Unmixed d-uniform r-partite hypergraphs
  In this paper, we characterize all unmixed d-uniform r-partite hypergraphs under a certain condition. Also we give a necessary condition for unmixedness in d-uniform hypergraphs with a perfect matching of size n. Finally we give a sufficient condition for unmixednes in d-uniform hypergraphs with a perfect matching. 
Reza Jafarpour-Golzari and Rashid Zaare-Nahandi
math.AC math.CO