摘要
ＯＮＴＨＥＴＯＴＡＬＤＩＳＴＡＮＣＥＢＥＴＷＥＥＮＮＯＤＥＳＩＮＴＲＥＥＳ￥Ｍｏｏｎ，Ｊ．Ｗ．（ＭａｔｈｅｍａｔｉｃｓＤｅｐａｒｔｍｅｎｔ，ＵｎｉｖｅｒｓｉｔｙｏｆＡｌｂｅｒｉｔａ，Ｅｄｍｏｎｔｏｎ，Ｃａｎａｄａ，Ｔ６Ｇ２Ｇ１）Ａｂｓｔｒａｃｔ：Ｚｈ...
Zhou G.L.and Shi R. H. proved a lower boUnd,conjectured by the computer program Grafitti,for the product of the total distance between nodes in a tree Tn and the stun of the reciprocals of the degrees of the nodes of Tn.We establish a stronger version of this inequality that is best possible for all n≥2.
