26 citations · 55 across the 41 of their papers we have counts for
42 papers
Littlewood subordination for de Branges--Rovnyak spaces
Emmanuel Fricain, Andreas Hartmann, William T. Ross +1
In this paper, we study composition operators that act between different de Branges-Rovnyak spaces. Our main results are suggested by a paper of Mashreghi and Shabankhah concerning…
An analytic approach to estimating the solutions of Bézout's polynomial identity
Emmanuel Fricain, Andreas Hartmann, William T. Ross +1
This paper contains sharp bounds on the coefficients of the polynomials and which solve the classical one variable Bézout identity , where and are po…
Sharp estimates of the solutions to B{é}zout's polynomial equation and a corona theorem
Emmanuel Fricain, Andreas Hartmann, Ross William T. +1
In this paper, we obtain estimates for the solutions to the classical B{é}zout equation that are analogous to Carleson's solution to the corona theorem for the bounded analytic fun…
Reducing subspaces of contractions
Chafiq Benhida, Emmanuel Fricain, Dan Timotin
Using the Sz.-Nagy--Foias theory of contractions, we obtain general results about reducibility for a class of completely nonunitary contractions. These are applied to certain trunc…
The Smirnov class for de Branges--Rovnyak spaces
Emmanuel Fricain, Andreas Hartmann, William T. Ross +1
Using an explicit construction, we show that the de Branges-Rovnyak spaces , corresponding to rational , are contained in their associated Smirnov classes.
The invariant subspaces of
Dan Timotin
Using the tools of Sz.-Nagy--Foias theory of contractions, we describe in detail the invariant subspaces of the operator , where is the unilateral shift on a H…