2 papers
math.CV2026
A pathological de Branges-Rovnyak space
Thomas Ransford
We construct a de Branges-Rovnyak space containing the polynomials as a dense subspace, together with a function in the space that lies outside the closed linear span of its Taylor…
math.CV2026
On the coefficient formula for de Branges-Rovnyak norms
Thomas Ransford
Let be the de Branges-Rovnyak space associated to a non-extreme point of the unit ball of , and let , where is the Pythagorean mate of …