsnew > eps && i < stepcount)
{
R *= (E2 - A * R);//epsold.Show();
//(E - A * R).CubeNorm.Show();
epsold = epsnew;
epsnew = (E - A * R).CubeNorm;
if (epsnew >= epsold) {/*$"{epsold} {epsnew}".Show();*/ return Rold; }
Rold = new CSqMatrix(R);
i++;
}
return R;
}
/// <summary>
/// Track матрицы
/// </summary>
public Complex Track
{
get
{
Complex sum = 0;
for (int i = 0; i < this.RowCount; i++)
sum += this[i, i];
return sum;
}
}
public CSqMatrix Transpose => new CSqMatrix(this.Re.Transpose(), this.Im.Transpose());
public Complex DetSarius
{
get
{
//Complex[] mas = new Complex[6];
//double[] re = new double[6], im = new double[6];
//mas[0] = ;
return this[0, 0] * this[1, 1] * this[2, 2] - this[2, 0] * this[1, 1] * this[0, 2] + this[2, 0] * this[0, 1] * this[1, 2] - this[1, 0] * this[0, 1] * this[2, 2] + this[1, 0] * this[2, 1] * this[0, 2] - this[0, 0] * this[2, 1] * this[1, 2];
}
}
/// <summary>
/// Дубликат
/// </summary>
public CSqMatrix dup => new CSqMatrix(this);
/// <summary>
/// Возвращает матрицу, полученную из исходной исключением строки row и столбца col (начинаются с 1)
/// </summary>
/// <param name="col"></param>
/// <param name="row"></param>
/// <returns></returns>
public CSqMatrix GetMinMat(int row, int col)
{
int k = this.ColCount - 1, i = row - 1, j = col - 1;
CSqMatrix M = new CSqMatrix(new Complex[k, k]);
int a = 0, b = 0;
for (int ii = 0; ii < k + 1; ii++)
{
if (ii != i)
{
for (int jj = 0; jj < k + 1; jj++)
{
if (jj != j)
{
M[a, b] = new Complex(this[ii, jj]); //Console.WriteLine("{0} {1} {2} {3}", a,b,ii,jj);
b++;
}
}
a++; b = 0;
}
}
return M;
}
public static CSqMatrix operator +(CSqMatrix A, CSqMatrix B)// => new CSqMatrix(A.Re + B.Re, A.Im + B.Im);
{
Complex[,] mat = new Complex[A.RowCount, A.RowCount];
for (int i = 0; i < A.RowCount; i++)
for (int j = 0; j < A.RowCount; j++)
mat[i, j] = A[i, j] + B[i, j];
return new CSqMatrix(mat);
}
public static CSqMatrix operator -(CSqMatrix A) => new CSqMatrix(new SqMatrix((-A.Re).matrix), new SqMatrix((-A.Im).matrix));
public static CSqMatrix operator -(CSqMatrix A, CSqMatrix B)// => new CSqMatrix(A.Re - B.Re, A.Im - B.Im);
{
Complex[,] mat = new Complex[A.RowCount,A.RowCount];
for (int i = 0; i < A.RowCount; i++)
for (int j = 0; j < A.RowCount; j++)
mat[i, j] = A[i, j] - B[i, j];
return new CSqMatrix(mat);
}
public static CSqMatrix operator *(CSqMatrix A, CSqMatrix B) => new CSqMatrix(A.Re * B.Re - A.Im * B.Im, A.Re * B.Im + B.Re * A.Im);
public static CVectors operator *(CSqMatrix A, CVectors x)
{
CVectors res = new CVectors(x.Degree);
for (int i = 0; i < res.Degree; i++)
for (int j = 0; j < res.Degree; j++)
res[i] += A[i, j] * x[j];
return res;
//if (A.ColCount != x.Degree) throw new Exception("Размерность матрицы и вектора не совпадают");
//CVectors res = new CVectors(x.Degree);
//for (int i = 0; i < res.Degree; i++)
// res[i] = A.GetLine(i) * x;
//return res;
}
public static CSqMatrix operator *(Complex c, CSqMatrix A)
{
//CSqMatrix R = new CSqMatrix(A);R.Show();
//for (int i = 0; i < R.ColCount; i++)
// for (int j = 0; j < R.RowCount; j++)
// R[i, j] = R[i,j]*c;R.Show();"".Show();
//return R;
return new CSqMatrix(A.Re * c.Re - A.Im * c.Im, A.Re * c.Im + c.Re * A.Im);
}
public static CSqMatrix operator *(CSqMatrix A, Complex c) => c * A;
public static CSqMatrix operator /(CSqMatrix A, Complex c) => (1.0/c) * A;
/// <summary>
/// Ускоренное отнятие другой матрицы от исходной
/// </summary>
/// <param name="M"></param>
public void FastLessen(CSqMatrix M)
{
for (int i = 0; i < this.RowCount; i++)
for (int j = 0; j < this.RowCount; j++)
this.matr[i, j].FastLessen(M[i, j]);
}
/// <summary>
/// Ускоренное добавление другой матрицы от исходной
/// </summary>
/// <param name="M"></param>
public void FastAdd(CSqMatrix M)
{
//var c = ToMathMas(this);
//var r = ToMathMas(M);
//var m = c + r;
//this.matr = ToCompMas(m);
for (int i = 0; i < this.RowCount; i++)
for (int j = 0; j < this.RowCount; j++)
this.matr[i, j].FastAdd(M[i, j]);
}
public void MoveTo(CSqMatrix t)
{
throw new NotImplementedException();
}
public static implicit operator CSqMatrix(SqMatrix sq)
{
CSqMatrix res = new CSqMatrix(sq.matrix);
return res;
}
}
}