Реализация гомеоморфизмов поверхностей алгебраически конечного порядка диффеоморфизмами Морса-Смейла с ориентируемым гетероклиническим пересечением
According to Thurston's classification, the set of homotopy classes of homeomorphisms defined on closed orientable surfaces of negative curvature is split into four disjoint subsets. A homotopy class from each subset is characterized by the existence in it of a homeomorphism called the Thurston canonical form and which is exactly one of the following types, respectively: a periodic homeomorphism, reducible nonperiodic homeomorphism of algebraically finite order, a reducible homeomorphism that is not a algebraically finite order homeomorphism, a pseudo-anosov homeomorphism. Thurston's canonical forms are not structurally stable diffeomorphisms. Therefore, the problem naturally arises of constructing the simplest (in a certain sense) structurally stable diffeomorphisms in each homotopy class. In each homotopy class from the first subset A.N. Bezdezhnykh and V.Z. Grines constructed a gradient-like diffeomorphism. R.V. Plykin and A. Yu. Zhirov announced a method for constructing a structurally stable diffeomorphism in each homotopy class from the fourth subset. The non-wandering set of this diffeomorphism consists of a finite number of source orbits and a single one-dimensional attractor. In this paper, we describe the construction of a structurally stable diffeomorphism in each homotopy class from the second subset. The constructed representative is a Morse-Smale diffeomorphism with an orientable heteroclinic intersection.