Abstract
LetA andB be monotone (multivalued) operators in a Hilbert spaceH. The paper deals with the relations between the rangeR(A+B) ofA+B and the algebraic sum of the ranges ofA andB, R(A)+R(B).
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Brezis, H., Haraux, A. Image d’une somme d’operateurs monotones et applications. Israel J. Math. 23, 165–186 (1976). https://doi.org/10.1007/BF02756796
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DOI: https://doi.org/10.1007/BF02756796