co-maintainers welcome lssndrbarbieri@gmail.com Alessandro Barbieri A rich hierarchy of matrix classes, including triangular, symmetric, and diagonal matrices, both dense and sparse and with pattern, logical and numeric entries. Numerous methods for and operations on these matrices, using 'LAPACK' and 'SuiteSparse' libraries. https://r-forge.r-project.org/tracker/?group_id=61 https://cran.r-project.org/web/packages/Matrix/Matrix.pdf https://cran.r-project.org/web/packages/Matrix/ChangeLog Martin Maechler mmaechler+Matrix@gmail.com