On 5/29/08, Joerg Arndt <arndt@jjj.de> wrote:
SAGE: Open Source Mathematics Software http://www.sagemath.org/ http://en.wikipedia.org/wiki/Software_for_Algebra_and_Geometry_Experimentati...
comes at a very reasonable price: zero
SAGE has some mechanism to permit simultaneous access to a raft of different systems, including MAGMA (if installed), and PARI etc (incorporated in the download). I can't get much of a grip on how effectively this arrangement might work in practice --- has anybody here actually tried it out? I have found MAGMA robust and efficient for the specialised areas it addresses. But its strong typing induces a steep learning curve: for adults only! Also it runs two orders of magnitude faster on a recent high-end PC than on a G4 Mac --- similar discrepancies may well arise with other CAS, though I doubt if they're so pronounced! Fred Lunnon