Randic index;
geometric-arithmetic index;
Zagreb index;
D O I:
10.3906/mat-1510-115
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
The Randic index (R) and the geometric arithmetic index (GA) are found to be useful tools in QSPR and QSAR studies. In the Journal of Inequalities and Applications 180, 1-7, Lokesha, Shwetha Shetty, Ranjini, Cangul, and Cevik gave "New bounds for Randic and GA indices." In the paper, we first point out that Theorems 1, 2, and 4 are incorrect and in this short note we present the correct inequalities for Randic and GA indices. In the same paper, we provide the equality cases for Theorems 3, 5, and 6.
机构:
Sefako Makgatho Hlth Sci Univ, Dept Math & Appl Math, POB 60, ZA-0204 Pretoria, South AfricaSefako Makgatho Hlth Sci Univ, Dept Math & Appl Math, POB 60, ZA-0204 Pretoria, South Africa
Abubakar, Muhammad Shafii
Aremu, Kazeem Olalekan
论文数: 0引用数: 0
h-index: 0
机构:
Sefako Makgatho Hlth Sci Univ, Dept Math & Appl Math, POB 60, ZA-0204 Pretoria, South Africa
Usmanu Danfodiyo Univ, Dept Math, PMB 2346, Sokoto, NigeriaSefako Makgatho Hlth Sci Univ, Dept Math & Appl Math, POB 60, ZA-0204 Pretoria, South Africa
机构:
Univ Carlos III Madrid, Dept Matemat, Ave Univ 30, Madrid 28911, SpainUniv Carlos III Madrid, Dept Matemat, Ave Univ 30, Madrid 28911, Spain
Pestana, Domingo
Sigarreta, Jose M.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Autonoma Guerrero, Fac Matemat, Carlos E Adame 5, Acapulco, Gro, MexicoUniv Carlos III Madrid, Dept Matemat, Ave Univ 30, Madrid 28911, Spain
Sigarreta, Jose M.
Touris, Eva
论文数: 0引用数: 0
h-index: 0
机构:
Univ Autonoma Madrid, Fac Ciencias, Dept Matemat, Campus Cantoblanco, E-28049 Madrid, SpainUniv Carlos III Madrid, Dept Matemat, Ave Univ 30, Madrid 28911, Spain