Results 31 to 40 of about 1,075 (167)
Hosoya, Schultz, and Gutman Polynomials of Generalized Petersen Graphs Pn,1 and Pn,2
Journal of Mathematics, 2023 The graph theory has wide important applications in various other types of sciences. In chemical graph theory, we have many topological polynomials for a graph G through which we can compute many topological indices.
Ramy Shaheen +2 more
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Diversity, 2021 Egypt is characterized by its hyper-arid desert environment with high temperature, scanty rainfall, high evapotranspiration rate, and patchy scattered precipitation-dependent vegetation.
Ethar A. Hussein +3 more
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Note on the Hyper-Wiener Index [PDF]
Journal of the Serbian Chemical Society, 2003 The hyper-Wiener index WW of a chemical tree T is defined as the sum of the products n1n2, over all pairs u, u of vertices of T, where n1 and n2 are the number of vertices of T, lying on the two sides of the path which connects u and u.
IVAN GUTMAN +2 more
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Hyper-Wiener indices of polyphenyl chains and polyphenyl spiders
Open Mathematics, 2019 Let G be a connected graph and u and v two vertices of G. The hyper-Wiener index of graph G is WW(G)=12∑u,v∈V(G)(dG(u,v)+dG2(u,v))$\begin{array}{} WW(G)=\frac{1}{2}\sum\limits_{u,v\in V(G)}(d_{G}(u,v)+d^{2}_{G}(u,v)) \end{array}$, where dG(u, v) is the ...
Wu Tingzeng, Lü Huazhong
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Molecular Topology Index of a Zero Divisor Graph on a Ring of Integers Modulo Prime Power Order
Contemporary Mathematics and Applications (ConMathA)In chemistry, graph theory has been widely utilized to address molecular problems, with numerous applications in graph theory and ring theory within this field.
Didit Satriawan +4 more
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The Journal of Humanistic Counseling, EarlyView.ABSTRACT This article examines the future place of humanistic counseling, assuming the successful mass deployment of artificial intelligence therapy chatbots (AITCs). We systematically identify the limitations of AITCs through the lens of Jean Baudrillard's view on simulacra and hyperreality and identify five collective psychosocial consequences of ...
Brett. D. Wilkinson, Andrew M. Brown
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Three Methods for Calculation of the Hyper-Wiener Index of Molecular Graphs [PDF]
Journal of Chemical Information and Computer Sciences, 2002 The hyper-Wiener index WW of a graph G is defined as WW(G) = (summation operator d (u, v)(2) + summation operator d (u, v))/2, where d (u, v) denotes the distance between the vertices u and v in the graph G and the summations run over all (unordered) pairs of vertices of G.
Gordon G. Cash +2 more
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Mathematical Methods in the Applied Sciences, EarlyView.We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés +2 more
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Journal of Chemistry, 2019 In this paper, with respect to the Wiener index, hyper-Wiener index, and Harary index, it gives some sufficient conditions for some graphs to be traceable, Hamiltonian, Hamilton-connected, or traceable for every vertex.
Guisheng Jiang, Lifang Ren, Guidong Yu
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Science Education, EarlyView.ABSTRACT This study examines how integrating sustainability through socio‐scientific issue (SSI) in secondary chemistry teaching shapes epistemic openness and closure from a decolonial perspective, as mediated through classroom discourse. Drawing on a co‐planned lesson on copper mining in Chile – a scientifically rich yet ethically and politically ...
Denise Quiroz‐Martínez
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