tomas webpage

Papers

Dynamics and bifurcations in a simple quasispecies model of tumorigenesis.
Vanessa Castillo, J. Tomás Lázaro, Josep Sardanyés.
Computational and Applied Mathematics, May 2015.
DOI: 10.1007/s40314-015-0234-3 (pdf)

On the integrability of polynomial fields in the plane by means of Picard-Vessiot theory.
Primitivo B. Acosta-Humánez, J. Tomás Lázaro, Juan J. Morales-Ruiz and Chara Pantazi.
Discrete and Continuous Dynamical Systems - A, vol 35, number 5, 1767-1800, 2015. (pdf)

Abundance of attracting, repelling and elliptic periodic orbits in
two-dimensional reversible maps
Delshams A., Gonchenko S.V., Gonchenko V.S., Lázaro J.T. and Sten'kin O.
Nonlinearity, 26, 1-33, 2013. (pdf)

Upper bounds for the number of zeroes for some Abelian Integrals.
Armengol Gasull, J. Tomás Lázaro and Joan Torregrosa.
Nonlinear Analysis Series A: Theory, Methods & Appl. 75, 5169-5179, 2012. (pdf)

On the Chebyshev property for a new family of functions
Armengol Gasull, J. Tomás Lázaro and Joan Torregrosa.
J. Math. Anal. Appl. 387, 631-644, 2012. (pdf)

Some words about the application of Tchebycheff systems to weak Hilbert's 16th problem
J. Tomás Lázaro
Differential Algebra, Complex Analysis and Orthogonal Polynomials. Contemporary Mathematics, vol. 509, Amer. Math. Soc., Providence, RI, pp. 119-128 2010. (pdf)

Pseudo-normal form near saddle-center or saddle-focus equilibria
Amadeu Delshams and J. Tomás Lázaro
J. Differential Equations, 208 (2):312-343, 2005. (pdf)

A pseudo-normal form for planar vector fields
Amadeu Delshams , Antoni Guillamon and J. Tomás Lázaro
Qual. Theory Dyn. Syst., 3(1):51-82. 2002. (pdf)

Breathers in a model of a polymer with secondary structure
Michael Kastner and J. Tomás Lázaro
Abstract (ASCII file), PostScript (334 Kb), zipped version (54 Kb), 6 pages.
Proceedings of the conference on "Localization and energy transfer in nonlinear systems", San Lorenzo de El Escorial, Madrid, Spain June 17-21, 2002, L. Vázquez, Robert S. MacKay, M.P. Zorzano eds., pág. 333-338, World Scientific, ISBN 981-238-296-8, 2003.

Pseudo-normal forms and their applications
Amadeu Delshams and J. Tomás Lázaro
Dario Bambusi, Giuseppe Gaeta and Mariano Cadoni, editors. Symmetry and perturbation theory. Proceedings of the 3rd International Conference (SPT 2001) held in Cala Gonone, May 6--13, 2001 World Scientific Publishing Co., Inc., River Edge, NJ, 2001. xii+246 pp. ISBN: 981-02-4793-1.
Abstract (ASCII file), PostScript (90,4 Kb), Pdf file (98,8 Kb), zipped version (128 Kb), 5 pages.

Effective stability in reversible systems
Amadeu Delshams and J. Tomás Lázaro
C. Simó, editor, Hamiltonian Systems with Three or More Degrees of Freedom, volume 533 of NATO Adv. Sci. Inst. Ser. C Math. Phys. Sci., pp. 453-457. Kluwer, Dordrecht, 1999. MR 2000g:37088
Abstract (ASCII file), PostScript (96 Kb), zipped version (39 Kb).

Last update May 2015.