21 citations · 85 across the 22 of their papers we have counts for
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3 papers · 1 filter
math.FA2018
Numerical Range and Compressions of the Shift
Kelly Bickel, Pamela Gorkin
The numerical range of a bounded, linear operator on a Hilbert space is a set in that encodes important information about the operator. In this survey paper, we first…
math.FA2018
Applications of Envelopes
Kelly Bickel, Pamela Gorkin, Trung Tran
Intuitively, an envelope of a family of curves is a curve that is tangent to a member of the family at each point. Here we use envelopes of families of circles to study objects fro…
math.CV2018★ 9 cited
Level curve portraits of rational inner functions
Kelly Bickel, James Eldred Pascoe, Alan Sola
We analyze the behavior of rational inner functions on the unit bidisk near singularities on the distinguished boundary using level sets. We show that the unimodular…