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Variation diminishing transformations andSturm-Liouville systems

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Commentarii Mathematici Helvetici

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This work was carried out while the author was in residence in Zurich, and was supported by the United States Air Force through the Air Force Office of Scientific Research and Development Command under Contract No. AF 49 (638)-846.

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Hirschman, I.I. Variation diminishing transformations andSturm-Liouville systems. Commentarii Mathematici Helvetici 36, 214–233 (1962). https://doi.org/10.1007/BF02566900

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