Results 81 to 90 of about 174,518,636 (296)
Bounding the feedback vertex number of digraphs in terms of vertex degrees
Discrete Applied Mathematics, 2011 The Turan bound is a famous result in graph theory, which relates the independence number of an undirected graph to its edge density. Also the Caro-Wei inequality, which gives a more refined bound in terms of the vertex degree sequence of a graph, might be regarded today as a classical result. We show how these statements can be generalized to directed
openaire +5 more sources
Critical Coupling in Semi‐Trasparent Fano Resonators for Photothermal Converters
Advanced Functional Materials, EarlyView.An ultrathin metal–insulator multilayer architecture is engineered to exploit Fano‐resonant critical coupling, completely suppressing optical reflectance while achieving a balanced 50:50 trade‐off between absorbance and transmittance. Upon laser excitation at resonance, the metamaterial generates intense localized heat (ΔT≈550∘C$\Delta T {\approx }550^\
Giuseppe Emanuele Lio +3 more
wiley +1 more source
Degree-constrained graph partition
, 2019 In this paper, we consider the task of partitioning a given graph intwo two non-empty subgraphs such that one of them has no vertex of degree less than 2, the other has no vertex of degree less than 3.
Thinh D. Nguyen (6385907)
core +1 more source
A SURVEY M-POLAR FUZZY GRAPHS [PDF]
Fiabilitate şi Durabilitate, 2019 I will begin with the presentation of the basic definitions required for the development of this survey- graph. Rosenfeld [17] first introduced the concept of fuzzy graphs. After that fuzzy graph theory becomes a vast research area.
Iuliana Carmen BĂRBĂCIORU
doaj
Towards plane spanners of degree 3
Journal of Computational Geometry, 2017 Let $S$ be a finite set of points in the plane. In this paper we consider the problem of computing plane spanners of degree at most three for $S$. • If $S$ is in convex position, then we present an algorithm that constructs a plane $\frac{3+4\pi}{3 ...
Ahmad Biniaz +5 more
doaj +1 more source
Beyond Primary Nucleation: Molecular Basis of Peptide Crystal Secondary Nucleation at Soft Interface
Advanced Functional Materials, EarlyView.High spatiotemporal‐resolution atomic force microscopy directly resolved peptide secondary nucleation (SN) and growth characteristics and mechanisms on HOPG. The landscape of peptide nucleation sites, growth dynamics, molecular‐scale structures, phase transitions, and cross‐seeding processes were realized.
Linhao Sun +2 more
wiley +1 more source
On relationship between reformulated Sombor and other vertex--degree indices [PDF]
Let $G=(V,E)$, $V=\{v_1, v_2,\ldots,v_n\}$, $E=\{e_1, e_2,\ldots,e_m\}$, be a simple connected graph with $n\ge 2$ vertices and $m$ edges, with vertex degree sequence $\Delta=d_1\ge d_2\ge \cdots \ge d_n=\delta$, $ d_i=d(v_i)$, and edge degree sequence $\
Emina Milovanovic +4 more
core +2 more sources
On topological analysis of two-dimensional covalent organic frameworks via M-polynomial
Scientific ReportsCovalent organic frameworks (ZnP-COFs) made of zinc-porphyrin have become effective materials with a variety of uses, including gas storage and catalysis.
Hong Yang +5 more
doaj +1 more source
On the Number of Spanning Trees of Graphs
The Scientific World Journal, 2014 We establish some bounds for the number of spanning trees of connected graphs in terms of the number of vertices (n), the number of edges (m), maximum vertex degree (Δ1), minimum vertex degree (δ), first Zagreb index (M1), and Randić index (R-1).
Ş. Burcu Bozkurt, Durmuş Bozkurt
doaj +1 more source
Advanced Healthcare Materials, EarlyView.Polymer‐coated IONPs functionalized with IL‐4 display respective neuroactive and anti‐inflammatory actions on neural progenitor cells and macrophages/microglia in vitro. When examined chronically in a rat experimental model of spinal cord injury, rGO scaffolds carrying these nanosystems adequately integrate into the lesion, significantly reduce ...
Julia Martínez‐Ramírez +12 more
wiley +1 more source