| 2020 |
Operational calculus for rows, columns, and blocks of linear relations |
Hassi, Seppo; Labrousse, Jean-Philippe; de Snoo, Henk |
| 2020 |
Boundary value problems, Weyl functions, and differential operators |
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk |
| 2019 |
Stieltjes and inverse Stieltjes holomorphic families of linear relations and their representations |
Arlinskiĭ, Yury; Hassi, Seppo |
| 2019 |
Factorized sectorial relations, their maximal-sectorial extensions, and form sums |
Hassi, Seppo; Sandovici, Adrian; de Snoo, Henk |
| 2019 |
Holomorphic operator-valued functions generated by passive selfadjoint systems |
Arlinskiĭ, Yuri; Hassi, Seppo |