Hi everyone, I am pleased to announce hmatrix-static[1], a thin wrapper over Alberto Ruiz's excellent hmatrix library[2] for linear algebra. The main additions of hmatrix-static over hmatrix are: - vectors and matrices have their length encoded in their types - vectors and matrices may be constructed and destructed using view patterns, affording a clean, safe syntax. hmatrix-static includes statically-sized versions of hmatrix's linear algebra routines, including: - simple arithmetic (addition, multiplication, of matrices and vectors) - matrix inversion and least squares solutions - determinants / rank / condition number - computing eigensystems - factorisations: svd, qr, cholesky, hessenberg, schur, lu - exponents and sqrts of matrices - norms See http://code.haskell.org/hmatrix-static/examples/ for example code. Installation and requirements: Because of the use of type families and view patterns, hmatrix-static requires GHC 6.10 to build. The linear algebra routines are ultimately implemented by BLAS, GSL and LAPACK; see the hmatrix manual [3] for instructions on installing these, prior to installing hmatrix. Once this has been done, hmatrix-static can be installed by $ cabal install hmatrix-static I would be very interested in your feedback, so please try it out. Kind regards, Reiner Pope [1] http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hmatrix-static [2] http://www.hmatrix.googlepages.com/ [3] http://www.hmatrix.googlepages.com/installation