P. Kunstmann

collaborators

2 papers

math.FA2025

A cheap way to closed operator sums

Bernhard H. Haak, Peer Christian Kunstmann

Let $A$ and $B$ be sectorial operators in a Banach space $X$ of angles $I ¨ _{A}$ and $I ¨ _{B}$ , respectively, where $I ¨ _{A} + I ¨ _{B} < I ¨ $ . We present a simple and common approach to results on…

math.AP2025

$H^{\infty}$ -calculus for Stokes operators on rough and on unbounded domains

Peer Christian Kunstmann, Patrick Tolksdorf

In this article, we give an overview on known as well as new results on the boundedness of the $H^{\infty}$ -calculus of the Stokes operator in rough as well as in unbounded (smooth…

A cheap way to closed operator sums

H∞-calculus for Stokes operators on rough and on unbounded domains

$H^{\infty}$ -calculus for Stokes operators on rough and on unbounded domains