This book is a record of the contents of the papers accepted for publication as the Proceedings of the 7 International Conference on Algebraic Hyperstructures and Applications, held in Taormina (Italy) on June 13-19, 1999. The papers in this volume display a wide panorama of myriad and diverse range of topics in Algebraic Hyperstructures in theory as well as applications. It presents a general view of the state of the current research accomplishment, significance ...