Zobrazeno 1 - 10
of 20
pro vyhledávání: '"José Barbosa Gomes"'
Publikováno v:
Geometriae Dedicata. 217
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46a3f4409684cc9c68e256f1740f4a64
https://doi.org/10.1007/s10711-023-00771-5
https://doi.org/10.1007/s10711-023-00771-5
Autor:
Mariana Barbosa Lopes, Vitória Karollinne Maria José Barbosa Gomes De Moraes Primeira, Emilli Pietra Jardini, Giovana Perez De Souza, Joao Victor Salvador
Publikováno v:
Anais do I Congresso Brasileiro de Doenças Infectocontagiosas On-line.
Introdução: A Sífilis Congênita (SC) é uma doença decorrente da disseminação hematogênica do Treponema pallidum em gestantes sem adesão ao tratamento ou inadequadamente tratadas. Sua transmissão se dá por via transplacentária ou durante
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7428a7211ee5c83f16f00e0906dc7c5d
https://doi.org/10.51161/rems/2229
https://doi.org/10.51161/rems/2229
Autor:
José Barbosa Gomes, Magno Branco Alves
Publikováno v:
Positivity. 24:229-239
A distinguished class of polyhedral cones is considered. For a linear operator $$\mathcal {L}$$ preserving a cone in this class, we prove, under some assumption on the number of edges of the cone, that its spectrum contains exactly one strictly posit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4194220a592f2d9fa67137bd5c02f4f1
https://doi.org/10.1007/s11117-019-00675-3
https://doi.org/10.1007/s11117-019-00675-3
Publikováno v:
Qualitative Theory of Dynamical Systems. 20
We prove an upper bound for the polynomial entropy of continuous, piecewise monotone maps of the interval, according to the number of intervals of monotonicity of its iterates. We give examples that show that this inequality is sharp. As a direct con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e69f290a32560710ab8ff520f671dfe
https://doi.org/10.1007/s12346-021-00456-y
https://doi.org/10.1007/s12346-021-00456-y
Publikováno v:
Differential Geometry and its Applications. 68:101588
We show that the geodesic flow of a compact Finsler manifold without conjugate points is transitive provided that the universal covering satisfies the uniform Finsler visibility condition. This result is a nontrivial extension of a well known theorem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0263c88d005fef365c9a21103727c3ad
https://doi.org/10.1016/j.difgeo.2019.101588
https://doi.org/10.1016/j.difgeo.2019.101588
Publikováno v:
Bulletin of the Brazilian Mathematical Society, New Series. 46:621-644
We show that analytic, k-basic Finsler metrics in the two torus without conjugate points are analytically integrable, in the sense that the unit tangent bundle of the metric admits an analytic foliation by invariant Lagrangian graphs. This result, co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c44bfdd8b05389574f6de8ea392e925
https://doi.org/10.1007/s00574-015-0106-x
https://doi.org/10.1007/s00574-015-0106-x
Autor:
José Barbosa Gomes, Rafael O. Ruggiero
Publikováno v:
Nonlinearity. 26:2109-2129
We show that a C∞ k-basic Finsler metric on the two torus T2 whose geodesic flow preserves a codimension one C1,L foliation is in fact flat. Although integrable high energy levels of Hamiltonians on the torus are not flat in general, the C1,L integ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4a7ef2b27fa23a1c3ac930e3bdbde94
https://doi.org/10.1088/0951-7715/26/7/2109
https://doi.org/10.1088/0951-7715/26/7/2109
Autor:
Rafael O. Ruggiero, José Barbosa Gomes
Publikováno v:
Ergodic Theory and Dynamical Systems. 33:455-474
If (M,F) is a C4 compact Finsler surface of genus at least two without conjugate points, we show that the first integrals of the geodesic flow are constant. Using this fact, we show that if (M,F) is also of Landsberg type then (M,F) is Riemannian. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55eaff08e01dc449d8f2a53c3d97ffc4
https://doi.org/10.1017/s0143385711001027
https://doi.org/10.1017/s0143385711001027
Autor:
José Barbosa Gomes, Rafael O. Ruggiero
Publikováno v:
Comptes Rendus Mathematique. 346:313-316
Let ϕ t : T 1 M → T 1 M be the magnetic flow of the pair ( g , Ω ) . We show that if ϕ t preserves a C 2 , 1 codimension one foliation then ( M , g ) has constant, nonpositive Gaussian curvature and Ω is a constant multiple of the area form of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::390bedb9e584254dd38e77330d5390eb
https://doi.org/10.1016/j.crma.2008.01.011
https://doi.org/10.1016/j.crma.2008.01.011
Autor:
José Barbosa Gomes, Rafael O. Ruggiero
Publikováno v:
Proceedings of the American Mathematical Society. 135:507-515
Let S S be a closed orientable surface. Assume that there exists a codimension one foliation F \mathcal F of class C 3 C^3 in the unit tangent bundle of S S , whose leaves are invariant under the geodesic flow of S S . Then, the curvature of S S is a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d66573146ea47e6d4a8f6d4d294c96c
https://doi.org/10.1090/s0002-9939-06-08755-7
https://doi.org/10.1090/s0002-9939-06-08755-7