Manickam-Mikl\'os-Singhi Conjectures on Partial Geometries
  In this paper we give a proof of the Manickam-Mikl\'os-Singhi (MMS) conjecture for some partial geometries. Specifically, we give a condition on partial geometries which implies that the MMS conjecture holds. Further, several specific partial geometries that are counter-examples to the conjecture are described. 
Ferdinand Ihringer, Karen Meagher
math.CO