Universitat Autònoma de Barcelona

Universitat Autònoma de Barcelona Encontrados 4 registros  La búsqueda tardó 0.04 segundos. 
1.
17 p, 414.8 KB Centers of discontinuous piecewise smooth quasi-homogeneous polynomial differential systems / Chen, Hebai (Fuzhou University. College of Mathematics and Computer Science (China)) ; Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Tang, Yilei (Shanghai Jiao Tong University. School of Mathematical Sciences (China))
In this paper we investigate the center problem for the discontinuous piecewise smooth quasi-homogeneous but non-homogeneous polynomial differential systems. First, we provide sufficient and necessary conditions for the existence of a center in the discontinuous piecewise smooth quasi-homogeneous polynomial differential systems. [...]
2019 - 10.3934/dcdsb.2019150
Discrete and continuous dynamical systems. Series B, Vol. 24, Issue 12 (December 2019) , p. 6495-6509  
2.
13 p, 326.6 KB Cyclicity of (1,3)-switching FF type equilibria / Chen, Xingwu (Sichuan University. Department of Mathematics (China)) ; Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Zhang, Weinian (Sichuan University. Department of Mathematics (China))
Hilbert's 16th Problem suggests a concern to the cyclicity of planar polynomial differential systems, but it is known that a key step to the answer is finding the cyclicity of center-focus equilibria of polynomial differential systems (even of order 2 or 3). [...]
2019 - 10.3934/dcdsb.2019153
Discrete and continuous dynamical systems. Series B, Vol. 24, Issue 12 (December 2019) , p. 6541-6552  
3.
Coinfection in a stochastic model for bacteriophage systems / Bardina, X. (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Cuadrado, S. (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Rovira, Carles (Universitat de Barcelona. Departament de Matemàtiques i Informàtica)
BCT NO VERSIÓ 10. 06. 20.
A system modeling bacteriophage treatments with coinfections in a noisy context is analysed. We prove that in a small noise regime, the system converges in the long term to a bacteria-free equilibrium. [...]

2019 - 10.3934/dcdsb.2019158
Discrete and continuous dynamical systems. Series B, Vol. 24 Núm. 12 (december 2019) , p. 6607-6620  
4.
Boundary perturbations and steady states of structured populations / Calsina, À. (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Farkas, J. Z. (Division of Computing Science and Mathematics. University of Stirling)
BCT- NO VERSIÓ 22. 07. 2021.
In this work we establish conditions which guarantee the existence of (strictly) positive steady states of a nonlinear structured population model. In our framework, the steady state formulation amounts to recasting the nonlinear problem as a family of eigenvalue problems, combined with a fixed point problem. [...]

2019 - 10.3934/dcdsb.2019162
Discrete and continuous dynamical systems. Series B, Vol. 24 Núm. 12 (december 2019) , p. 6675-6691  

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