| 2012 |
Dirac structures and boundary relations |
Hassi, Seppo; van der Schaft, Arjan J; de Snoo, Hendrik S.V.; Zwart, Hans J. |
| 2012 |
John Williams Calkin: a short biography |
Hassi, Seppo; de Snoo, Hendrik S.V.; Szafraniec, Franciszek H. |
| 2012 |
Infinite-dimensional perturbations, maximally nondensely defined symmetric operators, and some matrix representations |
Hassi, Seppo; de Snoo, H.S.V.; Szafraniec, F.H. |
| 2012 |
Truncated moment problem in the class of generalized Nevanlinna functions |
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk |
| 2012 |
On the unitary equivalence of the proper extensions of a Hermitian operator and the Weyl function |
Malamud, Mark, Mogilevskii, Vadim; Hassi, Seppo |
