13 citations · 53 across the 27 of their papers we have counts for
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math.FA2012
Spectral theory of Schrödinger operators with infinitely many point interactions and radial positive definite functions
Mark M. Malamud, Konrad Schmüdgen
A number of results on radial positive definite functions on related to Schoenberg's integral representation theorem are obtained. They are applied to the study of…
math.FA2012
Unitary equivalence of proper extensions of a symmetric operator and the Weyl function
Seppo Hassi, Mark Malamud, Vadim Mogilevskii
Let be a densely defined simple symmetric operator in $\gH$, let $Π=\bt$ be a boundary triplet for and let $M(\cd)$ be the corresponding Weyl function. It is known that t…