An algebraic framework systematically characterizes the asymptotic dispersion of all multi-block non-Hermitian degeneracies, including n-bolical points and exceptional points of various orders.
Constraints of internal symme- try on the non-hermitian skin effect and bidirec- tional skin effect under the action of the hermitian conjugate of time-reversal symmetry,
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Characterizing all non-Hermitian degeneracies using algebraic approaches: Defectiveness and asymptotic behavior
An algebraic framework systematically characterizes the asymptotic dispersion of all multi-block non-Hermitian degeneracies, including n-bolical points and exceptional points of various orders.