Results 21 to 30 of about 339,685 (278)
A Sharp upper bound for the spectral radius of a nonnegative matrix and applications [PDF]
, 2016 In this paper, we obtain a sharp upper bound for the spectral radius of a nonnegative matrix. This result is used to present upper bounds for the adjacency spectral radius, the Laplacian spectral radius, the signless Laplacian spectral radius, the ...
Shu, Yujie, You, Lihua, Zhang, Xiao-Dong
core +2 more sources
The secondary star and distance of the polar V1309 Ori [PDF]
, 2006 The first phase-resolved JHK light curves of the eclipsing polar (AM Herculis binary) V1309 Ori are presented and interpreted. We separate the contributions from the secondary star and from other sources with the aim of determining a photometric distance.
Bailey +26 more
core +2 more sources
On the General Sum Distance Spectra of Digraphs
Mathematics, 2023 Let G be a strongly connected digraph, and dG(vi,vj) denote the distance from the vertex vi to vertex vj and be defined as the length of the shortest directed path from vi to vj in G.
Weige Xi +3 more
doaj +1 more source
Upper and Lower Bounds for the Spectral Radius of Generalized Reciprocal Distance Matrix of a Graph
Mathematics, 2022 For a connected graph G on n vertices, recall that the reciprocal distance signless Laplacian matrix of G is defined to be RQ(G)=RT(G)+RD(G), where RD(G) is the reciprocal distance matrix, RT(G)=diag(RT1,RT2,⋯,RTn) and RTi is the reciprocal distance ...
Yuzheng Ma, Yubin Gao, Yanling Shao
doaj +1 more source
Some inequalities involving the distance signless Laplacian eigenvalues of graphs [PDF]
Transactions on Combinatorics, 2021 Given a simple graph $G$, the distance signlesss Laplacian $D^{Q}(G)=Tr(G)+D(G)$ is the sum of vertex transmissions matrix $Tr(G)$ and distance matrix $D(G)$.
Abdollah Alhevaz +3 more
doaj +1 more source
On distance spectral radius of graphs
Linear Algebra and its Applications, 2013 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Yanna, Zhou, Bo
openaire +1 more source
Experimental realization of a Fresnel hologram as a super spectral resolution optical element
Scientific Reports, 2021 A highly dispersive, diffractive optical element is designed and realized for an extremely high spectral resolution spectroscopy for exoplanet telescope application.
Mei-Li Hsieh +5 more
doaj +1 more source
Combined Spectral and Timing Analysis of the Black Hole Candidate MAXI J1659-152 Discovered by MAXI and Swift [PDF]
, 2011 We report on X-ray spectral and timing results of the new black hole candidate (BHC) MAXI J1659-152 with the orbital period of 2.41 hours (shortest among BHCs) in the 2010 outburst from 65 Rossi X-ray Timing Explorer (RXTE) observations and 8 ...
Allured, Ryan +14 more
core +3 more sources
On distance spectral radius of uniform hypergraphs [PDF]
Linear and Multilinear Algebra, 2017 The distance spectral radius of a connected hypergraph is the largest eigenvalue of its distance matrix. We determine the unique connected k-uniform hypergraphs with minimum distance spectral radius when the number of pendant edges is given, the unique k-uniform non-hyperstar-like hypertrees (non-hyper-caterpillars, respectively) with minimum distance ...
Hongying Lin, Bo Zhou, Yaduan Li
openaire +1 more source
On the distance energy of k-uniform hypergraphs
Special Matrices, 2023 In this article, we extend the concept of distance energy for hypergraphs. We first establish a relation between the distance energy and the distance spectral radius.
Sharma Kshitij, Panda Swarup Kumar
doaj +1 more source