@incollection{eprints2453, publisher = {IEEE}, pages = {7793--7798}, month = {December}, title = {Polytopic outer approximations of semialgebraic sets}, author = {Vito Cerone and Dario Piga and Diego Regruto}, year = {2012}, booktitle = {Proceedings of the 51st Annual Conference on Decision and Control (CDC)}, note = {51st IEEE Conference on Decision and Control, held in Maui, Hawaii (USA); December 10-13 2012}, keywords = {Approximation algorithms; Approximation methods; Linear programming; Optimization; Polynomials; Robust stability; Robustness }, abstract = {This paper deals with the problem of finding a polytopic outer approximation P* of a compact semialgebraic set S ? Rn. The computed polytope turns out to be an approximation of the linear hull of the set S. The evaluation of P* is reduced to the solution of a sequence of robust optimization problems with nonconvex functional, which are efficiently solved by means of convex relaxation techniques. Properties of the presented algorithm and its possible applications in the analysis, identification and control of uncertain systems are discussed.}, url = {http://eprints.imtlucca.it/2453/} }