Byrnes, G.B.; Haggar, F.A.; Quispel, G.R.W. - In: Physica A: Statistical Mechanics and its Applications 272 (1999) 1, pp. 99-129
We present a number of alternative sufficient conditions for the existence of pre-symplectic or pre-implectic (Poisson …) structures, for both ordinary differential (ODE) and ordinary difference (OΔE) equations. Four alternative sets of conditions are …
