arXiv subjects

Yeison Sánchez

Publications and source records attributed to Yeison Sánchez.

3 recordsLinked to original sources

arXiv2023

On the Shadowableness of Flows With Hyperbolic Singularities

In this work we study the existence of singular flows satisfying shadowing-like properties. More precisely, we prove that if C1 -vector field on a closed manifold induces a chain-recurrent flow containing an attached hyperbolic singularity of stable or unstable index-one, then this flow cannot satisfy the shadowing property. If the manifold is non-compact, the vector field is complete and non-wandering, we prove that we prove that the existence of index-one hyperbolic singularities prevents the induced flow to satisfy the rescaled-shadowing property introduced in [6].

math.DS↗

arXiv2018

Sectional-hyperbolic lyapunov stable sets

In hyperbolic dynamics, a well-known result is: every hyperbolic Lyapunov stable set, is attracting; it's natural to wonder if this result is maintained in the sectional-hyperbolic dynamics. This question is still open, although some partial results have been presented. We will prove that all sectional-hyperbolic transitive Lyapunov stable set of codimension one of a vector field X over a compact manifold, with unique singularity Lorenz-like, which is of boundary-type, is an attractor of X.

math.DS↗

arXiv2018

Sectional connecting lemma

A hyperbolic set on a compact manifold M, satisfies the property: given two of your any points p and q, such that for all positive ε>0, there is a trajectory in the hyperbolic set from a point ε-close to p to a point ε-close to q, then there is a point in M whose α-limit is that of p and whose ω-limit is that of q. Bautista and Morales give a version of this property, for sectional-Anosov flows (vector fields whose maximal invariant set is sectional-hyperbolic), including some conditions; among them that limit the dimension of M to three. In this paper, we prove a generalization of this result, for sectional-hyperbolic sets of codimension one in high dimensions.

math.DS↗