Results 31 to 40 of about 8,249,666 (288)

Making a Dominating Set of a Graph Connected

open access: yesDiscussiones Mathematicae Graph Theory, 2018
Let G = (V,E) be a graph and S ⊆ V. We say that S is a dominating set of G, if each vertex in V \ S has a neighbor in S. Moreover, we say that S is a connected (respectively, 2-edge connected or 2-connected) dominating set of G if G[S] is connected ...
Li Hengzhe, Wu Baoyindureng, Yang Weihua
doaj   +1 more source

Minimum Neighborhood of Alternating Group Graphs

open access: yesIEEE Access, 2019
The minimum neighborhood and combinatorial property are two important indicators of fault tolerance of a multiprocessor system. Given a graph G, θG(q) is the minimum number of vertices adjacent to a set of q vertices of G (1 ≤ q ≤ |V(
Yanze Huang   +3 more
doaj   +1 more source

Quantum Algorithm for Approximating Maximum Independent Sets

open access: yes, 2021
We present a quantum algorithm for approximating maximum independent sets of a graph based on quantum non-Abelian adiabatic mixing in the sub-Hilbert space of degenerate ground states, which generates quantum annealing in a secondary Hamiltonian.
Wilczek, Frank, Wu, Biao, Yu, Hongye
core   +1 more source

Application of an Extremal Result of Erdős and Gallai to the (n,k,t) Problem

open access: yesTheory and Applications of Graphs, 2017
An extremal result about vertex covers, attributed by Hajnal to Erdős and Gallai, is applied to prove the following: If n, k, and t are integers satisfying n ≥ k ≥ t ≥ 3 and k ≤ 2t - 2, and G is a graph with the minimum number of edges among graphs on n ...
Matt Noble   +3 more
doaj   +1 more source

Parameterized Approximation Schemes for Independent Set of Rectangles and Geometric Knapsack [PDF]

open access: yes, 2019
The area of parameterized approximation seeks to combine approximation and parameterized algorithms to obtain, e.g., (1+epsilon)-approximations in f(k,epsilon)n^O(1) time where k is some parameter of the input.
Grandoni, Fabrizio   +2 more
core   +2 more sources

Counting Maximal Distance-Independent Sets in Grid Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2013
Previous work on counting maximal independent sets for paths and certain 2-dimensional grids is extended in two directions: 3-dimensional grid graphs are included and, for some/any ℓ ∈ N, maximal distance-ℓ independent (or simply: maximal ℓ-independent ...
Euler Reinhardt   +2 more
doaj   +1 more source

On the independent set interdiction problem

open access: yesElectronic Journal of Graph Theory and Applications, 2015
The purpose of the independent set interdiction problem in the weighted graph $G$ is to determine a set of vertices $R^*$ such that the weight of the maximum independent set in $G-R^*$ is minimized.
Gholam Hassan Shirdel, Nasrin Kahkeshani
doaj   +1 more source

Inapproximability of the independent set polynomial in the complex plane

open access: yes, 2020
We study the complexity of approximating the independent set polynomial $Z_G(\lambda)$ of a graph $G$ with maximum degree $\Delta$ when the activity $\lambda$ is a complex number.
Bezakova, Ivona   +3 more
core   +1 more source

Coloring and Guarding Arrangements [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
Combinatorics
Prosenjit Bose   +6 more
doaj   +1 more source

Representational capacity of a set of independent neurons

open access: yes, 2001
The capacity with which a system of independent neuron-like units represents a given set of stimuli is studied by calculating the mutual information between the stimuli and the neural responses.
A. Treves   +21 more
core   +1 more source

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