We define a new class of hypergraphs (partitive hypergraphs) which generalizes both, the set of all externally related subsets of a graph and the set of all committees of an hypergraph. We give a characterization of the partitive hypergraphs and moreover of those which are associated with hypergraphs or graphs.
['M. Chein', 'M. Habib', 'M. C. Maurer']
Partitive hypergraphs