Results 91 to 100 of about 202 (134)

Topological Indices and New Graph Structures

, 2012
A topological representation of a molecule can be carried out through molecular graph. The descriptors are numerical values associated with chemical constitution for correlation of chemical structure with various physical properties, chemical reactivity ...
S Ramakrishnan, J Baskar Babujee
core  

On zero-divisors of near-rings of polynomials

, 2019
In this paper, we are interested to study zero-divisor properties of a 0- symmetric nearring of polynomials R0[x], when R is a commutative ring. We show that for a reduced ring R, the set of all zero-divisors of R0[x], namely Z(R0[x]), is an ideal of R0 ...
Shokuhifar, Fatemeh, Hashemi, Ebrahim, Alhevaz, Abdollah   +2 more
core  

Biochemical phenotyping of paroxysmal nocturnal hemoglobinuria reveals solute carriers and β-oxidation deficiencies. [PDF]

PLoS One, 2023
Yamakawa PE, Fonseca AR, Guerreiro da Silva IDC, Gonçalves MV, Marchioni DM, Carioca AAF, Michonneau D, Arrais-Rodrigues C.   +7 more
europepmc   +1 more source

Four-point condition matrices of edge-weighted trees

Special Matrices
Formulas for the determinant of distance matrix DT{D}_{T} of tree TT are known in the unweighted case and in the case when the edges of TT have commuting variable weights. Associated with the four-point condition (4PC) and a tree TT are two matrices, the
Azimi Ali, Jana Rakesh, Nagar Mukesh K., Sivasubramanian Sivaramakrishnan   +3 more
doaj   +1 more source

Leap Zagreb indices of certain chemical structures: a topological analysis

Main Group Metal Chemistry
Topological indices serve as important molecular descriptors in quantitative structure–property relationship (QSPR) and quantitative structure–activity relationship (QSAR) studies.
Rehman Masood Ur, Cai Gaixiang, Iqbal Javaria, Salman Muhammad   +3 more
doaj   +1 more source

A note on the edge general position number of cactus graphs

Open Mathematics
For a given graph G, a subset S of E(G) is an edge general position set of G if no triple of S is contained in a common shortest path. The cardinality of a largest edge general position set of G is called the edge general position number of G, denoted by
Cao Yahan, Ji Shengjin
doaj   +1 more source

Comparing the excepted values of atom-bond connectivity and geometric-arithmetic indices in random spiro chains. [PDF]

J Inequal Appl, 2018
Wei S, Ke X, Hao G.
europepmc   +1 more source

Distance-based topological polynomials and indices of friendship graphs. [PDF]

Springerplus, 2016
Gao W, Farahani MR, Imran M, Rajesh Kanna MR.   +3 more
europepmc   +1 more source

Sombor characteristic values of cographs. [PDF]

Heliyon
Raza Z, Rather BA, Imran M.
europepmc   +1 more source

On the Laplacian spectral radii of Halin graphs. [PDF]

J Inequal Appl, 2017
Jia H, Xue J.
europepmc   +1 more source