The spectrum of the nonlinear B1 homogeneous problem has been resolved by recurring to the approximation of the nonlinear polynomial eigenvalue problem. This method should be resumed in a short note aimed fro publication on a peer-reviewed journal.
As a complement, it would be interesting to investigate the extension to the general BN form, still in the infinite homogeneous problem.
The spectrum of the nonlinear B1 homogeneous problem has been resolved by recurring to the approximation of the nonlinear polynomial eigenvalue problem. This method should be resumed in a short note aimed fro publication on a peer-reviewed journal.
As a complement, it would be interesting to investigate the extension to the general BN form, still in the infinite homogeneous problem.