Approximation of dynamical systems using S-systems theory : application to biological systems

Details Approximation of dynamical systems using S-systems theory : application to biological systems Approximation of dynamical systems using S-systems theory : application to biological systems

2005-03-03

arxiv.org/abs/cs/0503008v1

Computer Science

Symbolic Computation

Scientific paper

In this paper we propose a new symbolic-numeric algorithm to find positive equilibria of a n-dimensional dynamical system. This algorithm implies a symbolic manipulation of ODE in order to give a local approximation of differential equations with power-law dynamics (S-systems). A numerical calculus is then needed to converge towards an equilibrium, giving at the same time a S-system approximating the initial system around this equilibrium. This algorithm is applied to a real biological example in 14 dimensions which is a subsystem of a metabolic pathway in Arabidopsis Thaliana.

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