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pro vyhledávání: '"Portela, Aldo"'
In this paper we consider codes in $\mathbb{F}_q^{s\times r}$ with packing radius $R$ regarding the NRT-metric (i.e. when the underlying poset is a disjoint union of chains with the same length) and we establish necessary condition on the parameters
Externí odkaz:
http://arxiv.org/abs/2302.11738
Autor:
Iglesias, Jorge, Portela, Aldo
We will construct an action $\Phi$, C0 and C1-stable and we will prove that every C0-stable action acting in a manifold of dimensions greater or equal to two, have the shadowing property.
Comment: 11 pages, 3 figures
Comment: 11 pages, 3 figures
Externí odkaz:
http://arxiv.org/abs/1908.05299
Autor:
Iglesias, Jorge, Portela, Aldo
For the free group $F_2$ acting in $S^{1}$, we will prove that if the minimal set for the action is not a Cantor set, then the action does not have the shadowing property. We will also construct an example, whose minimal set is a Cantor set, that it
Externí odkaz:
http://arxiv.org/abs/1906.06394
Akademický článek
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We exhibit different examples of minimal sets for an IFS of homeomorphisms with rotation number equal to 0. It is proved that these examples are, from a topological point of view, the unique possible cases.
Externí odkaz:
http://arxiv.org/abs/1610.07517
Autor:
Iglesia, Jorge, Portela, Aldo
The aim of this work is to exhibit an example of an endomorphism of $\T^{2}$ which is $C^2$-robustly transitive but not $C^1$-robustly transitive.
Externí odkaz:
http://arxiv.org/abs/1606.07048
Akademický článek
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Let $f$ be a covering map of the open annulus $A= S^1\times (0,1)$ of degree $d$ , $|d|>1$. Assume that $f$ preserves an essential (i.e not contained in a disk of $A$) compact subset $K$. We show that $f$ has at least the same number of periodic poin
Externí odkaz:
http://arxiv.org/abs/1411.5565
We address the problem of giving necessary and sufficient conditions in order to have robustly transitive endomorphisms admitting persistent critical sets. We exhibit different type of open examples of robustly transitive maps in any isotopic class o
Externí odkaz:
http://arxiv.org/abs/1408.1661
It is often the case that a covering map of the open annulus is semiconjugate to a map of the circle of the same degree. We investigate this possibility and its consequences on the dynamics. In particular, we address the problem of the classification
Externí odkaz:
http://arxiv.org/abs/1402.2317