Results 21 to 30 of about 350,941 (326)

Existence of solutions to second-order boundary value problems without growth restrictions

Electronic Journal of Qualitative Theory of Differential Equations, 2016
This article investigates nonlinear, second-order ordinary differential equations subject to various two-point boundary conditions. A condition is introduced that ensures a priori bounds on the derivatives of solutions to the problem.
Christopher Tisdell
doaj   +1 more source

Multiplicative topological indices of honeycomb derived networks

Open Physics, 2019
Topological indices are the numerical values associated with chemical structures that correlate physico-chemical properties with structural properties.
Tang Jiang-Hua, Habib Mustafa, Younas Muhammad, Yousaf Muhammad, Nazeer Waqas   +4 more
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On a sign-changing solution for some fractional differential equations

Boundary Value Problems, 2017
In this paper, a kind of αth ( 3 < α ≤ 4 ...
Kemei Zhang
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M-Polynomials and Degree-Based Topological Indices of the Molecule Copper(I) Oxide

Journal of Chemistry, 2021
Topological indices are numerical parameters used to study the physical and chemical residences of compounds. Degree-based topological indices have been studied extensively and can be correlated with many properties of the understudy compounds.
Faryal Chaudhry, Iqra Shoukat, Deeba Afzal, Choonkil Park, Murat Cancan, Mohammad Reza Farahani   +5 more
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Degree-Based Topological Indices of Boron B12

Journal of Chemistry, 2021
Topological index sometimes called molecular descriptor is a numerical value which associates a chemical composition for correlating chemical structure with numerous physical properties, chemical reactivity, or biological activity.
Nouman Saeed, Kai Long, Zeeshan Saleem Mufti, Hafsa Sajid, Abdul Rehman   +4 more
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Topological Spin Texture in a Quantum Anomalous Hall Insulator [PDF]

, 2014
The quantum anomalous Hall (QAH) effect has been recently discovered in experiment using thin-film topological insulator with ferromagnetic ordering and strong spin-orbit coupling.
Liu, Jie, Liu, Xiong-Jun, Wu, Jiansheng
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Convergence Classes of L-Filters in L,M-Fuzzy Topological Spaces

Journal of Mathematics, 2021
An L,M-fuzzy topological convergence structure on a set X is a mapping which defines a degree in M for any L-filter (of crisp degree) on X to be convergent to a molecule in LX.
Ting Yang, Sheng-Gang Li, William Zhu, Xiao-Fei Yang, Ahmed Mostafa Khalil   +4 more
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Marginal topological properties of graphene: a comparison with topological insulators

, 2012
The electronic structures of graphene systems and topological insulators have closely-related features, such as quantized Berry phase and zero-energy edge states. The reason for these analogies is that in both systems there are two relevant orbital bands,
Alberto F Morpurgo, Delplace P Ullmo D Montambaux G, Ivar Martin, Jian Li, Markus Büttiker, Martin I, Volovik G   +6 more
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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

Topological Degree via a Degree of Nondensifiability and Applications

Axioms
The goal of this work is to introduce the notion of topological degree via the principle of the degree of nondensifiability (DND for short). We establish some new fixed point theorems, concerning, Schaefer’s fixed point theorem and the nonlinear ...
Noureddine Ouahab, Juan J. Nieto, Abdelghani Ouahab   +2 more
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