arXiv:1010.2737v1 [math.ST] 13 Oct 2010 Identification and well-posedness in a class of nonparametric problems Victoria Zinde-Walsh ∗ McGill University and CIREQ victoria.zinde-walsh@mcgill.ca (514) 398 4834 May 30, 2018 ∗ The support of the Social Sciences and Humanities Research Council of Canada (SSHRC) and the Fonds qu´ ebecois de la recherche sur la soci´ et´ e et la culture (FRQSC) is gratefully acknowledged. 1