Exploració per tema "Classificació AMS::14 Algebraic geometry::14P Real algebraic and real analytic geometry"
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Counterexample to a conjecture on the algebraic limit cycles of polynomial vector fields
(2004)
Article
Accés obertIn Geometriae Dedicata 79 (2000), 101{108, Rudolf Winkel conjectured: For a given algebraic curve f = 0 of degree m > 4 there is in general no polynomial vector ¯eld of degree less than 2m ¡ 1 leaving invariant f = 0 ...