Results 231 to 240 of about 4,479,442 (268)
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A note lower bounds for the Estrada index
Discrete Mathematics, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jonnathan Rodríguez +2 more
exaly +3 more sources
The Estrada index of evolving graphs
Applied Mathematics and Computation, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
YILUN Shang
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On the Estrada Index of Graphene Graph
Polycyclic Aromatic Compounds, 2022Let G be a graph on n vertices. The Estrada index and Energy of G are invariants that are calculated from the eigenvalues of the adjacency matrix of a graph.
Jésica Pantáz, Jonnathan Rodríguez
semanticscholar +2 more sources
On the extended Estrada index of some graphs
Applied Mathematics and Computation, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sujuan Liu
exaly +2 more sources
The Estrada index of chemical trees
Journal of Mathematical Chemistry, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dragan Stevanovic +2 more
exaly +3 more sources
On the Seidel Estrada index of graphs
Linear and multilinear algebra, 2023For a simple graph G on n vertices the Seidel Estrada index of G, denoted by $ SEE(G) $ SEE(G), is defined as $ SEE(G)=\sum _{i=1}^ne^{\theta _i} $ SEE(G)=∑i=1neθi, where $ \theta _1,\ldots,\theta _n $ θ1,…,θn are the Seidel eigenvalues (the eigenvalues ...
M. Oboudi
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On the spectral radius, energy and Estrada index of the arithmetic-geometric matrix of a graph
Discret. Math. Algorithms Appl., 2021Let [Formula: see text] be a simple undirected graph with vertex set [Formula: see text]. The arithmetic–geometric matrix [Formula: see text] of a graph [Formula: see text] is defined so that its [Formula: see text]-entry is equal to [Formula: see text ...
Zhen Lin, Bo Deng, L. Miao, He Li
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On generalized adjacency Estrada index of graphs
Discrete Mathematics, Algorithms and Applications, 2021The Estrada index is a graph-spectrum-based invariant having an important role in chemistry and physics. In this paper, we define the generalized adjacency Estrada index of a graph and obtain some lower and upper bounds for the generalized adjacency Estrada index in terms of various graph parameters associated with the structure of a graph.
Maryam Baghipur, Harishchandra S. Ramane
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The maximum Laplacian Estrada index of connected graphs
Linear and multilinear algebra, 2022Let G be a simple graph on n vertices. The Laplacian Estrada index of G is defined as , where are the Laplacian eigenvalues of G. In this paper, we characterize the connected -graph with the maximum Laplacian Estrada index for .
Haixia Zhang, Ning Zhang, Zhuolin Zhang
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