... Applications,Shanghai Scientific Technology and Literature Press, Shanghai, China, 1991.[2] M. A. Noor, “On a class of variational inequalities, ” Journal of Mathematical Analysis and Appli-cations, ... Operators in Banach Space and Nonlinear Partial Differential Equa-tions, vol. 49 of Mathematical Surveys and Monographs, American Mathematical Society, Provi-dence, RI, USA, 1997. Jianhua Huang: ... nonzero solutions for variational inequalities isan important topic of variational inequality theory. Recently, several authors discussed the existence of nonzero solutions for variational inequalities...