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On minimum intersections of certain secondary dominating sets in graphs [PDF]

open access: yesOpuscula Mathematica, 2023
In this paper we consider secondary dominating sets, also named as \((1,k)\)-dominating sets, introduced by Hedetniemi et al. in 2008. In particular, we study intersections of the \((1,1)\)-dominating sets and proper \((1,2)\)-dominating sets.
Anna Kosiorowska   +2 more
doaj   +1 more source

$L^p$-$L^q$ Boundedness of Spectral Multipliers of the Anharmonic Oscillator

open access: yesComptes Rendus. Mathématique, 2022
In this note we study the $L^p-L^q$ boundedness of Fourier multipliers of anharmonic oscillators, and as a consequence also of spectral multipliers, for the range ...
Chatzakou, Marianna, Kumar, Vishvesh
doaj   +1 more source

Local irregularity conjecture for 2-multigraphs versus cacti [PDF]

open access: yesOpuscula Mathematica, 2023
A multigraph is locally irregular if the degrees of the end-vertices of every multiedge are distinct. The locally irregular coloring is an edge coloring of a multigraph \(G\) such that every color induces a locally irregular submultigraph of \(G\).
Igor Grzelec, Mariusz Woźniak
doaj   +1 more source

Time-stage driven pathfinding framework for optimized medical treatments

open access: yesCogent Engineering, 2023
Coming up with the correct patient-specific treatment procedure is a non-trivial task. One of the main challenges is that the problem is combinatorial, and each treatment can be followed by numerous treatments.
Karen Gishyan   +2 more
doaj   +1 more source

Decomposing 10-Regular Graphs into Paths of Length 5

open access: yesDiscussiones Mathematicae Graph Theory, 2022
Let G be a 10-regular graph which does not contain any 4-cycles. In this paper, we prove that G can be decomposed into paths of length 5, such that every vertex is a terminal of exactly two paths.
Xie Mengmeng, Zhou Chuixiang
doaj   +1 more source

An Improved Simulated Annealing Algorithm With Excessive Length Penalty for Fixed-Outline Floorplanning

open access: yesIEEE Access, 2020
In addition to wirelength and area, modern floorplans need to consider various constraints such as fixed-outline. To handle the fixed-outline floorplanning optimization problem efficiently, we propose an improved simulated annealing (SA) algorithm, which
Zhipeng Huang   +3 more
doaj   +1 more source

Generalized Hausdorff Operators on K̇α,qβ,pℝ and HK̇α,qβ,p,Nℝ in the Dunkl Settings

open access: yesJournal of Function Spaces, 2021
In the present paper, we obtain some new results, and we generalize some known results for the Hausdorff operators. We have studied the generalized Hausdorff operators Hα,φ on the Dunkl-type homogeneous weighted Herz spaces K̇α,qβ,pℝ and Dunkl Herz-type ...
Faouaz Saadi, Othman Tyr, Radouan Daher
doaj   +1 more source

The extremal graphs with respect to their nullity

open access: yesJournal of Inequalities and Applications, 2016
The nullity of a graph G, denoted by η ( G ) $\eta(G)$ , is the multiplicity of the eigenvalue zero of its adjacency matrix. In this paper, we determine all graphs with η ( G ) = n ( G ) − 2 m ( G ) − c ( G ) $\eta(G)=n(G) - 2m(G) -c(G)$ , where c ( G ) =
Sa Rula, An Chang, Yirong Zheng
doaj   +1 more source

Bicyclic graphs with maximum sum of the two largest Laplacian eigenvalues

open access: yesJournal of Inequalities and Applications, 2016
Let G be a simple connected graph and S 2 ( G ) $S_{2}(G)$ be the sum of the two largest Laplacian eigenvalues of G. In this paper, we determine the bicyclic graph with maximum S 2 ( G ) $S_{2}(G)$ among all bicyclic graphs of order n, which confirms the
Yirong Zheng   +3 more
doaj   +1 more source

Independent resolving sets in graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
Let be a connected graph. Let be a subset of V with an order imposed on W. The k-vector is called the resolving vector of v with respect to W. The set W is called a resolving set if for any two distinct vertices In this paper we investigate the existence
B. Suganya, S. Arumugam
doaj   +1 more source

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