Results 21 to 30 of about 120 (72)
Social Capital, Creative Destruction and Economic Development [PDF]
, 2005 This paper develops a conceptual framework for the role of social capital in the political economy of innovation, growth and reform, with illustrations from developing and transition countries.
Bezemer, Dirk +2 more
core +4 more sources
Disproof of a conjecture on the minimum Wiener index of signed trees
, 2022 The Wiener index of a connected graph is the sum of distances between all unordered pairs of vertices. Sam Spiro [The Wiener index of signed graphs, Appl. Math.
Guo, Songlin, Wang, Chuanming, Wang, Wei
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Bounds for the Gutman-Milovanovic index and some applications [PDF]
In this paper, we examine the Gutman-Milovanovic index and establish new upper and lower bounds for it. These bounds include terms related to the general sum connectivity index, the general second Zagreb index, and the hyperbolicity constant of the ...
Granados, Ana +3 more
core +2 more sources
Main Group Metal ChemistrySilane compounds are a class of chemical compounds composed of silicon (Si) and hydrogen (H), characterized by the general formula SiH4−xRx{{\rm{SiH}}}_{4-x}{R}_{x}, where RR represents various organic groups. The simplest member of this family is silane
Zhang Xiujun +4 more
doaj +1 more source
Journal of Mathematics, Volume 2026, Issue 1, 2026.In this article, the first eccentricity connectivity coindex is introduced as ECI¯G=∑uv∉EGε2u+ε2v, in which ε(u) denotes the eccentricity of the vertex u in the simple connected graph G. Then, the exact expressions are obtained for the first eccentricity connectivity coindex of some graph products.
Suha Wazzan +2 more
wiley +1 more source
Mathematical and chemistry properties of geometry-based invariants
, 2022 Recently, based on elementary geometry, Gutman proposed several geometry-based invariants (i.e., $SO$, $SO_{1}$, $SO_{2}$, $SO_{3}$, $SO_{4}$, $SO_{5}$, $SO_{6}$). The Sombor index was defined as $SO(G)=\sum\limits_{uv\in E(G)}\sqrt{d_{u}^{2}+d_{v}^{2}}$,
Liu, Hechao
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Computational and Mathematical Methods, Volume 2025, Issue 1, 2025.The generalized Mycielskian graphs are known for their advantageous properties employed in interconnection networks in parallel computing to provide efficient and optimized network solutions. This paper focuses on investigating the bounds and computation of the harmonic–arithmetic index of the generalized Mycielskian graph of path graph, cycle graph ...
Pooja Danushri Namidass +2 more
wiley +1 more source
, 2023 Let R be a ring (not necessarily commutative ring) with identity. The clean graph Cl(R) of a ring R is a graph with vertices in the form of ordered pair (e; u), where e is an idempotent of the ring R and u is a unit of the ring R.
Patekar, S. C., Singh, Randhir
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International Journal of Mathematics and Mathematical Sciences, Volume 2025, Issue 1, 2025.Graph theory combined with chemistry provides a strong framework for modeling and assessing chemical compounds. By representing molecules as graphs and applying topological indices, chemists can gain profound insights into the physical and chemical characteristics of compounds.
Kalpana R. +2 more
wiley +1 more source
Extremal polygonal chains with respect to the Kirchhoff index
, 2023 The Kirchhoff index is defined as the sum of resistance distances between all pairs of vertices in a graph. This index is a critical parameter for measuring graph structures.
Ma, Qi
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