Abstract
We re-examine the celebrated Doob–McKean identity that identifies a conditioned one-dimensional Brownian motion as the radial part of a 3-dimensional Brownian motion or, equivalently, a Bessel-3 process, albeit now in the analogous setting of isotropic α-stable processes. We find a natural analogue that matches the Brownian setting, with the role of the Brownian motion replaced by that of the isotropic α-stable process, providing one interprets the components of the original identity in the right way.
Original language | English |
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Title of host publication | A Lifetime of Excursions Through Random Walks and Lévy Processes |
Editors | L. Chaumont, A. E. Kyprianou |
Place of Publication | Cham, Switzerland |
Publisher | Birkhäuser |
Pages | 269-282 |
Number of pages | 14 |
ISBN (Electronic) | 9783030833091 |
ISBN (Print) | 9783030833084 |
DOIs | |
Publication status | E-pub ahead of print - 30 Jul 2021 |
Publication series
Name | Progress in Probability |
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Volume | 78 |
ISSN (Print) | 1050-6977 |
ISSN (Electronic) | 2297-0428 |
Bibliographical note
Funding Information:Research supported by the European Research Council (Grant No. 669306).
Publisher Copyright:
© 2021, Springer Nature Switzerland AG.
Keywords
- Cauchy Processes
- Doob h-transform
- Radial process
ASJC Scopus subject areas
- Statistics and Probability
- Applied Mathematics
- Mathematical Physics
- Mathematics (miscellaneous)