کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8900792 | 1631721 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A note on chemical trees with minimum Wiener polarity index
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
ریاضیات کاربردی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The Wiener polarity index (usually denoted by Wp) of a graph G is defined as the number of unordered pairs of the vertices of G which are at distance 3. Denote by CTn the family of all n-vertex chemical trees. In a recent paper, Ashrafi and Ghalavand [1] determined the first three minimum Wp values of n-vertex chemical trees for nâ¯â¥â¯7 and characterized the chemical trees attaining the first two minimum Wp values among all the members of CTn for nâ¯â¥â¯4. In this note, the chemical trees with the third minimum Wp value are characterized from the graph family CTn for nâ¯â¥â¯7, and the chemical trees from the family CTn,nâ¯â¥â¯4, with the first two minimum Wp values are also obtained in an alternative but shorter way.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematics and Computation - Volume 335, 15 October 2018, Pages 231-236
Journal: Applied Mathematics and Computation - Volume 335, 15 October 2018, Pages 231-236
نویسندگان
Akbar Ali, Zhibin Du, Muhammad Ali,