Singular http://www.singular.unikl.de/forum/ 

why this syz no result http://www.singular.unikl.de/forum/viewtopic.php?f=10&t=2264 
Page 1 of 1 
Author:  bolo [ Sun Jun 23, 2013 2:49 am ] 
Post subject:  why this syz no result 
in the book introduction to groebner bases page 178 i input the following, syz is only 0, it said using degrevlex , x>y>z ring r = 0,(x,y,z),dp module MD = [1,x2+y,x*yy*z,0,0],[0,x*zy,zx,0,0],[0,0,0,x2+y,x*yy*z],[1,0,0,x*zy,zx]; module MK = syz(MD); matrix MM = MK; print(MM); module N =[x2+y,x*zy],[x*yy*z,zx]; quotient(N,freemodule(nrows(MK))); 
Author:  Doug [ Tue Jul 16, 2013 6:23 pm ] 
Post subject:  Re: why this syz no result 
Well, I tried this in both Singular and Macaulay2. I got a nontrivial answer in Macaulay2 given the matrix (or module) as written, but needed to transpose it to get a similar result in Singular. 
Author:  bolo [ Wed Jul 31, 2013 2:37 pm ] 
Post subject:  Re: why this syz no result 
i got nothing about this annihiliator why? if you got result, could you post your code 
Page 1 of 1  All times are UTC + 1 hour [ DST ] 
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ 