%0 Journal Article
%T BG-ranks and 2-cores
%A William Y. C. Chen
%A Kathy Q. Ji
%A Herbert S. Wilf
%J Mathematics
%D 2006
%I arXiv
%X We find the number of partitions of $n$ whose BG-rank is $j$, in terms of $pp(n)$, the number of pairs of partitions whose total number of cells is $n$, giving both bijective and generating function proofs. Next we find congruences mod 5 for $pp(n)$, and then we use these to give a new proof of a refined system of congruences for $p(n)$ that was found by Berkovich and Garvan.
%U http://arxiv.org/abs/math/0605474v2