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引用
期刊论文
Hexagonal systems with forcing single edges*
Discrrte Applied Mathematics 72 (1997) 295-301,-0001,():
In this paper, we introduce the concept of a forcing single edge in a hexagonal system H, which is an edge of H belonging to all but one perfect matching of H. We completely determine all the hexagonal systems with a forcing single edge. A generating function for the number of such systems is also given.
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