13 citations · 13 across the 4 of their papers we have counts for
4 papers · 1 filter
A note on hamiltonian cycles in -tough -free graphs
Lingjuan Shi, Songling Shan
Let be a real number and be a graph. We say is -tough if for every cutset of , the ratio of to the number of components of is at least . The…
The fullerenes with a perfect star packing
Ling-Juan Shi
A spanning subgraph of a graph is called a perfect star packing in if every component of the spanning subgraph is isomorphic to the star graph . An efficient domin…
Characterizing the fullerene graphs with the minimum forcing number 3
Lingjuan Shi, Heping Zhang, Ruizhi Lin
The minimum forcing number of a graph is the smallest number of edges simultaneously contained in a unique perfect matching of . Zhang, Ye and Shiu \cite{HDW} showed that th…
Tight upper bound on the maximum anti-forcing numbers of graphs
Lingjuan Shi, Heping Zhang
Let be a simple graph with a perfect matching. Deng and Zhang showed that the maximum anti-forcing number of is no more than the cyclomatic number. In this paper, we get a…