Results 31 to 40 of about 351,014 (282)
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 +6 more
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Some mappings with topological degree zero [PDF]
Proceedings of the American Mathematical Society, 1956 is sometimes proved by determining the topological degree of M at q. If the degree is different from zero, the equation has a solution. However if the degree is zero, then purely topological considerations give practically no information about solutions. The advantage of the topological degree approach is that comparatively little information about the
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Asymptotic Distribution of Degree-Based Topological Indices
Match - Communications in Mathematical and in Computer Chemistry, 2023 Topological indices play a significant role in mathematical chemistry. Given a graph $\mathcal{G}$ with vertex set $\mathcal{V}=\{1,2,\dots,n\}$ and edge set $\mathcal{E}$, let $d_i$ be the degree of node $i$. The degree-based topological index is defined as $\mathcal{I}_n=$ $\sum_{\{i,j\}\in \mathcal{E}}f(d_i,d_j)$, where $f(x,y)$ is a symmetric ...
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Journal of Inequalities and Applications, 2017 In this paper, the problem of the existence of a periodic solution is studied for the second order differential equation with a singularity of repulsive type x ″ ( t ) + f ( x ( t ) ) x ′ ( t ) − g ( x ( t ) ) + φ ( t ) x ( t ) = h ( t ) , $$x''(t)+f ...
Shiping Lu
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Potential therapeutic targeting of BKCa channels in glioblastoma treatment
Molecular Oncology, EarlyView.This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak +4 more
wiley +1 more source
Computation of Revan Topological Indices for Phenol-Formaldehyde Resin
Journal of Mathematics, 2022 Phenol-formaldehyde resin has a wide range of moldings. The phenolic resin retains properties at the freezing point; hence, it is difficult to determine its age.
Muhammad Kamran +5 more
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Subtype‐specific enhancer RNAs define transcriptional regulators and prognosis in breast cancers
Molecular Oncology, EarlyView.This study employed machine learning methodologies to perform the subtype‐specific classification of RNA‐seq data sets, which are mapped on enhancers from TCGA‐derived breast cancer patients. Their integration with gene expression (referred to as ProxCReAM eRNAs) and chromatin accessibility profiles has the potential to identify lineage‐specific and ...
Aamena Y. Patel +6 more
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Vertex-Edge-Degree-Based Topological Properties for Hex-Derived Networks
Complexity, 2022 A topological index can be focused on uprising of a chemical structure into a real number. The degree-based topological indices have an active place among all topological indices.
Ali Ahmad, Muhammad Imran
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Orientability of Fredholm families and topological degree [PDF]
, 1994 We construct a degree theory for oriented Fredholm mappings of index zero between open subsets of Banach spaces and between Banach manifolds. Our approach is based on the orientation of Fredholm mappings: it does not use Fredholm structures on the domain
Fitzpatrick, P. +2 more
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Magnetic monopoles in a charged two-condensate Bose-Einstein system
, 2004 We propose that a charged two-condensate Bose system possesses point-like topological defects which can be interpreted as magnetic monopoles. By making use of the $\phi$-mapping theory, the topological charges of these magnetic monopoles can be expressed
Jiang, Ying
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