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Related papers: Morse moves in flow categories

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Let $f:M\to \mathbb{R}$ be a Morse function on a connected compact surface $M$, and $\mathcal{S}(f)$ and $\mathcal{O}(f)$ be respectively the stabilizer and the orbit of $f$ with respect to the right action of the group of diffeomorphisms…

Geometric Topology · Mathematics 2014-11-26 Sergiy Maksymenko , Bohdan Feshchenko

We complete the theoretical framework required for the construction of a Morse homology theory for certain types of forced mean curvature flows. The main result of this paper describes the asymptotic behaviour of these flows as the forcing…

Differential Geometry · Mathematics 2016-01-15 Graham Smith

We prove that the topological flow category $\mathcal{M}$ arising from a Morse-Smale pair $(f,\xi)$ on a smooth closed manifold $X$ is equivalent, as an $\infty$-category, to Lurie's $\infty$-category $\mathrm{Sing}_A(X)$ of exit paths in…

Algebraic Topology · Mathematics 2026-05-27 Colin Fourel

We use Moser's normal forms to study chaotic motion in two-degree hamiltonian systems near a saddle point. Besides being convergent, they provide a suitable description of the cylindrical topology of the chaotic flow in that vicinity. Both…

chao-dyn · Physics 2015-06-24 Werner M. Vieira , Alfredo M. O. de Almeida

Morse decompositions partition the flows in a vector field into equivalent structures. Given such a decomposition, one can define a further summary of its flow structure by what is called a connection matrix.These matrices, a generalization…

Dynamical Systems · Mathematics 2025-07-31 Tamal K. Dey , Michał Lipiński , Andrew Haas

In this paper we introduce a new compactness condition - Property (C) - for flows in (not necessary locally compact) metric spaces. For such flows a Conley type theory can be developed. For example (regular) index pairs always exist for…

Dynamical Systems · Mathematics 2016-12-19 Marek Izydorek , Thomas O. Rot , Maciej Starostka , Marcin Styborski , Robert C. A. M. Vandervorst

Let $f$ be a Morse function on a closed manifold $M$, and $v$ be a Riemannian gradient of $f$ satisfying the transversality condition. The classical construction (due to Morse, Smale, Thom, Witten), based on the counting of flow lines…

Differential Geometry · Mathematics 2007-05-23 A. Pajitnov

The counting function on the natural numbers defines a discrete Morse-Smale complex with a cohomology for which topological quantities like Morse indices, Betti numbers or counting functions for critical points of Morse index are explicitly…

Combinatorics · Mathematics 2016-08-25 Oliver Knill

In this paper, we construct cochain complexes generated by the cohomology of critical manifolds in the abstract setup of flow categories for Morse-Bott theories under minimum transversality assumptions. We discuss the relations between…

Symplectic Geometry · Mathematics 2024-07-10 Zhengyi Zhou

Parallel shear flows come with continuous symmetries of translation in the downstream and spanwise direction. As a consequence, flow states that differ in their spanwise or downstream location but are otherwise identical are dynamically…

Fluid Dynamics · Physics 2014-07-21 Tobias Kreilos , Stefan Zammert , Bruno Eckhardt

We present a new approach to Morse and Novikov theories, based on the deRham Federer theory of currents, using the finite volume flow technique of Harvey and Lawson. In the Morse case, we construct a noncompact analogue of the Morse…

Differential Geometry · Mathematics 2007-05-23 Reese F. Harvey , G. Minervini

This paper provides a unified framework connecting dynamical systems with tools from topological data analysis and geometric topology and inspires new interactions among dynamical systems, topology, and nonlinear analysis. To this end, we…

Dynamical Systems · Mathematics 2025-12-03 Tomoo Yokoyama

By the method of discrete Morse flows, we construct an energy reducing multiple-valued function flow. The flow we get is Holder continuous with respect to the L-2 norm. We also give another way of constructing flows in some special cases,…

Analysis of PDEs · Mathematics 2007-05-23 Wei Zhu

We construct topological invariants, called abstract weak orbit spaces, of flows and homeomorphisms on topological spaces, to describe both gradient dynamics and recurrent dynamics. In particular, the abstract weak orbit spaces of flows on…

Dynamical Systems · Mathematics 2020-12-03 Tomoo Yokoyama

We prove that the category of flows cannot be the underlying category of a model category whose corresponding homotopy types are the flows up to weak dihomotopy. Some hints are given to overcome this problem. In particular, a new approach…

Algebraic Topology · Mathematics 2021-08-24 Philippe Gaucher

In~\cite{rotvandervorst} a homology theory --Morse-Conley-Floer homology-- for isolated invariant sets of arbitrary flows on finite dimensional manifolds is developed. In this paper we investigate functoriality and duality of this homology…

Dynamical Systems · Mathematics 2015-02-04 T. O. Rot , R. C. A. M. Vandervorst

In this article, we use concepts and methods from the theory of simplicial sets to study discrete Morse theory. We focus on the discrete flow category introduced by Vidit Nanda, and investigate its properties in the case where it is defined…

Algebraic Topology · Mathematics 2025-03-05 Bjørnar Gullikstad Hem

Implementing an idea due to John Baez and James Dolan we define new invariants of Whitney stratified manifolds by considering the homotopy theory of smooth transversal maps. To each Whitney stratified manifold we assign transversal homotopy…

Algebraic Topology · Mathematics 2009-10-20 Jonathan Woolf

In this paper, we develop the notion of a Morse sequence, which provides an alternative approach to discrete Morse theory, and which is both simple and effective. A Morse sequence on a finite simplicial complex is a sequence composed solely…

Discrete Mathematics · Computer Science 2025-01-13 Gilles Bertrand

Following \cite{citeSavelyevVirtualMorsetheoryon$Omega$Ham$(Momega)$.}, we develop here a connection between Morse theory for the (positive) Hofer length functional $L: \Omega \text {Ham}(M, \omega) \to \mathbb{R}$, with Gromov-Witten/Floer…

Symplectic Geometry · Mathematics 2014-04-22 Yasha Savelyev