most citedOn the spectrum of critical almost Mathieu operators in the rational case

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math.SP2020★ 1 cited

On the spectrum of critical almost Mathieu operators in the rational case

Svetlana Jitomirskaya, Lyuben Konstantinov, Igor Krasovsky

We derive a new Chambers-type formula and prove sharper upper bounds on the measure of the spectrum of critical almost Mathieu operators with rational frequencies.