Stochastic Differential Equations Involving the Local Time of the Unknown Process Driven by Stable

Stochastic Differential Equations Involving the Local Time of the Unknown Process Driven by Stable

Stochastic Differential Equations Involving the Local Time of the Unknown Process Driven by Stable

Tuesday, April 2, 2024
  • Lecturer: Johanna Weinberger (Technion)
  • Location: Meyer building (electrical engeneering), room 861
Abstract:

We consider singular SDEs driven by symmetric stable processes and with measure valued drift in a Kato class. Since the drift may be a measure which is not absolutely continuous one needs to find a rigorous definition of solutions. This can, for instance, be achieved by employing an approximation scheme [Kim & Song, '14]. We show that we can equivalently reformulate the drift term in terms of the local time of the unknown process. To this end, we derive a  Tanaka-type formula for symmetric stable processes that are perturbed by an adapted, right-continuous processes of finite variation. Finally, we discuss weak and strong existence and uniqueness of solutions.

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