H. Zwart

activity

20082023

most citedOn continuity of solutions for parabolic control systems and input-to-state stability

59 citations · 154 across the 25 of their papers we have counts for

collaborators

Showing 2013 · math.FAShow all

2 papers · 2 filters

math.FA2013

Less than one implies zero

Felix Schwenninger, Hans Zwart

In this paper we show that from the estimate $sup_{t \geq 0} ∥ C (t) - cos (a t) I ∥ < 1$ we can conclude that $C (t)$ equals $cos (a t) I$ . Here $(C (t))_{t \geq 0}$ is a stro…

math.FA2013★ 7 cited

Generators with a closure relation

Felix Schwenninger, Hans Zwart

Assume that a block operator of the form $(A_{1} A_{2} 0)$ , acting on the Banach space $X_{1} \times X_{2}$ , generates a contrac…