@inbook{a811b8f864a34d0992d83a35945acde4,
title = "The S-functional calculus for unbounded operators",
abstract = "The S-functional calculus can also be defined for unbounded operators. We consider a two-sided quaternionic Banach space X and we introduce a notation for the set of unbounded operators that we consider in this chapter. These results are taken from the papers [67,97], where we reduce the case of unbounded operators, with suitable transformations, to the case of bounded operators. The direct approach has been studied in the more recent paper [124], while the S-resolvent equation is in [50].",
author = "Fabrizio Colombo and Jonathan Gantner and Kimsey, {David P.}",
note = "Publisher Copyright: {\textcopyright} Springer Nature Switzerland AG 2018.",
year = "2018",
month = jan,
day = "1",
doi = "10.1007/978-3-030-03074-2_5",
language = "English",
series = "Operator Theory: Advances and Applications",
publisher = "Springer International Publishing",
pages = "125--136",
booktitle = "Operator Theory",
}