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On sets of fractional dimensions (II)

Published online by Cambridge University Press:  24 October 2008

E. Best
Affiliation:
The Queen's UniversityBelfast

Extract

1. Any number x between 0 and 1 may be expressed uniquely in the form

where xr is a non-negative integer less than r (r = 2,3,…). We consider the set E of numbers x for which

We establish an inequality connecting the dimensional number of the set E with certain constants of the series

in particular we show that, when ξτ = rθ, the dimensional number of E is θ. We are concerned with the measure of Hausdorff.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1941

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References

Hausdorff, F., “Dimension und äusseres Mass”, Math. Annalen, 79 (1919), 157–79.CrossRefGoogle Scholar

Besicovitch, A. S., “Linear sets of points of fractional dimensions”, Math. Annalen, 101 (1929), 161–93.CrossRefGoogle Scholar

§ We write sm*E in place of t sm*E where there can be no ambiguity.

Best, , “A closed dimensionless linear set”, Proc. Edinburgh Math. Soc. (2), 6 (1939), 105–8.CrossRefGoogle Scholar

Gillis, J., “Note on a theorem of Myrberg”, Proc. Cambridge Phil. Soc. 33 (1937), 419–24CrossRefGoogle Scholar

For if 0 <fmE<∞ and then gmE = ∞.

I am indebted to the referee here for a considerable simplification of the argument.