# Lyap: A fortran 90 program to compute the Lyapunov exponents of a dynamical system from a time series

## Description

Abstract The program presented computes all the Lyapunov exponents of an unknown dynamical system from a time series. The method used is based on a fitting of the time series with an analytical function through a least square minimization, after which the Lyapunov exponents are determined from the stability of the trajectories calculated using this analytical function. Title of program: LYAP Catalogue Id: ADHC_v1_0 Nature of problem The program calculates all the Lyapunov exponents of a dynamical system when the law of evolution is unknown, as is the case for most of the systems studied in applied science (astronomy, biology, ...), and only a set of data in the form of a time series is available. Versions of this program held in the CPC repository in Mendeley Data ADHC_v1_0; LYAP; 10.1016/S0010-4655(97)00124-0 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)