Positivity, graphical models, and modeling of complex multivariate dependencies October 13 to October 17, 2014 American Institute of Mathematics, Palo Alto, CA Organizers: Dominique Guillot, Apoorva Khare, Helene Massam, and Bala Rajaratnam Description: This workshop, sponsored by AIM and the NSF, will be devoted to studying functions that preserve Loewner properties on (distinguished submanifolds of) the cone of positive semidefinite matrices. Deadline: June 13, 2014 Details: http://aimath.org/workshops/upcoming/modelmultivar