| 2015 |
Q-functions and boundary triplets of nonnegative operators |
Arlinskii, Yuri M.; Hassi, Seppo |
| 2014 |
Normal intermediate extensions of symmetric relations |
S. Hassi, H.S.V. de Snoo, and F.H. Szafraniec |
| 2014 |
Products of generalized Nevanlinna functions with symmetric rational functions |
S. Hassi, and H.L. Wietsma |
| 2014 |
Non-semi-bounded closed symmetric forms associated with a generalized Friedrichs extension |
Fleige, A.; Hassi, S.; de Snoo, H.S.V. ; Winkler, H. |
| 2014 |
Antitonicity of the inverse for selfadjoint matrices, operators, and relations |
J. Behrndt, S. Hassi, H.S.V. de Snoo, H.L. Wietsma |
