Bethe-sommerfeld Conjecture

نویسنده

  • LEONID PARNOVSKI
چکیده

We consider Schrödinger operator −∆+V in R (d ≥ 2) with smooth periodic potential V and prove that there are only finitely many gaps in its spectrum. Dedicated to the memory of B.M.Levitan

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تاریخ انتشار 2007