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Logarithmic Capacity of Sets and Double Trigonometric Series

Published online by Cambridge University Press:  20 November 2018

V. L. Shapiro*
Affiliation:
Rutgers University and The Institute for Advanced Study
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It is the purpose of this paper to establish a closer connection between the logarithmic capacity of sets and double trigonometric series. In (9), closed sets of logarithmic capacity zero were established as sets of uniqueness for a particular class of double trigonometric series under circular (C, 1) summability. By slightly changing this class of series but still maintaining closed sets of logarithmic capacity zero as sets of uniqueness, it is shown in this paper that closed sets of positive logarithmic capacity form sets of multiplicity.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1954

References

1. Bochner, S., Summation of multiple Fourier series by spherical means, Trans. Amer. Math. Soc, 40 (1936), 175–207.Google Scholar
2. Brelot, M., Sur la structure des ensembles de capacité nulle, C. R. Acad. Sci. Paris, 192 (1931), 206–208.Google Scholar
3. Cheng, M., Uniqueness of multiple trigonometric series, Ann. of Math. (2), 52 (1950), 403–416.Google Scholar
4. de la Vallée Poussin, Ch. J., Le Potentiel logarithmique (Paris, 1949).Google Scholar
5. Frostman, O., Potentiel d'équilibre et capacité des ensembles (Lund, 1935).Google Scholar
6. Kellogg, O. D., Foundations of potential theory (New York, 1929).Google Scholar
7. Rado, T., Subharmonic functions, Ergebnisse der Mathematik, 5, no. 1 (Berlin, 1937).Google Scholar
8. Salem, R. and Zygmund, A., Capacity of sets and Fourier series, Trans. Amer. Math. Soc, 59 (1946), 23–41.Google Scholar
9. Shapiro, V. L., An extension of results in the uniqueness theory of double trigonometric series, Duke Math. J., 20 (1953), 359–366.Google Scholar
10. Shapiro, V. L., Summability and uniqueness of double trigonometric integrals, Trans. Amer. Math. Soc. (to be published).Google Scholar
11. Valiron, G., Lectures on the general theory of integral functions (Toulouse, 1923).Google Scholar