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We describe all possible topological structures of typical one-parameter bifurcations of gradient flows on the 2-sphere with holes in the case that the number of singular point of flows is at most six. To describe structures, we separatrix…

Dynamical Systems · Mathematics 2026-01-13 Illia Ovtsynov , Alexandr Prishlyak

We describe all possible topological structures of Morse flows and typical one-parametric gradient bifurcation on the M\"obius strip in the case that the number of singular point of flows is at most six. To describe structures, we use the…

Dynamical Systems · Mathematics 2024-04-12 Maria Loseva , Alexandr Prishlyak , Kateryna Semenovych , Yuliia Volianiuk

We describe all possible topological structures of typical one-parameter bifurcations of gradient flows on the 2-sphere with holes in the case that the number of singular point of flows is at most six. To describe structures, we separatrix…

Dynamical Systems · Mathematics 2023-03-28 Svitlana Bilun , Maria Loseva , Olena Myshnova , Alexandr Prishlyak

We consider structure of typical gradient flows bifurcations on closed surfaces with minimal number of singular points. There are two type of such bifurcations: saddle-node (SN) and saddle connections (SC). The structure of a bifurcation is…

Dynamical Systems · Mathematics 2024-08-21 Illia Ovtsynov , Alexandr Prishlyak

We describe all possible topological structures of Morse-Smale flows without closed trajectories on a three-dimensional sphere, which have two sources, two sinks, one saddle of Morse index 1, one saddle of Morse index 2, and no more than 10…

Geometric Topology · Mathematics 2022-09-27 Svitlana Bilun , Alexandr Prishlyak

We investigate topological propeties of flows with one singular point and without closed orbits on the 2-dimensional disk. To classify such flows, destingueshed graph is used, which is a two-colored rooted tree imbedded in the plane. We…

Dynamical Systems · Mathematics 2023-04-04 Alexandr Prishlyak , Serhii Stas

To investigate the topological structure of Morse flows on the 2-disk we use the planar graphs as destinguished graph of the flow. We assume, that the flow is transversal to the boundary of the 2-disk. We give a list of all planar graph…

Combinatorics · Mathematics 2023-05-02 Oleksandr Pryshliak

We describe all possible topological structures of codimension one gradient vector fields on the shpere with at most ten singular points. To describe structures, we use a graph whose edges are one-dimensional stable manifolds. The…

Dynamical Systems · Mathematics 2023-03-21 Svitlana Bilun , Bohdana Hladysh , Alexandr Prishlyak , Vladislav Sinitsyn

Topological equivalence of Morse-Smale flows without fixed points (NMS-flows) under assumptions of different generalities was studied in a number of papers. In some cases when the number of periodic orbits is small, it is possible to give…

Dynamical Systems · Mathematics 2023-06-16 Vladislav Galkin , Olga Pochinka , Danila Shubin

The paper is devoted to the study of topological properties, structure and classification of Morse flows with fixed points on the boundary of three-dimensional manifolds. We construct a complete topological invariant of a Morse flow,…

Geometric Topology · Mathematics 2022-09-12 Svitlana Bilun , Alexandr Prishlyak , Andrii Prus

To investigate the topological structure of Morse flows with a sink on the 2-sphere we use the planar tree as complete topological invariant of the flow. We give a list of all planar tree with at least 7 edges. We use a list of rooted…

Dynamical Systems · Mathematics 2023-05-03 Oleksandr Pryshliak

We analyse the topological (knot-theoretic) features of a certain codimension-one bifurcation of a partially hyperbolic fixed point in a flow on $\real^3$ originally described by Shil'nikov. By modifying how the invariant manifolds wrap…

Dynamical Systems · Mathematics 2016-09-07 Robert Ghrist , Todd Young

We investigate the topological structure of flows on the Girl's surfaces which is one of two possible immersions of the projective plane in three-dimensional space with one triple point of the selfintersection. First, we describe the…

Dynamical Systems · Mathematics 2022-08-23 Maria Loseva , Alexandr Prishlyak

We describe the topological structure of closed manifolds of dimension no less than four which admit Morse-Smale diffeomorphisms such that its non-wandering set contains any number of sink periodic points, and any number of source periodic…

Dynamical Systems · Mathematics 2020-03-18 V. Medvedev , E. Zhuzhoma

To investigate the topological structure of Morse flows on the 2-disk we use the planar graphs as destinguished graph of the flow. We assume, that the flow is transversal to the boundary of the 2-disk. We give a list of all planar graph…

Geometric Topology · Mathematics 2024-02-06 Oleksandr Pryshliak

In this article we consider Cherry flows on torus which have two singularities: a source and a saddle, and no periodic orbits. We show that every Cherry flow admits a unique physical measure, whose basin has full volume. This proves a…

Dynamical Systems · Mathematics 2016-05-18 Jiagang Yang

To capture the global structure of a dynamical system we reformulate dynamics in terms of appropriately constructed topologies, which we call flow topologies; we call this process topologization. This yields a description of a semi-flow in…

Algebraic Topology · Mathematics 2025-07-15 Kelly Spendlove , Robert Vandervorst

We study a topological structure of a closed $n$-manifold $M^n$ ($n\geq 3$) which admits a Morse-Smale diffeomorphism such that codimension one separatrices of saddles periodic points have no heteroclinic intersections different from…

Dynamical Systems · Mathematics 2018-04-20 Viacheslav Z. Grines , Vladislav S. Medvedev , Evgeny V. Zhuzhoma

An explicit isomorphism between Morse homology and singular homology is constructed via the technique of pseudo-cycles. Given a Morse cycle as a formal sum of critical points of a Morse function, the unstable manifolds for the negative…

Geometric Topology · Mathematics 2007-05-23 Matthias Schwarz

In this paper we consider non-singular Morse-Smale flows on closed orientable 3-manifolds, under the assumption that among the periodic orbits of the flow there is only one saddle orbit and it is twisted. It is found that any manifold…

Dynamical Systems · Mathematics 2024-05-07 Olga Pochinka , Danila Shubin
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