Results 31 to 40 of about 4,006,976 (265)
Two Degree Distance Based Topological Indices of Chemical Trees
IEEE Access, 2019 Let G = (VG, EG) be a simple and connected graph. The eccentric connectivity index of G is represented as ξc(G) = Σx∈VG degG(x)ecG(x), where degG(x) and ecG(x) represent the degree and the eccentricity of x, respectively.
Shehnaz Akhter
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Computing Eccentricity-Based Topological Indices of 2-Power Interconnection Networks
Journal of Chemistry, 2020 In a connected graph G with a vertex v, the eccentricity εv of v is the distance between v and a vertex farthest from v in the graph G. Among eccentricity-based topological indices, the eccentric connectivity index, the total eccentricity index, and the ...
Muhammad Imran +5 more
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Eccentricity-Based Topological Invariants of Dominating David-Derived Networks
Journal of Chemistry, 2021 A topological index is a numerical descriptor of the molecular structure based on certain topological features of the corresponding molecular graph. Topological indices are scientific contemplations of a graph that outline its subatomic topology and are ...
Muhammad Imran +2 more
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Bounds for the modified eccentric connectivity index
CoRR, 2014 The modified eccentric connectivity index of a graph is defined as the sum of the products of eccentricity with the total degree of neighboring vertices, over all vertices of the graph. This is a generalization of eccentric connectivity index. In this paper, we derive some upper and lower bounds for the modified eccentric connectivity index in terms of
Nilanjan De +2 more
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Eccentricity-Based Topological Invariants of Some Chemical Graphs
Atoms, 2019 Topological index is an invariant of molecular graphs which correlates the structure with different physical and chemical invariants of the compound like boiling point, chemical reactivity, stability, Kovat’s constant etc.
Nazeran Idrees +2 more
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Extremal results on the eccentric connectivity index [PDF]
, 2019 The eccentric connectivity index of a connected graph is the sum over all vertices of the product between eccentricity (maximum distance to any other vertex) and degree.
Hauweele, Pierre +4 more
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Eccentric topological properties of a graph associated to a finite dimensional vector space
Main Group Metal Chemistry, 2020 A topological index is actually designed by transforming a chemical structure into a number. Topological index is a graph invariant which characterizes the topology of the graph and remains invariant under graph automorphism.
Liu Jia-Bao +5 more
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Eccentric connectivity index in transformation graph Gxy+
Acta Universitatis Sapientiae, Informatica, 2023 Abstract Let G be a connected graph with vertex set V(G)and edge set E(G). The eccentric connectivity index of G is defined as ∑
Aytaç, Aysun, Vatansever, Belgin
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Meitan xuebao, 2023 The coupling failure induced by the influence of mining practice and the water immersion softening of the water-resisting coal pillars in old goaf is one of the common causes of water inrush accidents in the same seam working face.
Zhu LI +5 more
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction This final analysis of a multicenter, prospective postmarketing surveillance study evaluated the safety of daprodustat in patients with chronic kidney disease anemia in routine clinical practice in Japan. Methods Patients who initiated daprodustat between September 2020 and July 2022 were registered.
Tadao Akizawa +7 more
wiley +1 more source