IMA Journal of Mathematical Control and Information Advance Access originally published online on April 3, 2009
IMA Journal of Mathematical Control and Information 2009 26(2):131-140; doi:10.1093/imamci/dnp004
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Approximate controllability for semi-linear retarded stochastic systems in Hilbert spaces

Department of Mathematics, Gandhigram Rural University, Gandhigram 624 302, Tamil Nadu, India
Email: pbalgri{at}rediffmail.com
Received on December 4, 2007; Accepted on February 27, 2009
In this paper, semi-linear retarded stochastic control systems together with conditions for approximate controllability of associated linear system is used to obtain sufficient conditions for approximate controllability results in Hilbert spaces. An example is also provided to illustrate the theory.
Keywords: approximate controllability; retarded stochastic semi-linear system; Hilbert space.