[sage-devel] Re: Special-purpose code for integer factorization?

2010-07-09 Thread Lloyd Kilford
the combinatorics functionality that MAGMA users want. Lloyd. On 9 July, 14:33, Simon King wrote: > Hi! > > On Jul 9, 12:39 pm, Lloyd  Kilford wrote: > > > ... > > There is a significant difference here. > > Not good. > > Unfortunately, using _factor_cunningham wo

[sage-devel] Special-purpose code for integer factorization?

2010-07-09 Thread Lloyd Kilford
So in Bart de Smit's talk at Sage Days 23 he gave in an example the integer 103^100-1 which had to be factored in order to proceed. There is a very interesting difference between the performance of Sage 4.4 and Magma 2.15-4 here: sage: time factor(103^100-1) CPU times: user 270.59 s, sys: 0.64 s,

[sage-devel] Dimensions of Atkin-Lehner eigenspaces on modular forms

2010-07-01 Thread Lloyd Kilford
Dear all, At Sagedays 16 David Kohel gave a talk about ECHIDNA, which is a database of open-source code for MAGMA, and invited people to port it to SAGE. I am planning to port his code for computing dimensions of eigenspaces of the Atkin-Lehner operator to SAGE (he has released this under the GPL)

[sage-devel] version 3.4 and 3.4.1 fail to run under VMware

2009-04-24 Thread Lloyd Kilford
I have downloaded the images of versions 3.4 and 3.4.1 to run under VMware, but I get the following error message when I try to run sage: WARNING: This Sage install was built on a machine that supports instructions that are not available on this computer ... The following processor flags were on