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Q3477353 - MaRDI portal

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    author
    Bernard Helffer
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    Johannes Sjöstrand
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    publication date
    1989
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    Mathematics Subject Classification ID
    35P05
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    35S05
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    35J10
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    zbMATH DE Number
    4146661
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    zbMATH Keywords
    Harper equation
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    strong magnetic field
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    two-dimensional Schrödinger operator
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    one-dimensional pseudo-differential
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    Cantor set
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    weak magnetic field
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    periodic potential
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    Peiers approximation
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    spectral gaps
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