Summary
Steinhaus (2) gave eleven theorems on distance sets of sets with positive measure. The author of this paper has shown here that all these theorems hold good if ratio sets are considered for sets with positive measure instead of their distance sets.
Riassunto
Steinhaus (2) dà vari teoremi sugli insiemi delle distanze relative agli insiemi con misura positiva.
In questa Nota l'autore dimostra che tutti i sudetti teoremi valgono ancora se per gli insiemi con misura positiva si considerano, invece degli insiemi delle distanze, gli insemi dei rapporti.
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References
Utz W. R. (1951), Amer. Math. Monthly, 58, 407.
H. Steinhaus (1920),Fund. Mathematicae, 1, 93.
Sen R. N. (1960),A Course of Geometry, Calcutta University Publication, Page 51.
C. Carathéodory (1948),Vorlesungen Über Reelle Funktionen, Chelsea, pp. 343, 344.
Hobson E. W. (1957),Theory of Functions of a Real Variable, p. 176 vol. 1, Dover.
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Bose Majumder, N.C. On some properties of sets with positive measures. Ann. Univ. Ferrara 10, 1–12 (1961). https://doi.org/10.1007/BF02824728
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DOI: https://doi.org/10.1007/BF02824728