%0 Journal Article %T Problems on Polytopes, Their Groups, and Realizations %A Egon Schulte %A Asia Ivic Weiss %J Mathematics %D 2006 %I arXiv %X The paper gives a collection of open problems on abstract polytopes that were either presented at the Polytopes Day in Calgary or motivated by discussions at the preceding Workshop on Convex and Abstract Polytopes at the Banff International Research Station in May 2005. %U http://arxiv.org/abs/math/0608397v1