图 G 的完美的匹配 M 的强迫反的数字不在其移动使 M 成为产生的图匹配的唯一的完成式的 M 是边的最小的数字。G 的强迫反的光谱是在 G 的所有完美的匹配上的强迫反的数字的集合:在这份报纸,我们证明任何压缩 cata 的六角形的系统的强迫反的光谱是连续的,也就是说,它是连续整数的一个有限集合。
The anti-forcing number of a perfect matching M of a graph G is the minimal number of edges not in M whose removal makes M a unique perfect matching of the resulting graph. The anti-forcing spectrum of G is the set of anti-forcing numbers over all perfect matchings of G. In this paper, we prove that the anti-forcing spectrum of any cata-condensed hexagonal system is continuous, that is, it is a finite set of consecutive integers.