3 papers
math-ph2004
Symmetry properties of some Euler-type equations in plasma physics
F. Ceccherini, G. Cicogna, F. Pegoraro
We consider a system of partial differential equations, of interest to plasma physics, and provide all its Lie point symmetries, with their respective invariant solutions. We also…
nlin.CD2002
Mel'nikov method revisited
G. Cicogna, M. Santoprete
We illustrate a completely analytic approach to Mel'nikov theory, which is based on a suitable extension of a classical method, and which is parallel and -- at least in part -- com…
solv-int1999
Resonant Bifurcations
Cicogna G
We consider dynamical systems depending on one or more real parameters, and assuming that, for some ``critical'' value of the parameters, the eigenvalues of the linear part are res…