Workshop on the Arithmetic of Quadratic Forms and Integral Lattices   INSTITUTO DE MATEMATICA Y FISICA FUTRONO, LAKE RANCO, CHILE DECEMBER 13-14, 2010 FUNDED BY UNIVERSIDAD DE TALCA, CONICYT   Invited Speakers Luis Arenas-Carmona, Universidad de Chile Constantin-Nicolae Beli, Institute of Mathematics of the Romanian Academy Rainer Dietmann, Royal Holloway, University of London Lenny Fukshansky, Claremont McKenna College Winfried Kohnen, University of Heidelberg Benjamin Linowitz, Dartmouth College Karl Mahlburg, Princeton University Byeong-Kweon Oh, Seoul National University Rudolf Scharlau, Universitat Dortmund, Germany Nils Skoruppa, Universität Siegen, Germany Fei Xu, School of Mathematics, Capital Normal University       Local Organizers: R. Baeza,  M.I. Icaza, M. O'Ryan Home Page