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| First n terms of polynomial https://www.singular.uni-kl.de/forum/viewtopic.php?f=10&t=1903 |
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| Author: | implicitcurve [ Sun Jan 23, 2011 9:35 pm ] |
| Post subject: | First n terms of polynomial |
If I have a polynomial, f, with many terms, is there a function that returns another polynomial that is the first n terms f with respect to the term order. For example, say f has 25 terms, I'd like to define a new polynomial that is the first 10 terms of f with respect to a term order. |
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| Author: | ederc [ Mon Jan 24, 2011 12:19 pm ] |
| Post subject: | Re: First n terms of polynomial |
Assume you have defined your polynomial p in SINGULAR. Then you can define an intvec v of the positions of the terms in p (w.r.t. the ordering) you want to be returned, say Code: intvec v = 1,2,3,8,12; Then you can use Code: p[v] to get the sum of the terms 1,2,3,8 and 12 of p. See also http://www.singular.uni-kl.de/Manual/la ... htm#SEC186. |
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| Author: | implicitcurve [ Mon Jan 24, 2011 10:11 pm ] |
| Post subject: | Re: First n terms of polynomial |
Thank you ederc, that is exactly what I needed. |
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