Exploració per tema "Number of zeroes of real functions"
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Upper bounds for the number of zeroes for some Abelian integrals
(2012-09)
Article
Accés restringit per política de l'editorialConsider the vector field x′=−yG(x,y),y′=xG(x,y), where the set of critical points {G(x,y)=0} is formed by K straight lines, not passing through the origin and parallel to one or two orthogonal directions. We perturb it ...