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arxiv: 1805.05851 · v2 · pith:QVMGIOLUnew · submitted 2018-05-15 · 🧮 math.PR

Existence, Uniqueness and Malliavin Differentiability of L\'evy-driven BSDEs with locally Lipschitz Driver

classification 🧮 math.PR
keywords malliavinbsdesdifferentiabilityexistencelipschitzlocallyuniquenessboundedness
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We investigate conditions for solvability and Malliavin differentiability of backward stochastic differential equations driven by a L\'evy process. In particular, we are interested in generators which satisfy a locally Lipschitz condition in the $Z$ and $U$ variable. This includes settings of linear, quadratic and exponential growths in those variables. Extending an idea of Cheridito and Nam to the jump setting and applying comparison theorems for L\'evy-driven BSDEs, we show existence, uniqueness, boundedness and Malliavin differentiability of a solution. The pivotal assumption to obtain these results is a boundedness condition on the terminal value $\xi$ and its Malliavin derivative $D\xi$. Furthermore, we extend existence and uniqueness theorems to cases where the generator is not even locally Lipschitz in $U.$ BSDEs of the latter type find use in exponential utility maximization.

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