Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Hanyuan Deng"'
Publikováno v:
Electronic Journal of Mathematics, Vol 7, Pp 19-34 (2024)
Externí odkaz:
https://doaj.org/article/326b59bbf1c14e0e842fc96c79a3acc5
Publikováno v:
AIMS Mathematics, Vol 8, Iss 12, Pp 31186-31197 (2023)
For an integer $ h\geq 0 $, the $ h $th order Randić index for a simple graph $ G $ is defined as $ R^{h}(G) = \sum_{\pi}\frac{1}{\sqrt{v_1(\pi)v_2(\pi)\cdots v_{h+1}(\pi)}} $, where $ \pi $ extends over all paths of length $ h $ in $ G $ and $ v_i(
Externí odkaz:
https://doaj.org/article/11a2547ee5ca4df0a47c8e4821e17b46
Autor:
Zhenhua Su, Hanyuan Deng
Publikováno v:
Axioms, Vol 13, Iss 9, p 632 (2024)
Vertex-degree-based (VDB) topological indices have been applied in the study of molecular structures and chemical properties. At present, the exponential VDB index has been studied extensively. Naturally, we began to consider the logarithmic VDB inde
Externí odkaz:
https://doaj.org/article/3ee72c25b6594e26841816a17a97135c
Publikováno v:
Electronic Journal of Mathematics, Vol 5, Pp 29-45 (2023)
Externí odkaz:
https://doaj.org/article/8e368e213819417ca3fa7c1f225f9d1c
Publikováno v:
Discrete Mathematics Letters, Vol 10, Pp 14-20 (2022)
Externí odkaz:
https://doaj.org/article/e4bc29f163744c00993455c537a61c53
Autor:
Xin Liu, Hanyuan Deng, Qiaoqing Xu, Kai Luo, Jiang Zhou, Weihua Gao, Zhuoduo Wang, Haitao Zhang, Xiaoqiu Zhou
Publikováno v:
Aquaculture Reports, Vol 27, Iss , Pp 101380- (2022)
This study was conducted to investigate the effects of tea tree essential oil (TTO) supplementation in low fish meal diet on growth, lipid metabolism, anti-oxidant capacity and immunity of largemouth bass (Micropterus salmoides). Five low fish meal (
Externí odkaz:
https://doaj.org/article/b251f162127846eb81604b60eaf38b67
Publikováno v:
Discrete Mathematics Letters, Vol 9, Pp 2-9 (2021)
Externí odkaz:
https://doaj.org/article/963ff170051548cbbb6bb9bacf3bf625
Publikováno v:
Transactions on Combinatorics, Vol 9, Iss 3, Pp 125-138 (2020)
Let $G$ be a connected graph with vertex set $V(G)=\{v_1, v_2,\ldots,v_n\}$. The distance matrix $D=D(G)$ of $G$ is defined so that its $(i,j)$-entry is equal to the distance $d_G(v_i,v_j)$ between the vertices $v_i$ and $v_j$ of $G$. The
Externí odkaz:
https://doaj.org/article/80f5ccc2bd134ddc9dfefad2d4f0eee6
Publikováno v:
AKCE International Journal of Graphs and Combinatorics, Vol 17, Iss 1, Pp 25-37 (2020)
For a molecular graph, the first Zagreb index of a graph is equal to the sum of squares of the vertex degrees of the graph and the forgotten topological index (F-index) of a graph is defined as the sum of cubes of the vertex degrees of the graph. The
Externí odkaz:
https://doaj.org/article/6f079d1a918f4b3185297660204a8ac1
Publikováno v:
Electronic Journal of Graph Theory and Applications, Vol 7, Iss 2, Pp 365-372 (2019)
Let G be a connected graph with vertex set V(G). The Harary index of a graph is defined as H(G) = ∑u ≠ v 1/d(u, v), where d(u, v) denotes the distance between u and v. In this paper, we determine the extremal graphs with the maximum Harary index
Externí odkaz:
https://doaj.org/article/2a207d38e7584907b9bbdb6ced7425cc