algebra / Matrix analysis

Ran-Teng Conjecture 20 on 4-Cycle Stochastic Matrices

Is the exact nonreal spectral region of the four-cycle family of row-stochastic nonnegative matrices determined by the Karpelevich constraint, as Ran and Teng conjectured in 2024?

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algebraFeb 24, 2026Significance 5/100Registry: unreviewed

Ran-Teng Conjecture 20 on 4-Cycle Stochastic Matrices

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Is the exact nonreal spectral region of the four-cycle family of row-stochastic nonnegative matrices determined by the Karpelevich constraint, as Ran and Teng conjectured in 2024?

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Is the exact nonreal spectral region of the four-cycle family of row-stochastic nonnegative matrices determined by the Karpelevich constraint, as Ran and Teng conjectured in 2024?

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Ran-Teng Conjecture 20 on 4-Cycle Stochastic Matrices — Mathematical Frontier Network