[ΒΙΒΛΙΟ][B] Applied and computational measurable dynamics

Measurable dynamics has traditionally referred to ergodic theory, which is in some sense a
sister topic to dynamical systems and chaos theory. However, the topic has until recently …

Rigorous numerics for analytic solutions of differential equations: the radii polynomial approach

A Hungria, JP Lessard, J Mireles James - Mathematics of Computation, 2016 - ams.org
Judicious use of interval arithmetic, combined with careful pen and paper estimates, leads to
effective strategies for computer assisted analysis of nonlinear operator equations. The …

Rigorous numerics for symmetric connecting orbits: Even homoclinics of the Gray–Scott equation

JB Van Den Berg, JD Mireles-James, JP Lessard… - SIAM Journal on …, 2011 - SIAM
In this paper we propose a rigorous numerical technique for the computation of symmetric
connecting orbits for ordinary differential equations. The idea is to solve a projected …

Rigorous numerics for nonlinear differential equations using Chebyshev series

JP Lessard, C Reinhardt - SIAM Journal on Numerical Analysis, 2014 - SIAM
A computational method based on Chebyshev series to rigorously compute solutions of
initial and boundary value problems of analytic nonlinear vector fields is proposed. The idea …

Computing (un) stable manifolds with validated error bounds: non-resonant and resonant spectra

JB van den Berg, JD Mireles James… - Journal of Nonlinear …, 2016 - Springer
We develop techniques for computing the (un) stable manifold at a hyperbolic equilibrium of
an analytic vector field. Our approach is based on the so-called parametrization method for …

Automatic differentiation for Fourier series and the radii polynomial approach

JP Lessard, JDM James, J Ransford - Physica D: Nonlinear Phenomena, 2016 - Elsevier
In this work we develop a computer-assisted technique for proving existence of periodic
solutions of nonlinear differential equations with non-polynomial nonlinearities. We exploit …

Stationary coexistence of hexagons and rolls via rigorous computations

JB van den Berg, A Deschênes, JP Lessard… - SIAM Journal on Applied …, 2015 - SIAM
In this work we introduce a rigorous computational method for finding heteroclinic solutions
of a system of two second order differential equations. These solutions correspond to …

Computer assisted proof of transverse saddle-to-saddle connecting orbits for first order vector fields

JP Lessard, JD Mireles James, C Reinhardt - Journal of Dynamics and …, 2014 - Springer
In this paper we introduce a computational method for proving the existence of generic
saddle-to-saddle connections between equilibria of first order vector fields. The first step …

Computation of maximal local (un) stable manifold patches by the parameterization method

M Breden, JP Lessard, JDM James - Indagationes Mathematicae, 2016 - Elsevier
In this work we develop some automatic procedures for computing high order polynomial
expansions of local (un) stable manifolds for equilibria of differential equations. Our method …

Global bifurcation diagrams of steady states of systems of PDEs via rigorous numerics: a 3-component reaction-diffusion system

M Breden, JP Lessard, M Vanicat - Acta applicandae mathematicae, 2013 - Springer
In this paper, we use rigorous numerics to compute several global smooth branches of
steady states for a system of three reaction-diffusion PDEs introduced by Iida et al.[J. Math …