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pasechnik
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Post subject: linear algebra on polynomials Posted: Tue Dec 19, 2006 7:09 pm |
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Joined: Tue Dec 19, 2006 6:35 pm Posts: 1 Location: Singapore
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is there an obvious way to solve the following (easy) problem in Singular: given a finite-dimensional subspace S of homogeneous polynomials over a field F, determine whether a given polynomial g is contained in S, and, if yes, to provide an expression in generators of S. (S is given by a list f_1,..,f_k of polynomials that generate it.)
Obviously, Singular can compute whether g is contained in the ideal (f_1,...f_k), but here the problem is easier, and can be solved by building and solving a system of linear equations. So my question is how to avoid coding this myself (something that requires bookeeping of monomials present in f_i's, etc etc).
Thanks, Dmitrii
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