Zobrazeno 1 - 10
of 125
pro vyhledávání: '"S. Garcia-Ferreira"'
Autor:
S. Garcia-Ferreira, I. Vidal-Escobar
Publikováno v:
Semigroup Forum. 103:867-878
The Ellis semigroup of a discrete dynamical system (X, f) is denoted by E(X, f). We only consider surjective continuous functions $$f:[0,1]\rightarrow [0,1]$$ such that $$\{ f^n : n\in {\mathbb {N}}\}$$ is infinite. The main result asserts that the E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d77b01c1146da759dd43374fd9c7abb
https://doi.org/10.1007/s00233-021-10225-7
https://doi.org/10.1007/s00233-021-10225-7
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
A weak selection on ℝ {\mathbb{R}} is a function f : [ ℝ ] 2 → ℝ {f\colon[\mathbb{R}]^{2}\to\mathbb{R}} such that f ( { x , y } ) ∈ { x , y } {f(\{x,y\})\in\{x,y\}} for each { x , y } ∈ [ ℝ ] 2 {\{x,y\}\in[\mathbb{R}]^{2}} . In this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a18591d5c0ffb3f2f7c66837d54e70a
https://doi.org/10.1515/jaa-2019-0003
https://doi.org/10.1515/jaa-2019-0003
Publikováno v:
Banach Journal of Mathematical Analysis. 15
A well-known application of the Ramsey Theorem in the Banach Space Theory is the proof of the fact that every normalized basic sequence has a subsequence which generates a spreading model (the Brunel-Sucheston Theorem). Based on this application, as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::147510ef84ac3c0ea0915da8cfbdfc49
https://doi.org/10.1007/s43037-021-00130-0
https://doi.org/10.1007/s43037-021-00130-0
Publikováno v:
Topology and its Applications. 234:285-297
Given compact spaces X and Y, if X is Eberlein compact and C p , n ( X ) is homeomorphic to C p , n ( Y ) for some natural n, then Y is also Eberlein compact; this result answers a question posed by Tkachuk. Assuming existence of a Souslin line, we g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3facd8226fdb196a8cf25ef92497624
https://doi.org/10.1016/j.topol.2017.11.032
https://doi.org/10.1016/j.topol.2017.11.032
Autor:
Osvaldo Guzmán, S. Garcia-Ferreira
Publikováno v:
Topology and its Applications. 305:107871
We prove that, under the assumption of CH , for every MAD family A there is a P-point U such that the Franklin compact space associated to A is a Frechet-Urysohn space ( FU ( U ) -space). This solves a 25 years old question of V. I. Malykhin and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4998a9ec35267d70c9f4e910ddf67bca
https://doi.org/10.1016/j.topol.2021.107871
https://doi.org/10.1016/j.topol.2021.107871
Publikováno v:
Topology and its Applications. 301:107505
In this paper, we shall consider the hyperspace of all nontrivial convergent sequences S c ( X ) of a Frechet-Urysohn nondiscrete space X, which is equipped with the Vietoris topology. We study the spaces X for which S c ( X ) is Baire: this kind of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4565d7c4378d1eca544d552c888487a7
https://doi.org/10.1016/j.topol.2020.107505
https://doi.org/10.1016/j.topol.2020.107505
Autor:
C. Yescas-Aparicio, S. Garcia-Ferreira
Publikováno v:
Topology and its Applications. 301:107504
It is know that the Valdivia compact spaces can be characterized by a special family of retractions called r-skeleton (see [10] ). Also we know that there are compact spaces with r-skeletons which are not Valdivia. In this paper, we shall study r-ske
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d73574991e3e5b78af79779e46280001
https://doi.org/10.1016/j.topol.2020.107504
https://doi.org/10.1016/j.topol.2020.107504
Publikováno v:
Semigroup Forum. 97:162-176
Let E(X, f) be the Ellis semigroup of a dynamical system (X, f) where X is a compact metric space. We analyze the cardinality of E(X, f) for a compact countable metric space X. A characterization when E(X, f) and $$E(X,f)^* = E(X,f) \setminus \{ f^n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8416151cf06b91cf0412531971b41695
https://doi.org/10.1007/s00233-017-9888-z
https://doi.org/10.1007/s00233-017-9888-z
Autor:
S. Garcia-Ferreira, J.E. Rivera-Gómez
Publikováno v:
Topology and its Applications. 225:90-102
A filter F on ω is called Frechet–Urysohn if the space with only one non-isolated point ω ∪ { F } is a Frechet–Urysohn space, where the neighborhoods of the non-isolated point are determined by the elements of F . In this paper, we distinguis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71dbde05dafbe81f3330b094dadc6dfe
https://doi.org/10.1016/j.topol.2017.04.015
https://doi.org/10.1016/j.topol.2017.04.015
Publikováno v:
Topology and its Applications. 219:90-110
In this paper we improve several results presented in [7] and in [9] related to the characterization of several kinds of pseudocompleteness and compactness properties in spaces of continuous functions of the form C p ( X , Y ) . In particular, we pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e181da3ea5c610830d53b287c019521
https://doi.org/10.1016/j.topol.2017.01.007
https://doi.org/10.1016/j.topol.2017.01.007