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We develop Conley's theory for multivalued maps on finite topological spaces. More precisely, for discrete-time dynamical systems generated by the iteration of a multivalued map which satisfies appropriate regularity conditions, we…

Dynamical Systems · Mathematics 2024-04-25 Jonathan Barmak , Marian Mrozek , Thomas Wanner

The Conley index of an isolated invariant set is a fundamental object in the study of dynamical systems. Here we consider smooth functions on closed submanifolds of Euclidean space and describe a framework for inferring the Conley index of…

Dynamical Systems · Mathematics 2022-06-22 Ka Man Yim , Vidit Nanda

The topological method for the reconstruction of dynamics from time series [K. Mischaikow, M. Mrozek, J. Reiss, A. Szymczak. Construction of Symbolic Dynamics from Experimental Time Series, Physical Review Letters, 82 (1999), 1144-1147] is…

Dynamical Systems · Mathematics 2022-02-03 Bogdan Batko , Konstantin Mischaikow , Marian Mrozek , Mateusz Przybylski

We propose a new framework for Conley index theory. The main feature of our approach is that we do not use the notion of index pairs. We introduce, instead, the notions of compactifiable subsets and index neighbourhoods, and formulate and…

Dynamical Systems · Mathematics 2023-12-04 Yosuke Morita

Topology based analysis of time-series data from dynamical systems is powerful: it potentially allows for computer-based proofs of the existence of various classes of regular and chaotic invariant sets for high-dimensional dynamics.…

Chaotic Dynamics · Physics 2015-02-17 Zachary Alexander , Elizabeth Bradley , James D. Meiss , Nicole Sanderson

This is a self-contained tour of the Conley index and connection matrices. The starting point is Conley's fundamental theorem of dynamical systems. There is a short stop at the necessary topological background, before we proceed to the…

Dynamical Systems · Mathematics 2019-03-07 Phillipo Lappicy

This paper concerns the computation and identification of the (homological) Conley index over the integers, in the context of discrete dynamical systems generated by continuous maps. We discuss the significance with respect to nonlinear…

Dynamical Systems · Mathematics 2023-03-14 Konstantin Mischaikow , Charles Weibel

The connection matrix is a powerful algebraic topological tool from Conley index theory that captures relationships between isolated invariant sets. Conley index theory is a topological generalization of Morse theory in which the connection…

Algebraic Topology · Mathematics 2021-06-30 Shaun Harker , Konstantin Mischaikow , Kelly Spendlove

Conley index theory is a very powerful tool in the study of dynamical systems, differential equations and bifurcation theory. In this paper, we make an attempt to generalize the Conley index to discrete random dynamical systems. And we…

Dynamical Systems · Mathematics 2007-05-23 Zhenxin Liu

The Conley index theory is a powerful topological tool for obtaining information about invariant sets in continuous dynamical systems. A key feature of Conley theory is that the index is robust under perturbation; given a continuous family…

Dynamical Systems · Mathematics 2020-09-25 Cameron Thieme

A numerical algorithm to compute the topological entropy of multimodal maps is proposed. This algorithm results from a closed formula containing the so-called min-max symbols, which are closely related to the kneading symbols. Furthermore,…

Dynamical Systems · Mathematics 2022-04-13 José M. Amigó , Angel Giménez

In this paper, an estimation of lower bound of topological entropy for coupled-expanding systems associated with transition matrices in compact Hausdorff spaces is given. Estimations of upper and lower bounds of topological entropy for…

Dynamical Systems · Mathematics 2015-06-04 Hua Shao , Yuming Shi , Hao Zhu

We derive an algorithm to determine recursively the lap number (minimal number of monotone pieces) of the iterates of unimodal maps of an interval with free end-points. The algorithm is obtained by the sign analysis of the itineraries of…

Chaotic Dynamics · Physics 2016-08-14 Rui Dilão , José Amigó

In a previous work, the author established a nonautonomous Conley index based on the interplay between a nonautonomous evolution operator and its skew-product formulation. This index is refined to obtain a Conley index for families of…

Dynamical Systems · Mathematics 2017-11-15 Axel Jänig

A theorem is established where the computation of the discrete Conley index for zero dimensional basic sets is given with respect to the dynamical information contained in the associated structure matrices. A classification of the reduced…

Dynamical Systems · Mathematics 2015-04-16 Ketty A. de Rezende , Mariana G. Villapouca

We establish a Sharkovskii-type theorem for a class of discrete random dynamical systems via the random Conley index. Using the continuation property of the Conley index, we extend classical forcing results to random systems obtained from…

Dynamical Systems · Mathematics 2026-02-16 Isabella Alvarenga , Daniel Miranda Machado

Index maps taking values in the $K$-theory of a mapping cone are defined and discussed. The resulting index theorem can be viewed in analogy with the Freed-Melrose index theorem. The framework of geometric $K$-homology is used in a…

K-Theory and Homology · Mathematics 2016-03-11 Robin J. Deeley

This paper explores the application of automated planning to automated theorem proving, which is a branch of automated reasoning concerned with the development of algorithms and computer programs to construct mathematical proofs. In…

Artificial Intelligence · Computer Science 2023-12-12 Alice Petrov , Christian Muise

In this article, we present a constructive procedure for determining all ideals of the Borel subalgebra of a complex semisimple Lie algebra from its root system or, equivalently, its Dynkin diagram. The proposed algorithmic approach has…

Representation Theory · Mathematics 2025-03-04 Nimra Sher Asghar , Hassan Azad

Topological correctness plays a critical role in many image segmentation tasks, yet most networks are trained using pixel-wise loss functions, such as Dice, neglecting topological accuracy. Existing topology-aware methods often lack robust…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Laurin Lux , Alexander H. Berger , Alexander Weers , Nico Stucki , Daniel Rueckert , Ulrich Bauer , Johannes C. Paetzold
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