Abstract
Precise conditions are obtained for the packing measure of an arbitrary subordinator to be zero, positive and finite, or infinite. It develops that the packing measure problem for a subordinator X(t) is equivalent to the upper local growth problem for Y(t)=min (Y1(t), Y2(t)), where Y1 and Y2 are independent copies of X. A finite and positive packing measure is possible for subordinators "close to Cauchy"; for such a subordinator there is non-random concave upwards function that exactly describes the upper local growth of Y (although, as is well known, there is no such function for the subordinator X itself).
Original language | English (US) |
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Pages (from-to) | 493-510 |
Number of pages | 18 |
Journal | Probability Theory and Related Fields |
Volume | 92 |
Issue number | 4 |
DOIs | |
State | Published - Dec 1992 |