• Conference Object  

      Distributed formation of balanced and bistochastic weighted digraphs in multi-agent systems 

      Charalambous, T.; Hadjicostis, Christoforos N. (2013)
      We propose two distributed algorithms, one for solving the weight-balance problem and another for solving the bistochastic matrix formation problem, in a distributed system whose components (nodes) can exchange information ...
    • Article  

      Distributed weight balancing over digraphs 

      Rikos, A. I.; Charalambous, T.; Hadjicostis, Christoforos N. (2014)
      A weighted digraph is balanced if, for each node, the sum of the weights of the edges outgoing from that node is equal to the sum of the weights of the edges incoming to that node. Weight-balanced digraphs play a key role ...
    • Article  

      Matrix decomposition algorithms for modified spline collocation for Helmholtz problems 

      Bialecki, B.; Fairweather, G.; Karageorghis, Andreas (2003)
      We consider the solution of various boundary value problems for the Helmholtz equation in the unit square using a nodal cubic spline collocation method and modifications of it which produce optimal (fourth-) order ...