Institution: | 1. Alfréd Rényi Institute of Mathematics, Reáltanoda utca 13-15, 1053 Budapest, Hungary;2. Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117 Budapest, Hungary;1. Department of Mathematics, University of Kaiserslautern, Kaiserslautern, Germany;2. Department of Mathematics: Analysis, Logic and Discrete Mathematics, Ghent University, Ghent, Belgium;1. Departamento de Matemática Aplicada y Ciencias de la Computación, Universidad de Cantabria, Santander, Spain;2. Departamento de Matemática e Informática aplicadas a la ingenieria civil y naval, Universidad Politécnica de Madrid, Madrid, Spain;1. Department of Mathematics, Technion - Israel Institute of Technology, Haifa, Israel;2. Department of Mathematics and Computer Science, The Open University of Israel, Israel |