| Institution: | 1. Departamento de Matemática, Universidade Federal do Rio Grande do Norte, Natal, RN, 59078-970, Brazil;2. Department of Mathematics, State University of Campinas, 651 Sergio Buarque de Holanda, 13083-859 Campinas, SP, Brazil;1. University of Missouri-Columbia, Mathematics Department, Columbia, MO, USA;2. College of the Ozarks, Mathematics Department, Point Lookout, MO, USA;1. Sistiana Mare 56, 34011 Trieste, Italy;2. Departamento de Matemáticas, Universidad de La Serena, Cisternas 1200, 1700000 La Serena, Chile;3. IMUV, Universidad de Valparaíso, Gran Bretaña 1111, 2340000 Valparaíso, Chile;1. School of Mathematics, Trinity College Dublin, Ireland;2. Hamilton Mathematics Institute, Ireland;1. Dipartimento di Matematica e Applicazioni, Università di Napoli Federico II, Napoli, Italy;2. School of Mathematical Sciences, Queen Mary University of London, London, England, United Kingdom;1. Universidade Tecnológica Federal do Paraná, 85053-525, Guarapuava-PR, Brazil;2. Universidade de São Paulo - ICMC, Caixa Postal 668, 13560-970, São Carlos-SP, Brazil;3. Universidade Federal da Paraíba, 58051-900, João Pessoa, PB, Brazil;4. Martin-Luther-Universität Halle-Wittenberg, Institut für Informatik, D-06 099 Halle (Saale), Germany |
