Convex algebraic geometry, optimization and applications September 21 to September 25, 2009 American Institute of Mathematics, Palo Alto, CA Organizers: J. William Helton, Jiawang Nie, and Pablo Parrilo Description: This workshop, sponsored by AIM and the NSF, will be devoted to the study of "Convex Algebraic Geometry" and some of its numerous applications. Deadline: May 21, 2009 Details: http://aimath.org/ARCC/workshops/convexalggeom.html