Abstract
The paper deals with properties of σ-angle bounded linear and nonlinear operators. In particular it is proved that ifA is a σ-angle bounded linear maximal monotone operator in a real Hilbert space then −A is the infinitesimal generator of an analytic semi-group.
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Baillon, JB., Haddad, G. Quelques propriétés des opérateurs angle-bornés etn-cycliquement monotones. Israel J. Math. 26, 137–150 (1977). https://doi.org/10.1007/BF03007664
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DOI: https://doi.org/10.1007/BF03007664