A Hierarchical Semi-separable Moore-Penrose Equation Solver

  • Patrick Dewilde
  • Shivkumar Chandrasekaran
Part of the Operator Theory: Advances and Applications book series (OT, volume 167)


The main result of the present paper is a method to transform a matrix or operator which has a hierarchical semi-separable (HSS) representation into a URV (Moore-Penrose) representation in which the operators U and V represent collections of efficient orthogonal transformations and the block upper matrix R still has the HSS form. The paper starts with an introduction to HSS-forms and a survey of a recently derived multi resolution representation for such systems. It then embarks on the derivation of the main ingredients needed for a Moore-Penrose reduction of the system while keeping the HSS structure. The final result is presented as a sequence of efficient algorithmic steps, the efficiency resulting from the HSS structure that is preserved throughout.


Hierarchically semi-separable systems hierarchically quasi-separable systems Moore-Penrose inverse structured matrices 


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Copyright information

© Birkhäuser Verlag Basel/Switzerland 2006

Authors and Affiliations

  • Patrick Dewilde
    • 1
  • Shivkumar Chandrasekaran
    • 2
  1. 1.Department of Electrical EngineeringDelft University of TechnologyDelftThe Netherlands
  2. 2.Department of Electrical and Computer EngineeringUniversity of CaliforniaSanta BarbaraUSA

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