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A study on periodic discrete Schrödinger operators

초록/요약

The purpose of this thesis is to introduce the spectral theory of periodic discrete Schrödinger operators. First, the Fourier analysis on the discrete space Zd is developed, and then we discuss the Floquet-Bloch theory to analyze the spectrum of a periodic operator. Finally, the discrete Bethe-Sommerfeld conjecture is posed, and some recent results on this problem are presented.

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