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| Ideal generated by the polynomials in a list https://www.singular.uni-kl.de/forum/viewtopic.php?f=10&t=1642 |
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| Author: | Jeff Hall [ Tue Jun 19, 2007 11:33 pm ] |
| Post subject: | Ideal generated by the polynomials in a list |
Hi, How does one cast an object of type List into an "Expression List"? I have lists of polynomials from which I need to generated ideals. But if I try, for example: > ring r=0,(x,y,z),dp; > list l = x,y,z; >l; [1]: x [2]: y [3]: z > ideal i = l; ? `ideal` = `list` is not supported ? expected `ideal` = `ideal` ? expected `ideal` = `matrix` ? error occurred in STDIN line 40: `ideal i = l ;` ? expected ideal-expression. type 'help ideal;' There must be some way to take the polynomials in an arbitrary list and construct an object that represents the ideal that they generate. But I can't figure out how. - Jeff |
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| Author: | hannes [ Fri Jun 29, 2007 1:31 pm ] |
| Post subject: | Re: ideal generated by the polynomial in a list |
ideal i=l[1..size(L)]; will create the ideal i generated by the elements of the list |
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