Espaces de Banach ultraplats et espaces de Lindenstrauss-Pelczynski
Five limit cycles for a simple cubic system.
We resolve the centre-focus problem for a specific class of cubic systems and determine the number of limit cycles which can bifurcate from a fine focus. We also describe the methods which we have developed to investigate these questions in general. These involve extensive use of Computer Algebra; we have chosen to use REDUCE.
Prehomogeneous spaces associated with nilpotent orbits in simple real Lie algebras and and their relative invariants.
Centres and limit cycles for an extended Kukles system.
Page 1