## Electronic Communications in Probability

### On the one-sided Tanaka equation with drift

#### Abstract

We study questions of existence and uniqueness of weak and strong solutions for a one-sided Tanaka equation with constant drift lambda. We observe a dichotomy in terms of the values of the drift parameter: for $\lambda\leq 0$, there exists a strong solution which is pathwise unique, thus also unique in distribution; whereas for $\lambda > 0$, the equation has a unique in distribution weak solution, but no strong solution (and not even a weak solution that spends zero time at the origin). We also show that strength and pathwise uniqueness are restored to the equation via suitable Brownian perturbations".

#### Article information

Source
Electron. Commun. Probab., Volume 16 (2011), paper no. 58, 664-677.

Dates
Accepted: 31 October 2011
First available in Project Euclid: 7 June 2016

https://projecteuclid.org/euclid.ecp/1465262014

Digital Object Identifier
doi:10.1214/ECP.v16-1665

Mathematical Reviews number (MathSciNet)
MR2853104

Zentralblatt MATH identifier
1243.60048

Rights

#### Citation

Karatzas, Ioannis; Shiryaev, Albert; Shkolnikov, Mykhaylo. On the one-sided Tanaka equation with drift. Electron. Commun. Probab. 16 (2011), paper no. 58, 664--677. doi:10.1214/ECP.v16-1665. https://projecteuclid.org/euclid.ecp/1465262014

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