Results 51 to 60 of about 109,183 (305)

Coupling the valley degree of freedom to antiferromagnetic order

, 2012
Conventional electronics are based invariably on the intrinsic degrees of freedom of an electron, namely, its charge and spin. The exploration of novel electronic degrees of freedom has important implications in both basic quantum physics and advanced ...
Cao, Ting, Feng, Ji, Li, Xiao, Niu, Qian, Shi, Junren   +4 more
core   +1 more source

Degree-Based Topological Indices

Croatica Chemica Acta, 2013
The degree of a vertex of a molecular graph is the number of first neighbors of this vertex. A large number of molecular-graph-based structure descriptors (topological indices) have been conceived, depending on vertex degrees. We summarize their main properties, and provide a critical comparative study thereof.
openaire   +4 more sources

Degree and Neighborhood Degree Sum-based Topological Characteristics of Zosurabalpin: a Novel Drug for Managing Antibiotic-resistant Infection

Scientific Annals of Computer Science
This article is concerned with the topological characterization of the antibiotic Zosurabalpin through the computation of degree and associated neighborhood degree sum-based topological indices.
Shibsankar Das, Virendra Kumar, Jayjit Barman, Modhuleena Mandal, Arti Kumari   +4 more
doaj   +1 more source

Degree based topological indices of polysiloxanes

, 2021
Summary: Molecules can be modelled by graphs to obtain their required properties by means of only mathematical methods and formulae. In this paper, we consider several degree based topological graph indices of a chemical molecule called polysiloxanes.
Demirci, Musa, Cangül, Ismail Naci, Yurttaş Güneş, Aysun, Togan, Müge   +3 more
openaire   +3 more sources

Study of Neighborhood Degree-Based Topological Indices via Direct and NM-Polynomial of Starphene Graph

Journal of Function Spaces, 2022
Our objective is to compute the neighborhood degree-based topological indices via NM-polynomial for starphene. In the neighborhood degree-based topological indices, we compute the third version of the Zagreb index; neighborhood second Zagreb index ...
Deeba Afzal, Saira Hameed, Usman Ashraf, Arif Mehmood, Faryal Chaudhry, Dhan Kumari Thapa   +5 more
doaj   +1 more source

Symmetries and observables in topological gravity

, 2004
After a brief review of topological gravity, we present a superspace approach to this theory. This formulation allows us to recover in a natural manner various known results and to gain some insight into the precise relationship between different ...
Abe M, Aldo Deandrea, Baulieu L, Baulieu L, Baulieu L, Becchi C M, Becchi C M Imbimbo C, Bertlmann R A, Boldo J L, Chandía O, Chandía O, Clisthenis P Constantinidis, Constantinidis C P, Constantinidis C P, de Medeiros P, Eguchi T, François Gieres, Gieres F, Guo H Y, Kanno H, Kanno H, Lee H Y, Mardones A, Matthieu Lefrançois, Menaa M, Myers R, Nakamichi A, Nieh H T, Oda I, Oda I, Olivier Piguet, Perez A, Piguet O, Smolin L Starodubtsev A, Stora R Thuillier F Wallet J C R Coquereaux M Dubois-Violette P Flad, Tahiri M, Thiemann T, Witten E, Witten E, Witten E, Yu F   +40 more
core   +3 more sources

QSPR analysis of anti-hepatitis prescription drugs using degree based topological indices through M-polynomial and NM-polynomial

Chimica Techno Acta
Chemical graph theory plays a vital role in pharmaceutical research, particularly in the study of antiviral drugs such as those targeting hepatitis.
Adnan Asghar
semanticscholar   +1 more source

Extremal problems for degree-based topological indices

Discrete Applied Mathematics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yunfang Tang, Douglas B. West, Bo Zhou
openaire   +1 more source

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
doaj   +1 more source

Topological Characterization of the Third Type of Triangular Hex-derived Networks

Scientific Annals of Computer Science, 2021
A topological index is a numerical quantity that defines a chemical descriptor to report several physical, biological and chemical properties of a chemical structure. In recent literature, various degree-based topological indices of a molecular structure
Shibsankar Das, Shikha Rai
doaj   +1 more source