Geodesic
$m$-Accretive extensions of a~sectorial operator
Sbornik. Mathematics, Tome 204 (2013) no. 8, pp. 1085-1121

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A description of all the maximal accretive extensions and their resolvents is given for a densely defined closed sectorial operator in terms of abstract boundary conditions. These results are applied to parametrize all the $m$-accretive extensions of a symmetric operator in a planar model of one-centre point interaction. Bibliography: 40 titles.
Keywords: sectorial operator, accretive operator, linear relation, Friedrichs extension, boundary triplet. 
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     title = {$m${-Accretive} extensions of a~sectorial operator},
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Yu. M. Arlinskii; A. B. Popov. $m$-Accretive extensions of a~sectorial operator. Sbornik. Mathematics, Tome 204 (2013) no. 8, pp. 1085-1121. http://geodesic.mathdoc.fr/item/SM_2013_204_8_a0/