Results 21 to 30 of about 22,178 (248)
A Note on Brill–Noether Theory and Rank-Determining Sets for Metric Graphs [PDF]
International Mathematics Research Notices, 2012 We produce open subsets of the moduli space of metric graphs without separating edges where the dimensions of Brill‐Noether loci are larger than the corresponding Brill‐Noether numbers. These graphs also have minimal rank-determining sets that are larger than expected, giving counterexamples to a conjecture of Luo.
Chang Mou Lim +2 more
openaire +1 more source
IET Cyber-Physical Systems, 2021 Moving target defence (MTD) has been gaining traction to thwart false data injection attacks against state estimation (SE) in the power grid. MTD actively perturbs the reactance of transmission lines equipped with distributed flexible AC transmission ...
Bo Liu, Hongyu Wu
doaj +1 more source
K-theory and homotopies of 2-cocycles on higher-rank graphs [PDF]
Pacific Journal of Mathematics, 2015 This paper continues our investigation into the question of when a homotopy $ = \{ _t\}_{t \in [0,1]}$ of 2-cocycles on a locally compact Hausdorff groupoid $\mathcal{G}$ gives rise to an isomorphism of the $K$-theory groups of the twisted groupoid $C^*$-algebras: $K_*(C^*(\mathcal{G}, _0)) \cong K_*(C^*(\mathcal{G}, _1)).$ In particular, we ...
openaire +3 more sources
A ranking for the nodes of directed graphs based on game theory (Poster Presentation) [PDF]
PAMM, 2007 AbstractWe introduce a value that allows us to emphasize the importance of each player in a cooperative game when the cooperation possibilities are limited according to the links of an oriented network. The proposed concept of accessibility tries to conjugate the marginal contributions of each node as a game player with the cooperation geometry imposed
Rafael Amer +2 more
openaire +1 more source
Water Resources Management, 2022 AbstractThe resilience assessment is crucial for many infrastructures, including water supply and distribution networks. In particular, the identification of the ‘critical’ components (nodes or pipes) whose failure may negatively affect network performances and system resilience is a key issue, with a direct relevance for decision-makers involved in ...
Pagano A., Giordano R., Portoghese I.
openaire +3 more sources
Frontiers in Neuroscience, 2021 Objective: Graph theory applications are commonly used in connectomics research to better understand connectivity architecture and characterize its role in cognition, behavior and disease conditions. One of the numerous open questions in the field is how
Sahin Hanalioglu +9 more
doaj +1 more source
A new approach for ranking decision-making units in data envelopment analysis by using communication game theory [PDF]
Iranian Journal of Numerical Analysis and OptimizationRanking decision making units (DMUs) is an important topic in data en-velopment analysis (DEA). When efficient DMUs or inefficient DMUs have the same efficiency score, the traditional DEA model usually fails to rank all DMUs.
M. Amiri, A. Ashrafi
doaj +1 more source
Shapley ratings in brain networks
Frontiers in Neuroinformatics, 2007 Recent applications of network theory to brain networks as well as the expanding empirical databases of brain architecture spawn an interest in novel techniques for analyzing connectivity patterns in the brain.
Rolf Kötter +7 more
doaj +1 more source
Three topological features of regulatory networks control life-essential and specialized subsystems
Scientific Reports, 2021 Gene regulatory networks (GRNs) play key roles in development, phenotype plasticity, and evolution. Although graph theory has been used to explore GRNs, associations amongst topological features, transcription factors (TFs), and systems essentiality are ...
Ivan Rodrigo Wolf +2 more
doaj +1 more source
Determination of the Shortest Hamiltonian Paths in an Arbitrary Graph of Distributed Databases
Российский технологический журнал, 2019 A method has been developed for finding the shortest Hamiltonian path in an arbitrary graph based on the rank approach, which provides high efficiency and a significant reduction in the error in solving the problem of organizing the process of managing ...
E. G. Andrianova +2 more
doaj +1 more source