Editing Unbounded operator (section)

== References ==
=== Citations ===
{{reflist|22em}}
=== Bibliography ===
{{Refbegin}}
* {{ citation | last1=Berezansky| first1=Y.M. | last2=Sheftel| first2=Z.G. | last3=Us| first3=G.F.| title=Functional analysis | volume=II | year=1996| publisher=Birkhäuser }} (see Chapter 12 "General theory of unbounded operators in Hilbert spaces").
* {{ citation | last1=Brezis | first1=Haïm | title=Analyse fonctionnelle &mdash; Théorie et applications  | year=1983| publisher=Mason |place=Paris |language=fr}}
* {{springer|title=Unbounded operator|id=p/u095090}} <!--Hazewinkel, Michiel, ed. (2001) -->
* {{ citation | last=Hall | first=B.C. | title=Quantum Theory for Mathematicians | year=2013 | series=Graduate Texts in Mathematics
|volume=267 |chapter=Chapter 9. Unbounded Self-adjoint Operators  |publisher=Springer|isbn=978-1461471158}}
* {{ citation | last=Kato | first=Tosio | title=Perturbation theory for linear operators | year=1995 | series=Classics in Mathematics |chapter=Chapter 5. Operators in Hilbert Space  |publisher=Springer-Verlag |isbn=3-540-58661-X}}
* {{Cite book|title=Introductory Functional Analysis With Applications|last=Kreyszig|first=Erwin|publisher=John Wiley & Sons. Inc. | year=1978 | isbn=0-471-50731-8 | location=USA }}
* {{ citation | last=Pedersen | first=Gert K. | title=Analysis now | year=1989 | publisher=Springer }} (see Chapter 5 "Unbounded operators").
* {{ citation | last1=Reed | first1=Michael | author1-link=Michael C. Reed | last2=Simon | first2=Barry | author2-link=Barry Simon | title=Methods of Modern Mathematical Physics | edition=revised and enlarged | volume=1: Functional Analysis | year=1980 | publisher=Academic Press }} (see Chapter 8 "Unbounded operators").
* {{cite book|last=Stone|first=Marshall Harvey|title=Linear Transformations in Hilbert Space and Their Applications to Analysis. Reprint of the 1932 Ed|url=https://books.google.com/books?id=9n2CtOe9FLIC| year=1932| publisher=American Mathematical Society | isbn=978-0-8218-7452-3}}
* {{cite book| last = Teschl| given = Gerald|author-link=Gerald Teschl| title=Mathematical Methods in Quantum Mechanics; With Applications to Schrödinger Operators| publisher=[[American Mathematical Society]]| place = [[Providence, Rhode Island|Providence]]| year=2009 |url=https://www.mat.univie.ac.at/~gerald/ftp/book-schroe/ |isbn=978-0-8218-4660-5 }}
* {{citation|last=von Neumann |first =J. |year=1930|title=Allgemeine Eigenwerttheorie Hermitescher Functionaloperatoren (General Eigenvalue Theory of Hermitian Functional Operators) |journal=Mathematische Annalen |volume=102 |issue=1 |doi=10.1007/BF01782338|s2cid =121249803 }}
* {{citation|last=von Neumann |first=J. |year=1932 |title=Über Adjungierte Funktionaloperatore (On Adjoint Functional Operators) |journal=Annals of Mathematics |series=Second Series |volume=33 |doi=10.2307/1968331 |issue=2 |jstor=1968331}}
* {{ citation | last1=Yoshida| first1=Kôsaku | title=Functional Analysis | year=1980| publisher=Springer |edition=sixth}}
{{refend}}
{{PlanetMath attribution|id=4526|title=Closed operator}}

{{Spectral theory}}
{{Hilbert space}}
{{Functional analysis}}
{{Boundedness and bornology}}

{{DEFAULTSORT:Unbounded Operator}}
[[Category:Linear operators]]
[[Category:Operator theory]]

[[de:Linearer Operator#Unbeschränkte lineare Operatoren]]