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Well-posedness of a system of SDEs driven by jump random measures

Author

Listed:
  • Ying Jiao

    (LSAF - Laboratoire de Sciences Actuarielle et Financière - UCBL - Université Claude Bernard Lyon 1 - Université de Lyon, ISFA - Institut de Science Financière et d'Assurances)

  • Nikolaos Kolliopoulos

Abstract

We establish well-posedness for a class of systems of SDEs with non-Lipschitz coefficients in the diffusion and jump terms and with two sources of interdependence: a monotone function of all the components in the drift of each SDE and the correlation between the driving Brownian motions and jump random measures. Pathwise uniqueness is derived by employing some standard techniques. Then, we use a comparison theorem along with our uniqueness result to construct non-negative, [Formula: see text]-integrable càdlàg solutions as monotone limits of solutions to approximating SDEs, allowing for time-inhomogeneous drift terms to be included. Our approach allows also for a comparison property to be established for the solutions to the systems we investigate. The applicability of certain systems in financial modeling is also discussed.

Suggested Citation

  • Ying Jiao & Nikolaos Kolliopoulos, 2023. "Well-posedness of a system of SDEs driven by jump random measures," Post-Print hal-04894084, HAL.
    • Handle: RePEc:hal:journl:hal-04894084
    DOI: 10.1142/S0219493723500284
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