13 citations · 78 across the 44 of their papers we have counts for
54 papers
Unitarily invariant norms
Stephan Ramon Garcia, Javad Mashreghi, Marek Ptak +1
This survey paper provides a comprehensive study of unitarily invariant norms on the algebra of matrices. This investigation leads naturally to the theory of symmetric…
Orthogonal projections in the local Dirichlet spaces
Emmanuel Fricain, Javad Mashreghi
We present an explicit formula for the orthogonal projection onto the subspace of analytic polynomials of degree at most in the local Dirichlet space , where the positive…
A Schwarz-Jack lemma, circularly symmetric domains and numerical ranges
Javad Mashreghi, Annika Moucha, Ryan O'Loughlin +2
We prove a Schwarz-Jack lemma for holomorphic functions on the unit disk with the property that their maximum modulus on each circle about the origin is attained at a point on the…
On the Crouzeix ratio for matrices
Bartosz Malman, Javad Mashreghi, Ryan O'Loughlin +1
The Crouzeix ratio of an complex matrix is the supremum of taken over all polynomials such that on the numerical range of . It i…
Double-layer potentials, configuration constants and applications to numerical ranges
Bartosz Malman, Javad Mashreghi, Ryan O'Loughlin +1
Given a compact convex planar domain with non-empty interior, the classical Neumann's configuration constant is the norm of the Neumann-Poincaré operator $K…
Conjugations of Unitary Operators, II
Javad Mashreghi, Marek Ptak, William T. Ross
For a given unitary operator on a separable complex Hilbert space $\h$, we describe the set of all conjugations (antilinear, isometric, and involutive…