Volume 28, Number 1, March 2011
: Enumeration of Bigrassmannian Permutations Below a Permutation in Bruhat Order.
Volume 28, Number 2, July 2011
: Hedetniemi's Conjecture and Dense Boolean Lattices.
: Generating Sym(ω) by Permutations Preserving Dense Orders.
: Idempotent Block Splitting on Partial Partitions, I: Isotone Operators.
: Idempotent Block Splitting on Partial Partitions, II: Non-isotone Operators.
Volume 28, Number 3, November 2011
: On the Fixed Point Property for (3 + 1)-Free Ordered Sets.
S. Parameshwara Bhatta
: On the Problem of Characterizing Standard Elements by the Exclusion of Sublattices.