Gauges for the cookie-cutter sets |
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Authors: | Yu Xia Dai Sheng You Wen |
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Institution: | Department of Mathematics, Hubei University, Wuhan 430062, P. R. China |
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Abstract: | Let E be a cookie-cutter set with dim
H
E = s. It is known that the Hausdorff s-measure and the packing s-measure of the set E are positive and finite. In this paper, we prove that for a gauge function g the set E has positive and finite Hausdorff g-measure if and only if 0 < lim inf
t→0
$
\tfrac{{g(t)}}
{{t^s }}
$
\tfrac{{g(t)}}
{{t^s }}
< ∞. Also, we prove that for a doubling gauge function g the set E has positive and finite packing g-measure if and only if 0 < lim sup
t→0
$
\tfrac{{g(t)}}
{{t^s }}
$
\tfrac{{g(t)}}
{{t^s }}
< ∞. |
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Keywords: | cookie-cutter set gauge function Hausdorff gauge packing gauge |
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