[sage-devel] Re: coercion in the developer's guide

2009-06-17 Thread benjamin antieau
Thanks, I had definitely missed that this was now in the reference manual. Ben On Jun 17, 12:50 pm, John H Palmieri wrote: > Right now, the coercion section of Developer's guide starts off by > saying > >   **September 2008:** Much of this material is out of date.  We are >   working on a revis

[sage-devel] Re: chain complexes over the integers are not abelian

2009-05-18 Thread benjamin antieau
Oh, and this is also the case over other base rings, like over GF(p). On May 18, 2:43 pm, benjamin antieau wrote: > I noticed the following incorrect behavior. > > sage: C=simplicial_complexes.ChessboardComplex(3,3).chain_complex() > sage: C.category() > Category of chain complex

[sage-devel] chain complexes over the integers are not abelian

2009-05-18 Thread benjamin antieau
I noticed the following incorrect behavior. sage: C=simplicial_complexes.ChessboardComplex(3,3).chain_complex() sage: C.category() Category of chain complexes over Integer Ring sage: A=C.category() sage: A.is_abelian() False As far as I can tell ChainComplexes inherits is_abelian from AbelianCat

[sage-devel] Re: Integer points on Conics

2008-01-16 Thread D. Benjamin Antieau
is in Sage should be put onto our > useful-projects-for-students list. > > John > > On 16/01/2008, D. Benjamin Antieau <[EMAIL PROTECTED]> wrote: > > Enrique, > > > > This can easily be done at the moment, assuming that you want to count > > integral points up

[sage-devel] Re: Integer points on Conics

2008-01-15 Thread D. Benjamin Antieau
Enrique, This can easily be done at the moment, assuming that you want to count integral points up to a certain height N. If you are looking for all of the points of something you know has only finitely many, I am not so sure. I hope the following ramble helps. sage: A,B,C,D,E,F=[1,0,0,0,0,-1] #

[sage-devel] Re: hodge number calculator

2008-01-14 Thread D. Benjamin Antieau
On Jan 14, 2008 8:07 AM, William Stein <[EMAIL PROTECTED]> wrote: > > On 1/14/08, John Cremona <[EMAIL PROTECTED]> wrote: > > > > I think that as more people use Sage -- especially to do highly > > nontrivial computations like this, which are likely unavailable in > > other systems -- we will get

[sage-devel] hodge number calculator

2008-01-14 Thread D. Benjamin Antieau
To all, I've created a sage file to calculate, among other things, the Hodge numbers of an arbitrary complete intersection. Attached is the .sage file. I also attempted to create a .spkg file, but it does not seem to work. Mine contains simply a .py file that the install script puts it $SAGE_ROOT/

[sage-devel] rational points in projective space

2008-01-10 Thread benjamin antieau
Below is a transcript from a SAGE session. I was playing around checking to make sure that a modification of the rational_points code gave the right answers when I noticed that there were repeats in the lists returned by rational_points(). Below I iterate through the list of rational points and co

[sage-devel] Re: NSF white paper draft - call for comments

2007-05-28 Thread benjamin antieau
A minor correction. On page 2, line -4 the word read is repeated. On May 28, 8:39 pm, David Joyner <[EMAIL PROTECTED]> wrote: > Hello Emil, SAGE developers: > > Following a suggestion of Emil Volcheck of ACM/SIGSAM and Bob Grafton > of NSF, and William and I have drafted a "white paper" on NFS f

[sage-devel] Re: sage-2.4-rc2

2007-03-25 Thread benjamin antieau
All tests passed on ubuntu 6.0.6. with sage-2.4-rc3. On Mar 24, 11:06 pm, "William Stein" <[EMAIL PROTECTED]> wrote: > I've posted a release candidate for sage-2.4 here: > > http://sage.math.washington.edu/home/was/tmp/rc/ > > It would be helpful if a few people would build this and, if that work