Hypergraphs extend classical graphs by allowing hyperedges to connect any nonempty subset of vertices, thereby capturing complex group-level relationships. Superhypergraphs advance this framework by introducing recursively nested powerset layers, enabling the representation of hierarchical and self-referential connections among hyperedges. A line graph encodes the adjacencies between edges of an original graph by transforming each edge into a vertex and connecting two vertices if their corresponding edges share a common endpoint. An iterated line graph arises from the repeated application of the line graph construction, where each iteration takes the previous line graph as its input. In the field of chemistry, concepts such as molecular graphs and chemical graphs are well established, and the theories of hypergraphs, line graphs, and superhypergraphs have also been investigated within this context. In this paper, we introduce the notions of Molecular Line SuperHyperGraphs and Molecular Iterated Line SuperHyperGraphs, providing formal definitions and examining their potential applications.
Tsunenori Fujita (Wed,) studied this question.