The London Mathematical Society supported a symposium
with the above title
at the University of Leeds from September 2nd until
September 11th 1998.

The organizers were Jonathan Partington (Leeds) and Stuart Townley (Exeter).

10.00 Jonathan Partington (Leeds)*
Normalized coprime factorizations and approximations of delay systems
*

11.30 Birgit Jacob (Leeds)*
Realization of Inner Functions
*

14.00 Catherine Bonnet (Rocquencourt)*
Robust controllers for delay systems with nonlinear actuators and sensors
*

**Thursday 3rd September**

10.00-11.00, 11.30-12.45, 14.00-14.45 (approx.)

Stuart Townley (Exeter) and Hartmut Logemann (Bath)*
Low-gain integral control of regular systems
1. Multivariable low-gain integral control of regular systems
2. Low-gain integral control of regular linear systems subject to input nonlinearities*

**Friday 4th September**

10.00 Pertti Mäkilä (Tampere)*
Four Puzzles in Systems and Control*

11.30 Angel Ribalta (Bremen)*
Approximation of transfer functions of infinite dimensional dynamical systems by rational interpolants with prescribed poles*

14.00 Hans Zwart (Twente)*
The mixed sensitivity problem for SISO non-rational systems
*

**Saturday 5th September**

Excursion to Horton-in-Ribblesdale and Pen-y-ghent

**Monday 7th September**

10.00 Nicholas Young (Newcastle)*
Commutant lifting and spectral interpolation
*

11.30 Laurent Baratchart (Sophia-Antipolis)*
AAK theory in L ^{p}*

14.00 Hans Zwart (Twente)*
Some remarks on two of George Weiss's conjectures
*

**Tuesday 8th September**

10.00 Richard Rebarber (Nebraska)*
Necessary and Sufficient Conditions for Stabilization of Infinite-Dimensional Systems by Generalized Sampled-Data Control*

11.30 Stuart Townley (Exeter)*
Illuminating the gap between necessary and sufficient conditions in output feedback sampled-data stabilization of DPS*

14.00 George Halikias (Leeds)*
Super-optimal approximation methods in robust control
*

**Wednesday 9th September**

10.00 Tony Pritchard (Warwick) and Diederich Hinrichsen (Bremen)*
Approximation of Spectral Value Sets*

11.30 George Weiss (Exeter)*
Inversions of systems*

14.00 Keith Glover (Cambridge)*
Analysis of systems with repeated scalar nonlinearities
*

**Thursday 10th September**

10.00 Joseph Winkin (Namur)*
Spectral Factorization for Distributed Parameter Systems*

11.30 Richard Rebarber (Nebraska)*
Lack of Time-delay Robustness for Stabilization of a Structural Acoustics Model*

14.00 David Oates (Exeter)*
Band-limited approximation in L ^{2}([0,),R)*

**Friday 11th September**

10.00 Banu Ünalmis (Leeds)*
Almost Periodic Functions and Wavelet Transforms*

11.30 Michael Cantoni (Cambridge)*
Useful Representations of Linear Periodically-Time-Varying Systems*

This page last updated April 6th 2009 by Jonathan Partington.