Individual Volterra–Lyapunov stability implies a non-square D-stability-like property

At least 2 years old · documented by

Let A∈Rm×nA\in\mathbb{R}^{m\times n} be a real nonsquare matrix. Let M\mathcal{M} be the index set consisting of kk-tuples of integers in the range 1,…,m1,\ldots,m. For j∈Mj\in\mathcal{M}, let [AEK]j[AEK]_j denote the corresponding matrix associated with the block diagonal non-square matrix K∈Cn×mK\in\mathbb{C}^{n\times m}, and let Re⁡{σi(M)}\operatorname{Re}\{\sigma_i(M)\} denote the real part of the ii-th eigenvalue of a matrix MM. Individual Volterra–Lyapunov stability conjecture. If AA is an individual Volterra–Lyapunov stable matrix, then there exists a block diagonal non-square matrix K∈Cn×mK\in\mathbb{C}^{n\times m} such that, for every non-negative diagonal matrix E∈Rn×nE\in\mathbb{R}^{n\times n} and every j∈Mj\in\mathcal{M},

Re⁡{σi([AEK]j)}>0.\operatorname{Re}\{\sigma_i([AEK]_j)\}>0.

The claim proposes a sufficient spectral property associated with individual Volterra–Lyapunov stability for nonsquare matrices; the supplied text does not establish it or provide evidence that it has been resolved.

References

Primary source

Steven W. Su, “Special Stable Matrices and Their Non-square Counterpart”, arXiv:2401.00367 (2023).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.