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The approximate local monotony of measurable functions

Published online by Cambridge University Press:  24 October 2008

I. J. Good
Affiliation:
Jesus CollegeCambridge

Extract

1. The description “approximate”, as applied to properties of a measurable function at a point, has come to mean, roughly speaking, “with the neglect of sets of measure zero”. If a function has, at a point x0, a certain property, such as differentiability or continuity, then it has the same property in the approximate sense, but not conversely.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1940

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References

REFERENCES

(1)Saks, . Theory of the integral (Warsaw, 1937), p. 295.Google Scholar
(2)Khintchine, . “Recherches sur la structure des fonctions mesurables.Rec. Math. Soc. Moscou, 31 (1924), 265–85.Google Scholar
(3) Saks. Loc. cit. p. 277.Google Scholar

See also

Khintchine, . “Recherches sur la structure des fonctions mesurables.Rec. Math. Soc. Moscou, 31 (1924), 377433; Fundam. Math. 9 (1927), 212–79.Google Scholar
Denjoy, . “Mémoire sur la totalisation des nombres dérivés non-sommables.” Ann. Ecole Norm. 33 (1916), 127222 (209).Google Scholar
Banach, . “Sur une classe de fonctions continues.” Fundam. Math. 8 (1926), 166–73.CrossRefGoogle Scholar