Theses

75 Theses found

Qualitative dynamics of planar and spatial Lotka-Volterra and Kolmogorov systems

Student:

Advisors:

Jaume Llibre, M. Victoria Otero

Defense date:

2022-07-06

Structural stability, centers and limit cycles for smooth and nonsmooth tridimensional vector fields with invariant bidimensional spheres

Student:

Ana Livia Rodero

Advisors:

Joan Torregrosa, Claudio Buzzi

Defense date:

2022-01-31

Limit cycles and critical periods for some polynomial differential equations

Student:

Iván Sánchez

Advisor:

Joan Torregrosa

Defense date:

2021-09-21

Geometrical and topological investigation of some families of quadratic differential systems possessing saddle-nodes or invariant ellipses

Student:

Marcos c. Mota

Advisors:

Joan Carles Artés, Alex C. Rezende, Regilene Oliveira

Defense date:

2021-04-19

Qualitative aspects of piecewise differential systems: Regularization, bifurcation, limit cycles and period function

Student:

Yagor Romano Carvalho

Advisors:

Armengol Gasull, Claudio A. Buzzi

Defense date:

2021-01-26

Limit cycles of small amplitude in polynomial and piecewise polynomial planar vector fields

Student:

Luiz Fernando Gouveia

Advisor:

Joan Torregrosa

Defense date:

2020-01-14

On the crossing limit cycles for piecewise linear differential systems on the plane

Student:

Jeidy Johana Jimenez Ruiz

Advisors:

Jaume Llibre, Joao Carlos Medrado

Defense date:

2019-12-05

Qualitative theory of differential equations in the plane and in the space, with emphasis on the center-focus problem and on the Lotka-Volterra systems

Student:

Valentin Ramirez

Advisor:

Jaume Llibre

Defense date:

2019-11-26

On classical results for discontinuous and constrained differential systems

Student:

Lucyjane de Almeida Silva Menezes

Advisors:

Jaume Llibre, Joao C. Medrado

Defense date:

2019-08-27

Mathematical Modelling of Pathogen Specialisation

Student:

Anel Nurtay

Advisors:

Lluís Alsedà, Santiago F. Elena Fito

Defense date:

2019-02-20

Topological Attractors Of Quasi-periodically Forced One-dimensional Maps

Student:

Zhaoyang Dong

Advisor:

Lluís Alsedà

Defense date:

2019-01-29

Invariant curves on differential systems defined in R^2 , n ≥ 2

Student:

Camila A. B. Rodrigues

Advisors:

Jaume Llibre, Regilene Oliveira

Defense date:

2019-01-17

Bifurcations of limit cycles in planar differential and piecewise differential systems

Student:

Leonardo P. C. da Cruz

Advisor:

Joan Torregrosa

Defense date:

2018-10-11

New Results in Averaging Theory and its Applications

Student:

Murilo R, Cândido

Advisor:

Jaume Llibre

Defense date:

2018-07-17

Central configurations of five bodies in the plane

Student:

José Lino Cornelio

Advisors:

Martha Alvarez, Josep Maria Cors

Defense date:

2018-07-06

Dynamics of polynomial and rational differential equations with emphasis in the Hamiltonian centers, rational potential, limits cycles and homogeneous systems

Student:

Yohanna P. Martínez

Advisors:

Jaume Llibre, Claudio Vidal

Defense date:

2018-03-15

Estudi de la dinàmica d'algunes aplicacions al pla

Student:

Mireia Llorens

Advisors:

Armengol Gasull, Víctor Mañosa

Defense date:

2017-10-09

Periodic Orbits of Differential Systems via the Averaging Theory with Special Emphasis on Hamiltonian Systems

Student:

Fatima E. Lembarki

Advisor:

Jaume Llibre

Defense date:

2016-12-16

Analytical Tools to Study the Criticality at the Outer Boundary of Potential Centers

Student:

David Rojas

Advisors:

Francesc Mañosas, Jordi Villadelprat

Defense date:

2016-07-08

The parametrisation method for invariant manifolds in lattices of skew-product systems and an entire transcendental family with a persistent Siegel disk

Student:

Ruben Berenguel

Advisors:

Núria Fagella, Ernest Fontich

Defense date:

2016-02-02

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