Abstract
The existence of multiple critical points for a locally Lipschitz continuous functional Φ on a closed convex subset C of a Banach space X is investigated. The problem of finding extra conditions under which critical points for Φ on C turn out to be critical on X is also addressed. Two applications concerning elliptic variational-hemivariational inequalities are then worked out.
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Published by Heldermann Verlag, 2015. Rights now held by Banach Press LLC.
