 | Double |
The DoubleSymSemiPDFact type exposes the following members.
Properties| Name | Description | |
|---|---|---|
 | CholeskyFactor | Gets the upper triangular matrix U or the lower triangular matrix L in the factorization P'AP = U'U, upper triangular specified. P'AP = LL', lower triangular specified. |
| IsGood | Gets a boolean value which is true if the matrix factorization succeeded and the factorization may be used to solve equations. If this property returns false, any attempt to use the factorization to solve equations using the Solve methods will throw an exception. |
| Order | Gets the order. This is equal to the number of rows and columns of the factored symmetric A. It is also the number of rows and columns in the Cholesky factor U, if upper is specified, or L, if lower is specified. |
| P | Gets the permutation matrix P in the factorization P'AP = U'U, upper triangular specified. P'AP = LL', lower triangular specified. |
| Pivots | Gets an array of pivot indices. The row i is interchanged with row Pivots[i]. |
| Rank | Gets the rank of the factored matrix. This is the number of linearly independent columns of the factored matrix A. Using the Solve method should only be attempted when the rank is equal to the order of the factored symmeteric matrix A. |
| Tolerance |
Gets the value of the tolerance used in the factorization algorithm.
The algorithm terminates at the (k-1)th step, if the pivot is less than
or equal to C# Tolerance |
| UpperOrLowerFactors | Gets the upper of lower factors property. |
See Also