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Topic review  why this syz no result 
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Re: why this syz no result 


i got nothing about this annihiliator
why?
if you got result, could you post your code
i got nothing about this annihiliator
why?
if you got result, could you post your code




Posted: Wed Jul 31, 2013 2:37 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.
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.




Posted: Tue Jul 16, 2013 6:23 pm 





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)));
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)));




Posted: Sun Jun 23, 2013 2:49 am 





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