Acta mathematica scientia,Series B ›› 2025, Vol. 45 ›› Issue (6): 2549-2578.doi: 10.1007/s10473-025-0610-z

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MARTINGALE SOLUTIONS OF FRACTIONAL STOCHASTIC REACTION-DIFFUSION EQUATIONS DRIVEN BY SUPERLINEAR NOISE

Bixiang WANG   

  1. Department of Mathematics, New Mexico Institute of Mining and Technology Socorro, NM 87801, USA
  • Received:2025-03-02 Revised:2025-05-01 Online:2025-11-25 Published:2025-11-14
  • About author:Bixiang WANG, E-mail: bwang@nmt.edu

Abstract: In this paper, we prove the existence of martingale solutions of a class of stochas-tic equations with a monotone drift of polynomial growth of arbitrary order and a continuous di_usion term with superlinear growth. Both the nonlinear drift and di_usion terms are not required to be locally Lipschitz continuous. We then apply the abstract result to establish the existence of martingale solutions of the fractional stochastic reaction-di_usion equation with polynomial drift driven by a superlinear noise. The pseudo-monotonicity techniques and the Skorokhod-Jakubowski representation theorem in a topological space are used to pass to the limit of a sequence of approximate solutions de_ned by the Galerkin method.

Key words: Martingale solution, pseudo-monotonicity, superlinear noise, Skorokhod-Jakubowski theorem, fractional equation, stochastic reaction-di_usion equation

CLC Number: 

  • 60F10
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