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implicitcurve
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Post subject: First n terms of polynomial  Posted: Sun Jan 23, 2011 9:35 pm |
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Joined: Tue Jan 13, 2009 4:25 am
Posts: 3
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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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ederc
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Post subject: Re: First n terms of polynomial Posted: Mon Jan 24, 2011 12:19 pm |
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Joined: Sun Feb 28, 2010 10:32 am
Posts: 7
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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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implicitcurve
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Post subject: Re: First n terms of polynomial Posted: Mon Jan 24, 2011 10:11 pm |
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Joined: Tue Jan 13, 2009 4:25 am
Posts: 3
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Thank you ederc, that is exactly what I needed.
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