The First Three Levels of an Order Preserving Hamiltonian Path in the Subset Lattice Csaba BiróDavid M. Howard OriginalPaper 29 January 2009 Pages: 101 - 107
Two Notes on the Variety Generated by Planar Modular Lattices Gábor CzédliMiklós Maróti OriginalPaper 04 March 2009 Pages: 109 - 117
Reversible and Bijectively Related Posets Michał Kukieła OriginalPaper 11 March 2009 Pages: 119 - 124
Preseparable Extensions of Multidimensional Preferences Jonathan K. HodgeMark KrinesJennifer Lahr OriginalPaper 03 April 2009 Pages: 125 - 147
On the Existence of Towers in Pseudo-Tree Algebras J. Donald Monk OriginalPaper 18 June 2009 Pages: 163 - 175
Modules on Involutive Quantales: Canonical Hilbert Structure, Applications to Sheaf Theory Hans HeymansIsar Stubbe OriginalPaper 27 June 2009 Pages: 177 - 196