Editing Unitary operator (section)

==References==
* {{cite book|last=Conway|first=J. B.|author-link=John B. Conway|title=A Course in Functional Analysis|year=1990|series=Graduate Texts in Mathematics|volume=96|publisher=[[Springer Verlag]]|isbn=0-387-97245-5}}

* {{cite book | last1 = Doran | first1 = Robert S. |first2=Victor A.|author1link = Robert S. Doran|last2= Belfi  | title = Characterizations of C*-Algebras: The Gelfand-Naimark Theorems | publisher = Marcel Dekker | location = New York | year = 1986 | isbn = 0-8247-7569-4 }}

* {{cite book|author-link=Paul Halmos|last = Halmos|first = Paul|title = A Hilbert space problem book|publisher = Springer Verlag|series=Graduate Texts in Mathematics|volume=19|year = 1982|edition=2nd|isbn=978-0387906850}}

* {{cite book |author-link=Serge Lang|last = Lang|first = Serge|title = Differential manifolds|publisher = Addison-Wesley Publishing Co., Inc.|location = Reading, Mass.&ndash;London&ndash;Don Mills, Ont.|year = 1972|isbn=978-0387961132}}

*{{citation | last=Roman | first=Stephen
 | title=Advanced Linear Algebra | edition=Third | series=[[Graduate Texts in Mathematics]] | publisher  = Springer | date=2008| pages= | isbn=978-0-387-72828-5 |author-link=Steven Roman}}

{{Functional analysis}}
{{Hilbert space}}

[[Category:Operator theory]]
[[Category:Unitary operators| ]]
[[Category:Linear operators]]