Abstract
Burdzy and Khoshnevisan(9) have shown that the Hausdorff dimension of the level sets of an iterated Brownian motion (IBM) is equal to 3/4. In this paper, the exact Hausdorff measure function and the packing measure of the levels set of IBM are given. Our approach relies on some accurate analysis on the local asymptotic of local times.
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REFERENCES
Arcones, M. A. (1995). On the law of the iterated logarithm for Gaussian processes. J. Theoret. Prob. 8, 877–903.
Barlow, M. T., Perkins, E. A., and Taylor, S. J. (1986). Two uniform intrinsic constructions for the local time of a class of Lévy processes. Illinois J. Math. 30, 19–65.
Benachour, S., Roynette, B., and Vallois, P. (1996). Une approche probabiliste de l'équation u t =-1/8(∂2 u/∂x 4). Preprint.
Bertoin, J. (1996). Iterated Brownian motion and stable (1/4) subordinator. Statist. Prob. Letters 27, 111–114.
Bertoin, J., and Shi, Z. (1996). Hirsch's integral test for the iterated Brownian motion. In J. Azéma, M. Émery, and M. Yor (eds.), Sém. Probab. XXX, Lect. Notes in Math., Springer, Berlin, 1626, 361–368.
Biane, Ph., and Yor, M. (1988). Sur la loi des temps locaux Browniens pris en un temps exponentiel. Sém. Probab. XXII, Lect. Notes in Math., Springer, Berlin, 1321, 454–466.
Burdzy, K. (1993). Some path properties of iterated Brownian motion. In E. Çinlar, K. L. Chung, and M. Sharpe (eds.), Seminar on Stochastic Processes, Birkhäuser, Boston, pp. 67–87.
Burdzy, K. (1994). Variation of iterated Brownian motion. In D. A. Dawson (ed.), Measure-Values Processes, Stochastic Partial Equations and Interacting Systems, CRM Proc. Lect. Notes 5, 35–53.
Burdzy, K., and Khoshnevisan, D. (1995). The levels sets of iterated Brownian motion. In J. Azéma, M. Émery, P. A. Meyer, and M. Yor (eds.), Sém. Probab. XXIX, Lect. Notes in Math., Springer, Berlin, 1613, 231–236.
Burdzy, K., and Khoshnevisan, D. (1998). Brownian motion in a Brownian crack. Ann. Appl. Prob. 8, 708–748.
Chung, K. L. (1948). On the maximum partial sums of sequences of independent random variables. Trans. Amer. Math. Soc. 64, 205–233.
Csáki, E., Csörgő, M., Földes, A., and Révész, P. (1995). Global Strassen type theorems for iterated Brownian motion. Stoch. Proc. Appl. 59, 321–341.
Csáki, E., Csörgő, M., Földes, A., and Révész, P. (1996). The local time of iterated Brownian motion. J. Theoret. Prob. 9, 717–743.
Csáki, E., Csörgő, M., Földes, A., and Révész, P. (1997). On the occupation time of an iterated process having no local time. Stoch. Proc. Appl. 70, 199–217.
Csáki, E., Földes, A., and Révész, P. (1997). Strassen-type theorems for a class of iterated processes. Trans. Amer. Math. Soc. 349, 1153–1167.
Csörgő, M., and Révész, P. (1981). Strong Approximations in Probability and Statistics, Academic Press, New York.
Eisenbaum, N., and Shi, Z. (1999). Uniform oscillations of the local time of iterated Brownian motion. Bernoulli (to appear).
Fristedt, B. E., and Taylor, S. J. (1992). The packing measure of a general subordinator. Prob. Theor. Rel. Fields 92, 493–510.
Funaki, T. (1979). A probabilistic construction of the solution of some higher order parabolic differential equations. Proc. Japan Acad. 55, 176–179.
Hu, Y., Pierre-Loti-Viaud, D., and Shi, Z. (1995). Laws of the iterated logarithm for iterated Wiener processes. J. Theor. Prob. 8, 303–319.
Hu, Y., and Shi, Z. (1995). The Csörgő-Révész modulus of non-differentiability of iterated Brownian motion. Stoch. Proc. Appl. 58, 267–279.
Hochberg, K. J., and Orsingher, E. (1996). Composition of stochastic processes governed by higher-order parabolic and hyperbolic equations. J. Theor. Probab. 9, 511–532.
Khoshnevisan, D., and Lewis, T. M. (1996). Chung's law of the iterated logarithm for the iterated Brownian motion. Ann. Inst. Henri Poincaré 32, 349–359.
Khoshnevisan, D., and Lewis, T. M. (1996). The modulus of continuity for iterated Brownian motion. J. Theor. Prob. 9, 317–333.
Khoshnevisan, D., and Lewis, T. M. (1999). Stochastic calculus for Brownian motion on a Brownian fracture. Ann. Appl. Prob. (to appear).
Kochen, S. B., and Stone, C. J. (1964). A note on the Borel-Cantelli lemma. Illinois J. Math. 8, 248–251.
Perkins, E. (1980). The exact Hausdorff measure of the level sets of Brownian motion. Z. Wahrsch. verw Geb. 58, 373–388.
Perkins, E. (1981). On the iterated logarithm law for local time. Proc. Amer. Math. Soc. 81, 470–472.
Pruitt, W. E., and Taylor, S. J. (1996). Packing and covering indices for a general Lévy process. Ann. Prob. 24, 971–986.
Revuz, D., and Yor, M. (1994). Continuous Martingales and Brownian Motion, Second Edition, Springer, Berlin.
Shi, Z. (1995). Lower limits of iterated Wiener processes. Statist. Prob. Lett. 23, 259–270.
Shi, Z., and Yor, M. (1997). Integrability and lower limits of the local time of iterated Brownian motion. Studia Scientiarum Math. Hung. 33, 279–298.
Takashima, K. (1989). Sample path properties of ergodic self-similar processes. Osaka J. Math. 26, 159–189.
Taylor, S. J. (1986). The measure theory of random fractals. Math. Proc. Camb. Phi. Soc. 100, 383–425.
Taylor, S. J. (1987). The use of packing measure in the analysis of random sets. Proc. 15th Symp. Stoch. Proc. Appl., Springer, Berlin, Lect. Notes Math. 1203, 214–222.
Taylor, S. J., and Tricot, C. (1985). Packing measure and its evaluation for a Brownian path. Trans. Amer. Math. Soc. 288, 679–699.
Taylor, S. J., and Wendel, J. G. (1966). The exact Hausdorff measure of the zero set of a stable process. Z. Wahrsch. verw Geb. 6, 170–180.
Xiao, Y. (1997). Hölder conditions for the local times and the Hausdorff measure of the level sets of Gaussian random fields. Prob. Theor. Rel. Fields 109, 129–157.
Xiao, Y. (1998). Local times and related properties of multi-dimensional iterated Brownian motion. J. Theor. Prob. 11, 383–408.
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Hu, Y. Hausdorff and Packing Measures of the Level Sets of Iterated Brownian Motion. Journal of Theoretical Probability 12, 313–346 (1999). https://doi.org/10.1023/A:1021669809625
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DOI: https://doi.org/10.1023/A:1021669809625