Pseudomonotonicity and nonlinear hyperbolic equationsPseudomonotonicity and nonlinear hyperbolic equations Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-10-291997enIn this paper we consider a nonlinear hyperbolic boundary value problem. We show that this problem admits weak solutions by using a lifting result for pseudomonotone operators and a surjectivity result concerning coercive and monotone operators. Δημοσίευση σε επιστημονικό περιοδικό http://creativecommons.org/licenses/by/4.0/Comment.Math.Univ.Carolin338463–469 Kandylakis Dimitrios Κανδυλακης Δημητριος pseudomonotone operator demicontinuous operator maximal monotone operator weak solution