TY - JOUR T1 - Existence of Three Solutions for Hemi-variational Inequalities Driven With Impulsive Effects TT - JF - lu-maco JO - lu-maco VL - 1 IS - 1 UR - http://maco.lu.ac.ir/article-1-41-en.html Y1 - 2020 SP - 25 EP - 39 KW - Nonsmooth critical point KW - Variational methods KW - Locally Lipschitz KW - Impulsive. N2 - In this paper we prove the existence of at least three solutions to the following second-order impulsive system: where `A: [0, T] rightarrow mathbb{R}^{N times N}` is a continuous map from the interval `[0, T]` to the set of `N`-order symmetric matrixes. The approach is fully based on a recent three critical points theorem of Teng [K. Teng, Two nontrivial solutions for hemivariational inequalities driven by nonlocal elliptic operators, Nonlinear Anal. (RWA) 14 (2013) 867-874]. M3 10.29252/maco.1.1.4 ER -