Randić's molecular connectivity index

The Randić index, also known as the connectivity index, of a graph is the sum of bond contributions ${\displaystyle 1/(d_{i}d_{j})^{1/2}}$ where ${\displaystyle d_{i}}$ and ${\displaystyle d_{j}}$ are the degrees of the vertices making bond i ~ j.

This

References

• ISBN 978-3-527-31852-0
• Li, Xueliang; Shi, Yongtang (2008), "A survey on the Randić index", MATCH Communications in Mathematical and in Computer Chemistry, 59 (1): 127–156.

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