Algorithm 849: A concise sparse Cholesky factorization package Conference Paper uri icon


  • The LDL software package is a set of short, concise routines for factorizing symmetric positive-definite sparse matrices, with some applicability to symmetric indefinite matrices. Its primary purpose is to illustrate much of the basic theory of sparse matrix algorithms in as concise a code as possible, including an elegant method of sparse symmetric factorization that computes the factorization row-by-row but stores it column-by-column. The entire symbolic and numeric factorization consists of less than 50 executable lines of code. The package is written in C, and includes a MATLAB interface.

published proceedings


author list (cited authors)

  • Davis, T. A.

citation count

  • 62

complete list of authors

  • Davis, TA