rowdel¶

CholeskyFactor.rowdel(k)[source]¶

Delete a row from a sparse LDL factorization.

Compute a rank-1 update of a sparse LDL factorization. This method “deletes” a row by setting the \(k^{th}\) row and column of the original matrix to the identity.

Parameters:

k (int \(\in [0, N)\)) – The row/column index to modify.

Returns:

CholeskyFactor – The current object, for method chaining.
.. versionadded:: 0.5.0