Numerical algorithms and software tools for analysis and modelling of descriptor systems

Abstract. The paper presents a state-of-the art overview of algorithms and software for analysis and modelling of linear descriptor systems. The presentation focuses on algorithms for which reliable software implementations are already available. Most of mentioned software tools belong to a small Fortran subrou-tines library, called DESCRIPT, developed by the author. This library contains robust implementation of numerically reliable algorithms covering the basic computational problems in analysis and modelling of descriptor systems. DESCRIPT is the first systematized collection of software tools dedicated to descriptor systems. The analysis and modelling facilities for descriptor systems available in the interactive package CASAM are based exclusively on the subroutines from DESCRIPT