%0 Journal Article
%T Tilted Sperner Families
%A Imre Leader
%A Eoin Long
%J Mathematics
%D 2011
%I arXiv
%X Let \cal A be a family of subsets of an n-set such that \cal A does not contain distinct sets A and B with |A\B| = 2|B\A|. How large can \cal A be? Our aim in this note is to determine the maximum size of such an \cal A. This answers a question of Kalai. We also give some related results and conjectures.
%U http://arxiv.org/abs/1101.4151v1