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Itô's Formula for Itô processes defined with respect to a cylindrical-martingale valued measure
Santiago Cambronero, David Campos, C. A. Fonseca-Mora, Darío Men · 2024-07-23 · via math.PR updates on arXiv.org

Using the theory of stochastic integration developed recently by the authors, in this paper we prove an Itô formula for Hilbert space-valued Itô processes defined with respect to a cylindrical-martingale valued measure. As part of our study, we develop some tools from stochastic analysis as are the predictable and optional quadratic variation of the stochastic integral, the continuous and purely discontinuous parts of the integral process, and a Riemann representation formula. Finally, as an application of Itô's formula we prove a Burkholder inequality for the stochastic integral defined with respect to a cylindrical-martingale valued measure.

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