EXTENSION OF THE BREZIS-EKELAND-NAYROLES PRINCIPLE TO MONOTONE OPERATORS
Augusto Visintin · Iris (University of Trento) · 2008
Adv. Math. Sci. Appl., 18 (2008), 633-650 Abstract. This work deals with Cauchy problems of the form du dt + α(u) � g in V � , a.e. in )0 ,T ( ,u (0) = u 0 . (∗) Here V is a separable and reflexive Banach space, α : V→ P(V � ) is a maximal monotone operator, g and u 0 are prescribed. A lower semicontinuous convex functional