Abstract
It is shown that if themth derivative of a function is positive, and it has a Legendre polynomial expansion with coefficients,A n, then (A m)/(2m+1)≧(A n)/(2n+1) forn>m. This result is applied to the theory of liquid phase transitions.
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Literature
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Landau, H.G. Note on an inequality for the coefficients in legendre polynomial expansions and its application to the theory of liquid phase transitions. Bulletin of Mathematical Biophysics 17, 41–44 (1955). https://doi.org/10.1007/BF02481836
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DOI: https://doi.org/10.1007/BF02481836