A comparison of different indicators of chaos based on the deviation
  vectors. Application to symplectic mappings
  The aim of this research work is to compare the reliability of several
variational indicators of chaos on mappings. The Lyapunov Indicator (LI); the
Mean Exponential Growth factor of Nearby Orbits (MEGNO); the Smaller Alignment
Index (SALI); the Fast Lyapunov Indicator (FLI); the Dynamical Spectra of
stretching numbers (SSN) and the corresponding Spectral Distance (D); and the
Relative Lyapunov Indicator (RLI), which is based on the evolution of the
difference between two close orbits, have been included.
  The experiments presented herein allow us to reliably suggest a group of
chaos indicators to analyze a general mapping. We show that a package composed
of the FLI and the RLI (to analyze the phase portrait globally) and the MEGNO
and the SALI (to analyze orbits individually) is good enough to make a
description of the systems' dynamics.
