Blar i NTNU Open på forfatter "Berndt, Jussi"
-
On the index of meromorphic operator-valued functions and some applications
Berndt, Jussi; Gesztesy, Fritz; Holden, Helge; Nichols, Roger (Chapter, 2017)We revisit and connect several notions of algebraic multiplicities of zeros of analytic operator-valued functions and discuss the concept of the index of meromorphic operator-valued functions in complex, separable Hilbert ...