Noszvaj (Hungary) June 11 to June 18, 2000

The 38th International Symposium on Functional Equations (ISFE), held at Noszvaj (Hungary), June 11 to June 18, 2000 was included into the activities of WMY 2000, in particular since in its program a series of seven talks was scheduled, giving surveys of significant open problems related to functional equations and their applications which could form a collection of topics for future research in the 21st century and whose solutions could be considered as a substantial progress. The idea to have such a series of problem talks came from János Aczél (Waterloo, Ontario) who convinced the Scientific Committee and the Organizing Committee to plan the series. The topics presented were inconnection to some, through not all of the most active fileds of present research in functional equations. The recently renewed study of functional equations in the complex domain could unfortunately not be presented.

A list of the speakers and titles of the problem talks follows.

• Claudi Alsina (Barcelona): Problems on associativity, related functional equations and generalizations.
• Walter Benz (Hamburg): Functional equation problems in applications to geometry.
• Jean-Claude Falmagne (Irvine, CA): Functional equations problems in the social and behavioral sciences.
• Roman Ger (Katowice): A collection of problems in stability theory.
• Zsolt Páles (Debrecen): Problems in the regularity theory of functional equations.
• Jürg Rätz (Bern): Functional equations problems concerning orthogonality.
• Ludwig Reich (Graz): Problems concerning algebraic aspects of functional equations.

Also the survey talk „Schilling’s equation and related problems“ by Roland Girgensohn (Neuherberg, Germany) was partly devoted to open problems on functional equations in a single variable.

Detailed versions of the problem talks will appear in forthcoming volumes of Aequationes Mathematicae (Birkhäuser Verlag, Basel).

For more information on the 38th International Symposium on Functional Equations see http://riesz.math.klte.hu/~isfe2000/.

Written by Ludwig Reich (Graz)