Trace formulas for the schroedinger oper
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Peter D. Lax
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Article
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1994
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John Wiley and Sons
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English
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In this note we give an exceedingly simple, although not quite rigorous, derivation of the well-known trace formula expressing a periodic potential in a onedimensional Schroedinger operator in terms of its periodic, antiperiodic, and Dirichlet respectively Neumann spectrum. The items listed in the b