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Gradient estimates and applications for SDEs in Hilbert space with multiplicative noise and Dini continuous drift

Feng-yu Wang Orcid Logo

Journal of Differential Equations, Volume: 260, Issue: 3, Pages: 2792 - 2829

Swansea University Author: Feng-yu Wang Orcid Logo

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Abstract

Consider the stochastic evolution equation in a separable Hilbert space Hwith a nice multiplicative noise and a locally Dini continuous drift. We prove that for any initial data the equation has a unique (possibly explosive) mild solution. Under a reasonable condition ensuring the non-explosion of t...

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Published in: Journal of Differential Equations
ISSN: 0022-0396
Published: Elsevier BV 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa28388
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Abstract: Consider the stochastic evolution equation in a separable Hilbert space Hwith a nice multiplicative noise and a locally Dini continuous drift. We prove that for any initial data the equation has a unique (possibly explosive) mild solution. Under a reasonable condition ensuring the non-explosion of the solution, the strong Feller property of the associated Markov semigroup is proved. Gradient estimates and log-Harnack inequalities are derived for the associated semigroup under certain global conditions, which are new even in finite-dimensions.
College: Faculty of Science and Engineering
Issue: 3
Start Page: 2792
End Page: 2829