R.Simon Hilscher

Sturmian theory for linear Hamiltonian systems without controllability

Abstract

In this paper we present Sturmian separation and comparison theorems for linear Hamiltonian systems when no controllability assumption is imposed. This generalizes the traditional results of W.T.Reid for controllable (or normal) linear Hamiltonian systems to the possibly abnormal case. Our new theory is based on several recent results on linear Hamiltonian systems without controllability by W.Kratz, M.Wahrheit, V.Zeidan, and the author regarding the piecewise constant kernel for conjoined bases, the oscillation and eigenvalue theorems, and the Rayleigh principle.


Zpatky na publikace. / Back to publications.
Zpatky na hlavni stranu. / Back to the main page.

Last change: December 13, 2010. (c) Roman Simon Hilscher