1. Combine the implementations in sage.matrix.matrix_modn_dense and sage.matrix.matrix_integer_dense to make a matrix class that stores its entries with an array of mpz_ts, does fast in place row and column operations and supports the ability to have the base ring a Quasi-DVR (so has some support for valuations of elements).

  2. Optimize determinants! In Magma, determinants for matrices over Zmod(n) are much faster than matrices over ZZ. In Sage, we need to convert to a matrix over ZZ because it's much slower!

padics/MatricesModN (last edited 2010-12-02 23:57:29 by DavidRoe)