A necessary and sufficient condition for the existence of a tightest local frame

This publication has 4 references indexed in Scilit:

• The solution set of the algebraic Riccati equation and the algebraic Riccati inequality
  Linear Algebra and its Applications, 1991
• A necessary and sufficient condition for solvability of the linear-quadratic control problem without stability
  Systems & Control Letters, 1988
• Algebraic Riccati equation and symplectic algebra
  International Journal of Control, 1986
• Least squares stationary optimal control and the algebraic Riccati equation
  IEEE Transactions on Automatic Control, 1971