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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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A generalization of Sturm’s separation theorem

Author: W. Allegretto
Journal: Proc. Amer. Math. Soc. 25 (1970), 151-154
MSC: Primary 35.11
MathSciNet review: 0255959
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Abstract: A Sturmian separation theorem is established for elliptic-parabolic equations with minimal assumptions on the coefficients and none on the regularity of the domain. A comparison theorem for linear equations and a separation theorem for quasi-linear equations are then obtained as applications.

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Keywords: Sturmian separation theorem, comparison theorem, nonselfadjoint equations, elliptic-parabolic equations, quasi-linear equations
Article copyright: © Copyright 1970 American Mathematical Society