Operator Theory, Mathematical Physics and Their Applications
Dedicated to Professor Fritz Gesztesy on the occasion of his 70th birthday, Part I.

Preface: M. Zinchenko, S. Reich, A. Zaslavski:

M. Angélica Astaburuaga, Víctor H. Cortés, Claudio
Fernández and Rafael Del Río
Resonances and stability of absolutely continuous spectrum for finite rank perturbations

Jussi Behrndt, Iveta Semorádová and Petr Siegl
The imaginary Airy operator with a onecenter δinteraction

Sergey Belyi, Konstantin A. Makarov and Eduard Tsekanovskii
The Lsystem representation and centropy

Andreas Buchinger, Nathanael Skrepek and Marcus Waurick
Weak operator continuity for evolutionary equations

Ole Fredrik Brevig and Kristian Seip
The norm of the backward shift on H^{1} is $\frac{2}{\sqrt{3}}\frac{}{}$

Alan Carey and Galina Levitina
On a conjectured property of the Witten index and an application to Levinson's theorem

Chian Yeong Chuah, ZhenChuan Liu and Tao Mei
A direct proof for operator hardylittlewood maximal inequality

Carson Connard, Benjamin Ingimarson, Roger Nichols and Andrew Paul
Weak convergence of spectral shift functions revisited

Jonathan Eckhardt Longtime asymptotics for the~Kortewegde~Vries equation with integrable~reflectionless initial data

Pavel Exner
Geometry effects in quantum dot families

Rupert L. Frank
A divcurl inequality for orthonormal functions

Barry Simon
Fritz and MePerspectives in inverse spectral theory 















