The proceedings of the workshop "Numerical Methods in Optimization"

This special issue of Rendiconti del Circolo Matematico di Palermo consists of the lectures presented at the international workshop “Numerical Methods in Oprimization” held at Cortona during June 9-12, 1997.The workshop was organized by INdAM (Istituto Nazionale di Alta Matematica “Francesco Severi”) and partially supported by GNIM (Gruppo Nazionale per l’Informatica Matematica – CNR), CPS (Research Center on Parallel Computing and Supercomputers) and by EEC (HCMR Grant n. ERBCHECCT940253).The purpose of the workshop was to bring together mathematicians working in areas of Optimization where numerical methods play a basic role, so that they could not only present formal lectures, but also exchange ideas informally.The papers in this issue are arranged in alphabetic order of their authors’ name.Some papers deal with the solution to particular problems while others are devoted primarily to theoretical and numerical aspects of optimization. However, these latter papers also contain some problems of practical interest.This special issue of the journal Rendiconti del Circolo Matematico di Palermo allows a scientific continuity with the issue Serie II, Suppl. Volume 48, 1997 (edited by F. Giannessi, A. Maugeri and M. De Luca) containing the proceedings of the international worksop “Equilibrium Problems with Side Constraints, Lagrangean Theory and Duality II” held in Scilla, May 17-18, 1996.