Skip to Main Content

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.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

The minimax principle and uniqueness of the Friedrichs extension
HTML articles powered by AMS MathViewer

by Ebbe Thue Poulsen PDF
Proc. Amer. Math. Soc. 21 (1969), 508-509 Request permission
References
  • Tosio Kato, Perturbation theory for linear operators, Die Grundlehren der mathematischen Wissenschaften, Band 132, Springer-Verlag New York, Inc., New York, 1966. MR 0203473
    • F. Riesz and Béla Sz.-Nagy, Leçons d’analyse fonctionnelle, Académiai Kiadó, Budapest, 1952.
  • Jerome Berkowitz, On the discreteness of spectra of singular Sturm-Liouville problems, Comm. Pure Appl. Math. 12 (1959), 523–542. MR 107041, DOI 10.1002/cpa.3160120309
Similar Articles
  • Retrieve articles in Proceedings of the American Mathematical Society with MSC: 47.30
  • Retrieve articles in all journals with MSC: 47.30
Additional Information
  • © Copyright 1969 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 21 (1969), 508-509
  • MSC: Primary 47.30
  • DOI: https://doi.org/10.1090/S0002-9939-1969-0240651-3
  • MathSciNet review: 0240651