In 1972, Gutman and Trinajstic showed that total -energy of a molecule depends upon a numeric quantity which is often called as Zagreb index. In the same report, they also discussed another numeric quantity depending on the number of atoms at a distance two from a particular atom and proved influencing results on -energy of a molecule. In modern literature, this quantity is named as connection number. In this article, we will describe some Zagreb connection numbers for hourglass section in carbon nanocone network with different lengths of cycle in the central core.

中文翻译：

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基于连接数的碳纳米锥中广义沙漏截面的研究

在1972年，古特曼和Trinajstic表明总-的分子的能量取决于其通常称为萨格勒布指数一个数值量。在相同的报告中，他们还讨论了根据原子的数目在从特定原子上的距离的两个另一数字量，并证明对影响的结果-的分子的能量。在现代文学中，这个数量被称为连接数。在本文中，我们将描述碳纳米锥网络中沙漏截面的一些萨格勒布连接数，在中心核心具有不同的循环长度。