A class of homeomorphisms on n-dimensional manifolds called Morse-Smale homeomorphisms is introduced and interrelation between their dynamics and topology of the ambient manifoilds is searched.
The eigenvalue problem for the perturbed resonant oscillator is considered. A method for constructing asymptotic solutions near the boundaries of spectral clusters using a new integral representation is proposed. The problem of calculating the averaged values of differential operators on solutions near the cluster boundaries is studied.
In this paper a unified method for studying foliations with transversal psrsbolic geometry of rank one is presented.
Ideas of Fraces' paper on parabolic geometry of rank one and of works of the author on conformal foliations
We calculate certain bigraded Betti numbers for associahedra and apply the calculation of bigraded Betti numbers for truncation polytopes to study the topology of their moment-angle manifolds. Presumably, for these two series of simple polytopes, the bigraded Betti numbers attain their minimum and maximum values among all simple polytopes of fixed dimension with a given number of facets.
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For Morse-Smale diffeomorphisms with three fixed points, one proves that the closure of separatrices are flat spheres provided the dimension of manifold is not less than six, and can be wildly embedded spheres provided the dimension of manifold is four.
We obtain a nontrivial estimate of the variance of the sum of bounded partial quotients appearing in the continued-fraction expansion of a rational number with fixed denominator. As a consequence, we obtain a law of large numbers for the sum of all partial quotients.