Zobrazeno 1 - 10
of 55
pro vyhledávání: '"SALVADOR ADDAS-ZANATA"'
Autor:
SALVADOR ADDAS-ZANATA
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 74, Iss 1, Pp 25-31 (2002)
We prove that for a large and important class of C¹ twist maps of the torus periodic and quasi-periodic orbits of a new type exist, provided that there are no rotational invariant circles (R.I.C's). These orbits have a non-zero "vertical rotation nu
Externí odkaz:
https://doaj.org/article/5f3c18856e974bbc9e20b2f6e7a0fe3d
Autor:
Salvador Addas-Zanata, Xiao-Chuan Liu
Publikováno v:
Nonlinearity. 35:5813-5851
In this paper, we study non-wandering homeomorphisms of the two-dimen-sional torus homotopic to the identity, whose rotation sets are non-trivial segments from (0, 0) to some totally irrational point (α, β). We show that for any r ⩾ 1, this rotat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0c9d59a83bf0e3522d87709068b0121
https://doi.org/10.1088/1361-6544/ac8f0d
https://doi.org/10.1088/1361-6544/ac8f0d
Autor:
Salvador Addas Zanata
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Já foi provado por diversos autores, que para sistemas Hamiltonianos em variedades de dimensão 4, a dinâmica na vizinhança de órbitas homoclínicas a equilíbrios do tipo sela-centro é essencialmente determinada por uma família a 2 parâmetros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f92ad731d9aa6be1f25b9e43a8376d3
https://doi.org/10.11606/t.45.2000.tde-20210729-115553
https://doi.org/10.11606/t.45.2000.tde-20210729-115553
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
We consider closed orientable surfaces $S$ of genus $g>1$ and homeomorphisms $f:S\rightarrow S$ isotopic to the identity. A set of hypotheses is presented, called a fully essential system of curves $\mathscr{C}$ and it is shown that under these hypot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f863eabe8633aa608211cc53eded353
https://doi.org/10.1017/etds.2019.62
https://doi.org/10.1017/etds.2019.62
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
O principal objetivo desta tese é estudar o número de rotação de fins primos de homeomorfismos planares que pertencem a uma classe de homeomorfismos H. Tal número de rotação é devido à Carathéordory e semelhante à teoria de Poincaré para
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df5d95042ad715667a171cea016ffd6c
Autor:
Salvador Addas-Zanata
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
In this paper we consider $C^\infty $-generic families of area-preserving diffeomorphisms of the torus homotopic to the identity and their rotation sets. Let $f_t:\rm{T^2\rightarrow T^2}$ be such a family, $\widetilde{f}_t:\rm I\negthinspace R^2 \rig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e6091b1533e495a122e87e968c77af4
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
In this paper we present an example of a planar diffeomorphism satisfying the generalized Markus–Yamabe conditions, which has a horseshoe. This answers negatively a belief that generically they should be Morse–Smale.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c78f2ed892b5d3b60bbcabb8d8100897
https://doi.org/10.1007/s12346-011-0043-z
https://doi.org/10.1007/s12346-011-0043-z
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
Let f be a homeomorphism of the closed annulus A that preserves the orientation, the boundary components and the Lebesgue measure. Suppose that f has a lift \({\tilde f}\) to the infinite strip \({\tilde A}\) which has zero Lebesgue measure rotation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b28033004e37a89191107ef274d117b
https://doi.org/10.1007/s12346-010-0034-5
https://doi.org/10.1007/s12346-010-0034-5
Publikováno v:
Discrete & Continuous Dynamical Systems - A. 26:795-804
Given a compact manifold $X,$ a continuous function $g:X\to \R{},$ and a map $T:X\to X,$ we study properties of the $T$-invariant Borel probability measures that maximize the integral of $g$. We show that if $X$ is a $n$-dimensional connected Riemani
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b87f3dfe36a4359ebea7e76f91282c1f
https://doi.org/10.3934/dcds.2010.26.795
https://doi.org/10.3934/dcds.2010.26.795
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
Let f f be a C r C^r -diffeomorphism of the closed annulus A A that preserves the orientation, the boundary components and the Lebesgue measure. Suppose that f f has a lift f ~ \tilde f to the infinite strip A ~ \tilde A which has zero Lebesgue measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d31826be2e4091466c27c6c0c24d8d87
https://doi.org/10.1090/s0002-9939-09-10135-1
https://doi.org/10.1090/s0002-9939-09-10135-1