12 citations · 27 across the 4 of their papers we have counts for
4 papers
Constructing Invariant Subspaces as Kernels of Commuting Matrices
Carl C. Cowen, William Johnston, Rebecca G. Wahl
Given an n by n matrix A over the complex numbers and an invariant subspace L, this paper gives a straightforward formula to construct an n by n matrix N that commutes with A and h…
Convexity of the Berezin Range
Carl C. Cowen, Christopher Felder
This paper discusses the convexity of the range of the Berezin transform. For a bounded operator acting on a reproducing kernel Hilbert space (on a set ), this is the se…
Spectra of Some Weighted Composition Operators on
Carl Cowen, Eungil Ko, Derek Thompson +1
We completely characterize the spectrum of a weighted composition operator on when has Denjoy-Wolff point with , the iterates,…
Finite Blaschke Products as Compositions of Other Finite Blaschke Products
Carl C. Cowen
These notes answer the question "When can a finite Blaschke product be written as a composition of two finite Blaschke products and , that is, , in a…