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On two-dimensional finite-gap potential Schrodinger and Dirac operators with singular spectral curves

机译:具有奇异谱线的二维有限间隙势Schrodinger和Dirac算子

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摘要

We describe a wide class of two-dimensional potential Schrodinger and Dirac operators which are finite-gap at the zero energy level and whose spectral curves at this level are singular, in particular may have n-multiple points with n ≥ 3.
机译:我们描述了一类广泛的二维势Schrodinger和Dirac算子,它们在零能级处是有限间隙的,并且在该能级下的谱曲线是奇异的,特别是可能具有n≥3的n个多重点。

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