On the Hankel-norm approximation of upper-triangular operators and matrices P. DewildeA. -J. van der Veen OriginalPaper Pages: 1 - 45
Some commutator estimates for pseudo differential operators with negative definite functions as symbols Walter Hoh OriginalPaper Pages: 46 - 53
On some algebras diagonalized by M-bases of ℓ2 A. KatavolosM. S. LambrouM. Papadakis OriginalPaper Pages: 68 - 94
Complete controllability and spectrum assignment in infinite dimensional spaces A. S. MarkusV. R. Olshevsky OriginalPaper Pages: 107 - 122
Sobolev space methods for the Laplace equation in the exterior of the disk Frank Penzel OriginalPaper Pages: 123 - 136