Degtyarev, A. I.Zvonilov, V. I.2016-02-082016-02-0819990001-4346http://hdl.handle.net/11693/25186A rigid isotopy of nonsingular real algebraic curves on a quadric is a path in the space of such curves of a given bidegree. We obtain the rigid isotopy classification of nonsingular real algebraic curves of bidegree (3,3) on a hyperboloid and on an ellipsoid. We also study the space of real algebraic curves of bidegree (3, 3) with a single node or cusp. ©2000 Kluwer Academic/Plenum Publishers.EnglishReal algebraic curveQuadricBidegreeRigid isotopyReal schemeNodeCuspHyperboloidEllipsoidTorusOvalChamberWallBlow upArticle10.1007/BF02674324