Fig. 10From: Enumeration method for tree-like chemical compounds with benzene rings and naphthalene rings by breadth-first search orderExamples of symmetric paths. The red lines denote symmetric paths. a T 5, where (v 2,v 1,v 3) is a symmetric path, and \(T_{5}^{sub}(v_{2},v_{1})=_{m}T_{5}^{sub} (v_{3},v_{1})\). b T 6, where (v 5,v 2,v 1,v 3) is a symmetric path, \(T_{6}^{sub}(v_{2},v_{1})=_{m}T_{6}^{sub}(v_{1},v_{2})\) and C v 4 T 6=C v 6 T 6 Back to article page