Displaying similar documents to “On a Special Class of Non Complete Webs”

Separating polynomials on Banach spaces.

R. Gonzalo, J. A. Jaramillo (1997)

Extracta Mathematicae

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In this paper we survey some recent results concerning separating polynomials on real Banach spaces. By this we mean a polynomial which separates the origin from the unit sphere of the space, thus providing an analog of the separating quadratic form on Hilbert space.

On the computation of the minimal polynomial of a polynomial matrix

Nicholas Karampetakis, Panagiotis Tzekis (2005)

International Journal of Applied Mathematics and Computer Science

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The main contribution of this work is to provide two algorithms for the computation of the minimal polynomial of univariate polynomial matrices. The first algorithm is based on the solution of linear matrix equations while the second one employs DFT techniques. The whole theory is illustrated with examples.

Sufficient conditions for the existence of a center in polynomial systems of arbitrary degree.

Hector Giacomini, Malick Ndiaye (1996)

Publicacions Matemàtiques

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In this paper, we consider polynomial systems of the form x' = y + P(x, y), y' = -x + Q(x, y), where P and Q are polynomials of degree n wihout linear part. For the case n = 3, we have found new sufficient conditions for a center at the origin, by proposing a first integral linear in certain coefficient of the system. The resulting first integral is in the general case of Darboux type. By induction, we have been able to generalize these results for polynomial...