Results 51 to 60 of about 58,831 (310)
Graph Theory versus Minimum Rank for Index Coding
, 2014 We obtain novel index coding schemes and show that they provably outperform all previously known graph theoretic bounds proposed so far. Further, we establish a rather strong negative result: all known graph theoretic bounds are within a logarithmic ...
Dimakis, Alexandros G. +2 more
core +1 more source
A generalization of chromatic index
Discrete Mathematics, 1994 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sampathkumar, E., Kamath, G.D.
openaire +1 more source
Zero Divisor Graph Of ZpM qr with Applications [PDF]
Al-Rafidain Journal of Computer Sciences and Mathematics, 2020 In this paper, we study zero-divisor graph of the ring Zpmqr and give some properties of this graph. Also, we find the chromatic number, Hosoya polynomial and Wiener index of this graph.
Nazar Shuker +2 more
doaj +1 more source
Oriented Incidence Colourings of Digraphs
Discussiones Mathematicae Graph Theory, 2019 Brualdi and Quinn Massey [6] defined incidence colouring while study- ing the strong edge chromatic index of bipartite graphs. Here we introduce a similar concept for digraphs and define the oriented incidence chromatic number.
Duffy Christopher +3 more
doaj +1 more source
Dispersion and nonlinearity properties of small solid-core photonic fibers with As2Se3 substrate
Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2021 Characteristics of As2Se3 photonic crystal fibers (PCFs) with a solid-core and small-core diameter are numerically investigated in the long-wavelength range (from 2 to 10 μm).
Thi Thuy Nguyen +4 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr +7 more
wiley +1 more source
The strong chromatic index of 1-planar graphs [PDF]
Discrete Mathematics & Theoretical Computer ScienceThe chromatic index $\chi'(G)$ of a graph $G$ is the smallest $k$ for which $G$ admits an edge $k$-coloring such that any two adjacent edges have distinct colors.
Yiqiao Wang +3 more
doaj +1 more source
Acyclic chromatic index of fully subdivided graphs and Halin graphs [PDF]
Discrete Mathematics & Theoretical Computer Science, 2012 Graph ...
Manu Basavaraju
doaj +1 more source
The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters
Advanced Functional Materials, EarlyView.A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul +4 more
wiley +1 more source
Chromatic Properties of the Pancake Graphs
Discussiones Mathematicae Graph Theory, 2017 Chromatic properties of the Pancake graphs Pn, n ⩾ 2, that are Cayley graphs on the symmetric group Symn generated by prefix-reversals are investigated in the paper.
Konstantinova Elena
doaj +1 more source