Results 41 to 50 of about 5,113,672 (306)

On The Forgetten Topological Index and Co Index

open access: yesEuropean Journal of Science and Technology, 2019
G’ nin unutulmus topolojiksel indeksi 𝑑𝑖 ve 𝑑𝑗 dereceleriyle tanimlanir. Bu makalede, unutulmus topolojiksel indeksin ozdegerleri icin bazi sinirlar bulunmustur ve unutulmus Estrada topolojiksel indeks ile ilgili bazi esitsizlikler belirlenmistir.
openaire   +3 more sources

Topological Formulas for Free-Valence Index [PDF]

open access: yes, 1978
Four topological identities (5), (6), (7) and (9) for free-valence index are ...
Gutman, I.
core   +1 more source

Entire forgotten topological index of graphs

open access: yes, 2020
The Forgotten topological index or F-index is defined as the sum of cubes of the degrees of vertices of a graph. For this classical F-index, we ignore the intermolecular forces that exist between the atoms and bonds and consider only the intermolecular ...
Buragohain, Jibonjyoti   +2 more
core   +1 more source

The topological period-index problem over 8-complexes, II [PDF]

open access: yes, 2020
We complete the study of the topological period-index problem over 8dimensional finite CW complexes started in a preceding paper. More precisely,we determine the sharp upper bound of the index of a topological Brauer class$\alpha\in H^3(X;\mathbb{Z ...
Gu, X. ; https://orcid.org/
core   +1 more source

Topological States of Matter [PDF]

open access: yes, 2012
My research program is focused on the study of elastic deformation and topological defects in two materials: graphene and topological insulators. In both systems at low energies the electrons have a nearly linear spectrum, i.e.
Parente, Vincenzo
core   +1 more source

On the Computation of Some Topological Descriptors to Find Closed Formulas for Certain Chemical Graphs

open access: yesJournal of Chemistry, 2021
In this research paper, we will compute the topological indices (degree based) such as the ordinary generalized geometric-arithmetic (OGA) index, first and second Gourava indices, first and second hyper-Gourava indices, general Randic´ index RγG,for γ=±1,
Muhammad Haroon Aftab   +3 more
doaj   +1 more source

Degree-Based Graph Entropy in Structure–Property Modeling

open access: yesEntropy, 2023
Graph entropy plays an essential role in interpreting the structural information and complexity measure of a network. Let G be a graph of order n. Suppose dG(vi) is degree of the vertex vi for each i=1,2,…,n.
Sourav Mondal, Kinkar Chandra Das
doaj   +1 more source

Improving Probabilistic Flooding Using Topological Indexes [PDF]

open access: yes2019 15th International Conference on Signal-Image Technology & Internet-Based Systems (SITIS), 2019
Unstructured networks are characterized by constrained resources and require protocols that efficiently utilize bandwidth and battery power. Probabilistic flooding, allows nodes to rebroadcast RREQ packets with some probability p, thus reducing the overhead. The key issue in of this algorithm consists of determining p.
Kifle, D, Gianini, G, Libsie, M
openaire   +2 more sources

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Topological Steric Effect Index and Its Application. [PDF]

open access: yesChemInform, 2004
This paper proposed a Topological Steric Effect Index (TSEI) of a group based on the relative specific volume of the reaction center screened by the atoms of the substituents. Investigated results show good correlations between the parameter TSEI and the dihedral angles between both phenyl rings determined by photoelectron spectroscopy for 7 ...
Chenzhong Cao, Li Liu
openaire   +2 more sources

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