2 problems

All-pass parametrization conjecture for minimal right-invertible spectral factors
All-pass parametrization conjecture. The set of all minimal right-invertible spectral factors of $\Phi(z)$ is
openall-pass-functions discrete-time-systems spectral-factorization
0 responses
07
Conjecture on Lyapunov representations of observable all-pass functions
Lyapunov representation conjecture. There exists a symmetric matrix $P=P^{\top}$ satisfying
openall-pass-functions discrete-time-systems lyapunov-equations
0 responses
04