Seppo Hassi

Seppo Hassi
Professor
University of Vaasa / School of Technology and Innovations / Mathematics

Contact

Seppo.Hassi [at] uwasa.fi
+358294498279
Fabriikki F482

Introduction

For a further personal home page see:

http://lipas.uwasa.fi/~sha/

Publications

Publication year Publication Authors
2006 Completeness and Riesz basis property of systems of eigenfunctions and associated functions of Dirac-type operators with boundary conditions depending on the spectral parameter S. Hassi and L.L. Oridoroga
2006 Form sums of nonnegative selfadjoint operators S. Hassi;A. Sandovici;H.S.V. de Snoo;and H. Winkler
2005 Q-functions of quasi-selfadjoint contractions Yu. Arlinskii;S. Hassi;H.S.V. de Snoo
2005 Generalized Friedrichs extensions associated with interface conditions for Sturm-Liouville operators A. Fleige;S. Hassi;H.S.V. de Snoo;and H. Winkler
2005 Asymptotic expansions of generalized Nevanlinna functions and their spectral properties Derkach Vladimir;Hassi Seppo;and de Snoo Henk