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» Dualizability and graph algebras
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GC
2008
Springer
13 years 7 months ago
Laplacian Spectrum of Weakly Quasi-threshold Graphs
In this paper we study the class of weakly quasi-threshold graphs that are obtained from a vertex by recursively applying the operations (i) adding a new isolated vertex, (ii) addi...
R. B. Bapat, A. K. Lal, Sukanta Pati
CONCUR
2006
Springer
13 years 11 months ago
Some Remarks on Definability of Process Graphs
We propose the notions of "density" and "connectivity" of infinite process graphs and investigate them in the context of the wellknown process algebras BPA and ...
Clemens Grabmayer, Jan Willem Klop, Bas Luttik
CDC
2010
IEEE
142views Control Systems» more  CDC 2010»
13 years 2 months ago
Consensus with constrained convergence rate: Agreement in communities
The study focuses on a class of discrete-time multi-agent systems modelling opinion dynamics with decaying confidence. Essentially, we propose an agreement protocol that impose a p...
Constantin-Irinel Morarescu, Antoine Girard
LION
2009
Springer
152views Optimization» more  LION 2009»
14 years 2 months ago
Comparison of Coarsening Schemes for Multilevel Graph Partitioning
Graph partitioning is a well-known optimization problem of great interest in theoretical and applied studies. Since the 1990s, many multilevel schemes have been introduced as a pra...
Cédric Chevalier, Ilya Safro
STACS
2010
Springer
13 years 11 months ago
The Complexity of the List Homomorphism Problem for Graphs
We completely characterise the computational complexity of the list homomorphism problem for graphs in combinatorial and algebraic terms: for every graph H the problem is either N...
László Egri, Andrei A. Krokhin, Beno...