Zobrazeno 1 - 10
of 170
pro vyhledávání: '"J. A. Méndez-Bermúdez"'
Publikováno v:
Mathematical Biosciences and Engineering, Vol 20, Iss 2, Pp 1801-1819 (2023)
In this paper, we perform analytical and statistical studies of Revan indices on graphs $ G $: $ R(G) = \sum_{uv \in E(G)} F(r_u, r_v) $, where $ uv $ denotes the edge of $ G $ connecting the vertices $ u $ and $ v $, $ r_u $ is the Revan degree of t
Externí odkaz:
https://doaj.org/article/586b3fb15a2c48d8a9eabfb199a19403
Publikováno v:
Mathematical Biosciences and Engineering, Vol 19, Iss 9, Pp 8908-8922 (2022)
The aim of this work is to obtain new inequalities for the variable symmetric division deg index $ SDD_\alpha(G) = \sum_{uv \in E(G)} (d_u^\alpha/d_v^\alpha+d_v^\alpha/d_u^\alpha) $, and to characterize graphs extremal with respect to them. Here, by
Externí odkaz:
https://doaj.org/article/da8b721cbc744f5e84fece60b9d10c71
Publikováno v:
Journal of Physics: Complexity, Vol 4, Iss 1, p 015002 (2022)
In this work we analyze structural and spectral properties of a model of directed random geometric graphs: given n vertices uniformly and independently distributed on the unit square, a directed edge is set between two vertices if their distance is s
Externí odkaz:
https://doaj.org/article/d4b1eb5d3d9a4a988e24c01e1ada3638
Publikováno v:
Entropy, Vol 23, Iss 8, p 976 (2021)
We perform a detailed computational study of the recently introduced Sombor indices on random networks. Specifically, we apply Sombor indices on three models of random networks: Erdös-Rényi networks, random geometric graphs, and bipartite random ne
Externí odkaz:
https://doaj.org/article/2b16705746e54cc48eaf4196923ec333
Publikováno v:
Physical Review E. 107
An extensive numerical analysis of the scattering and transport properties of the power-law banded random matrix model (PBRM) at criticality in the presence of orthogonal, unitary, and symplectic symmetries is presented. Our results show a good agree
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e57ba5c372bd7fd2f3db14d16559e162
https://doi.org/10.1103/physreve.107.024139
https://doi.org/10.1103/physreve.107.024139
Publikováno v:
Symmetry, Vol 12, Iss 8, p 1341 (2020)
We perform a detailed (computational) scaling study of well-known general indices (the first and second variable Zagreb indices, M1α(G) and M2α(G), and the general sum-connectivity index, χα(G)) as well as of general versions of indices of intere
Externí odkaz:
https://doaj.org/article/a2db8714df224dff96efa5d033f85a4a
We study the localization properties of normal modes in harmonic chains with mass and spring weak disorder. Using a perturbative approach, an expression for the localization length is obtained, which is valid for arbitrary correlations of the disorde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5abb1a42599e050ce2f64ef9db25e6c2
http://arxiv.org/abs/2210.12561
http://arxiv.org/abs/2210.12561
Publikováno v:
Journal of Mathematical Chemistry. 59:1246-1259
In this work we perform analytical and statistical studies of the Rodriguez–Velazquez (RV) indices on graphs G. The topological RV(G) indices, recently introduced in Rodriguez–Velazquez and Balaban (J Math Chem 57:1053, 2019), are based on graph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23ffb390899df531cb37a548ad353867
https://doi.org/10.1007/s10910-021-01239-1
https://doi.org/10.1007/s10910-021-01239-1
Publikováno v:
Entropy, Vol 21, Iss 1, p 86 (2019)
We study the localization properties of the eigenvectors, characterized by their information entropy, of tight-binding random networks with balanced losses and gain. The random network model, which is based on Erdős–Rényi (ER) graphs, is defined
Externí odkaz:
https://doaj.org/article/c5f9672555f64b8f86b6d9f5f354cb87
Publikováno v:
AIMS Mathematics, Vol 6, Iss 10, Pp 10449-10465 (2021)
The aim of this paper is to establish a representation formula for the solutions of the Lamé-Navier system in linear elasticity theory. We also study boundary value problems for such a system in a bounded domain $ \Omega\subset {\mathbb R}^3 $, allo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::704afec3cb276baf6d25aef7660d3a14
https://doi.org/10.3934/math.2021606
https://doi.org/10.3934/math.2021606