[sage-support] Re: noncommutative algebras

2008-02-25 Thread Simon King
Dear William, On Feb 20, 9:47 pm, William Stein [EMAIL PROTECTED] wrote: On Feb 20, 2008 12:30 PM, Simon King [EMAIL PROTECTED] wrote: snip Would it be a reasonable idea to implement such method, so that copy(R) yields a ring that is isomorphic with R but has different variable names

[sage-support] Re: noncommutative algebras

2008-02-22 Thread Simon King
Dear William, On Feb 22, 1:58 am, William Stein [EMAIL PROTECTED] wrote:  If I rename it to tensor.sage (not sure if this is a good idea), Yes, that's a VERY GOOD idea.  It's really crazy to use a compiled spyx for the purposes of interfacing with the Singular interpreter via pexpect.

[sage-support] Re: noncommutative algebras

2008-02-22 Thread William Stein
On Fri, Feb 22, 2008 at 12:50 AM, Simon King [EMAIL PROTECTED] wrote: Dear William, On Feb 22, 1:58 am, William Stein [EMAIL PROTECTED] wrote: If I rename it to tensor.sage (not sure if this is a good idea), Yes, that's a VERY GOOD idea. It's really crazy to use a compiled

[sage-support] Re: noncommutative algebras

2008-02-22 Thread William Stein
On Fri, Feb 22, 2008 at 10:03 AM, John Palmieri [EMAIL PROTECTED] wrote: On Feb 22, 8:47 am, William Stein [EMAIL PROTECTED] wrote: On Fri, Feb 22, 2008 at 12:50 AM, Simon King [EMAIL PROTECTED] wrote: Dear William, On Feb 22, 1:58 am, William Stein [EMAIL

[sage-support] Re: noncommutative algebras

2008-02-22 Thread Simon King
Dear John, a brief addendum to a previous post of yours: On Feb 20, 10:22 pm, John Palmieri [EMAIL PROTECTED] wrote: By the way, is the following a bug? sage: singular.LIB('ncall.lib') sage: R=singular.ring(0,'(x1,x12,x2)','dp') sage: C=singular.matrix(3,3,'1,-1,-1, -1,1,-1, -1,-1,1')

[sage-support] Re: noncommutative algebras

2008-02-21 Thread William Stein
On Thu, Feb 21, 2008 at 4:50 PM, John Palmieri [EMAIL PROTECTED] wrote: On Feb 21, 2:18 am, Simon King [EMAIL PROTECTED] wrote: Dear John, i think i figured out how to form a tensor product of several copies of a (non-commutative) ring with itself... On Feb 20, 9:47 pm,

[sage-support] Re: noncommutative algebras

2008-02-21 Thread John Palmieri
On Feb 21, 2:18 am, Simon King [EMAIL PROTECTED] wrote: Dear John, i think i figured out how to form a tensor product of several copies of a (non-commutative) ring with itself... On Feb 20, 9:47 pm, William Stein [EMAIL PROTECTED] wrote: snip No, that would not be reasonable. [[woah,

[sage-support] Re: noncommutative algebras

2008-02-20 Thread William Stein
On Wed, Feb 20, 2008 at 1:22 PM, John Palmieri [EMAIL PROTECTED] wrote: By the way, is the following a bug? sage: singular.LIB('ncall.lib') sage: R=singular.ring(0,'(x1,x12,x2)','dp') sage: C=singular.matrix(3,3,'1,-1,-1, -1,1,-1, -1,-1,1') sage: C 1, -1,-1, -1,1, -1, -1,-1,1

[sage-support] Re: noncommutative algebras

2008-02-20 Thread Simon King
Dear John, dear William, On Feb 20, 11:45 pm, William Stein [EMAIL PROTECTED] wrote: On Wed, Feb 20, 2008 at 1:22 PM, John Palmieri [EMAIL PROTECTED] wrote: By the way, is the following a bug? sage: singular.LIB('ncall.lib') sage: R=singular.ring(0,'(x1,x12,x2)','dp') sage: