List of Publications

• I. Lewkowicz and R. Sivan, "Maximal Stability Robustness for State Equations", IEEE Trans. Auto. Contr., Vol. AC-33, No. 3, pp. 297-300, March 1988.
  

• I. Lewkowicz, "Bounds for the Singular Values of a Matrix with Non - Negative Eigenvalues", Linear Algebra and its Applications, Vol. 112, pp. 29-37, Jan. 1989.
  

• I. Lewkowicz, "Remarks on Inequality in Johnson's Lower Bound for the Smallest Singular Value", Linear Algebra and its Applications, Vol. 120, pp. 39-46, Aug. 1989.
  

• I. Lewkowicz and R. Sivan, "Inverse Radial Matrices and Maximal Stability Robustness", in Control of Uncertain Systems: Proc. of an International Workshop, Bremen, West-Germany., June 1989, Birkhauser, 1990.

• N. Cohen and I. Lewkowicz, "Bounds for the Singular Values Based on the Eigenvectors, Linear Algebra and its Applications, Vol. 149, pp. 227-248, April 1991.
  

• I. Lewkowicz, "When Are the Complex and the Real Stability Radii Equal?", IEEE Trans. Auto. Contr., Vol. AC-37, No. 6, pp. 880-883, June 1992.
  

• I. Lewkowicz and R. Sivan, "Stability Robustness of Almost Linear State Equations", IEEE Trans. Auto. Contr., Vol. AC-38, No. 2, pp. 262-266, February 1993.
  

• N. Cohen and I. Lewkowicz, "A Necessary and Sufficient Criterion for the Stability of a Convex Set of Matrices", IEEE Trans. Auto. Contr., Vol. AC-38, No. 4, pp. 611-615, April 1993.
  

• N. Cohen and I. Lewkowicz, "Convex Invertible Cones and the Lyapunov Equation", Linear Algebra and its Applications, Vol. 250, pp. 105-131, January 1997.
  

• N. Cohen, I. Lewkowicz and L. Rodman, "Exponential Stability of Triangular Differential Inclusion Systems", Systems and Control Letters, Vol. 30, pp. 159-164, May 1997.
  

• N. Cohen and I. Lewkowicz, "Convex Invertible Cones of State Space Systems", Mathematics of Control Signals and Systems, Vol. 10, pp. 265-285, 1997.
  

• I. Lewkowicz, "Convex Invertible Cones of Matrices - a Unified Framework for the Equations of Sylvester, Lyapunov and Riccati", Linear Algebra and its Applications, Vol. 286, pp 107-133, 1999.
  

• I. Lewkowicz, "A Necessary Condition for Quantitative Exponential Stability of Linear State Space Systems", Systems and Control Letters, Vol. 38, pp. 1-4, September 1999.
  

• N. Cohen and I. Lewkowicz, "A Characterization of Convex Cones of Matrices with Constant Regular Inertia", Linear Algebra and its Applications, Vol. 318, pp. 23-33, 2000
  

• N. Cohen and I. Lewkowicz, "A Pair of Matrices Sharing Common Lyapunov Solutions - A Closer Look", Linear Algebra and its Applications, Vol. 370, pp. 83-104, 2003
  

• I. Lewkowicz, L. Rodman and E. J. Yarkoni, "Convex Invertible Sets and Matrix Sign Function", Linear Algebra and its Applications, Vol. 396, pp. 329-352, 2005
  

• N. Cohen and I. Lewkowicz, "Convex Invertible Cones and Positive Real Analytic Functions", Linear Algebra and its Applications, Vol. 425, pp. 797-813, 2007
  

• N. Cohen and I. Lewkowicz, "The Lyapunov Order for Real Matrices", Linear Algebra and its Applications, Vol. 430, pp. 1849-1866, 2009
  

• D. Alpay and I. Lewkowicz, "An Easy to Compute Factorization of Rational Generalized Positive Functions", Systems and Control Letters, Vol. 59, pp. 517-521, 2010
  

Return to home page