Randomised twisted Toeplitz spectral-measure conjecture
Let be the symbol on
where are continuous complex-valued functions on . Let be the randomised twisted Toeplitz matrix defined in the source, and let be the weak limit of the eigenvalue-counting measures of the frozen Toeplitz matrices associated with . Define
Randomised twisted Toeplitz spectral-measure conjecture. The measures converge weakly to
This conjecture predicts the same averaged frozen-symbol limit for random sampling points in the symbol as for structured banded perturbations. The supplied source does not state whether the conjecture has been resolved.
References
Primary source
Dario Giandinoto and Boris Shapiro, “Structured perturbations of tridiagonal twisted Toeplitz matrices”, arXiv:2604.20617 (2026).
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