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Fully nonlinear stochastic and rough PDE...
Buckdahn, Rainer...
Fully nonlinear stochastic and rough PDEs: Classical and viscosity solutions by Buckdahn, Rainer ( Author )
Australian National University
07-09-2023
We study fully nonlinear second-order (forward) stochastic partial differential equations (SPDEs). They can also be viewed as forward path-dependent PDEs (PPDEs) and will be treated as rough PDEs (RPDEs) under a unified framework. We develop first a local theory of classical solutions and define then viscosity solutions through smooth test functions. Our notion of viscosity solutions is equivalent to the alternative one using semi-jets. Next, we prove basic properties such as consistency, stability, and a partial comparison principle in the general setting. When the diffusion coefficient is semi-linear (but the drift can be fully nonlinear), we establish a complete theory, including global existence and comparison principle. Our methodology relies heavily on the method of characteristics.
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Article
pdf
29.34 KB
English
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MYR 0.01
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http://arxiv.org/abs/1501.06978
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