13 citations · 16 across the 7 of their papers we have counts for
8 papers
Rigidity of weighted composition operators on
Mikael Lindström, Santeri Miihkinen, Pekka J. Nieminen
We show that every non-compact weighted composition operator acting on a Hardy space for fixes an isomorphic copy of the sequ…
Structural rigidity of generalised Volterra operators on
Santeri Miihkinen, Pekka J. Nieminen, Eero Saksman +1
We show that the non-compact generalised analytic Volterra operators , where , have the following structural rigidity property on the Hardy spaces f…
Rigidity of composition operators on the Hardy space
Jussi Laitila, Pekka J. Nieminen, Eero Saksman +1
Let be an analytic map taking the unit disk into itself. We establish that the class of composition operators exhibits a rather stro…
Essential norms and weak compactness of integral operators between weighted Bergman spaces
Santeri Miihkinen, Pekka Nieminen, Wen Xu
We consider Volterra-type integration operators between Bergman spaces induced by weights satisfying a doubling property. We derive estimates for the operator norms, esse…
The Gaussian free field and Hadamard's variational formula
Haakan Hedenmalm, Pekka J. Nieminen
We relate the Gaussian free field on a planar domain to the variational formula of Hadamard which explains the change of the Green function under a perturbation of the domain. This…
Weak compactness and essential norms of integration operators
Jussi Laitila, Santeri Miihkinen, Pekka J. Nieminen
Let be an analytic function on the unit disc and consider the integration operator of the form . We show that on the spaces and the op…