@Article{Piwowarczyk2016, author = "Piwowarczyk, Kamila and Ptak, Marek", title = "2-hyperreflexivity and hyporeflexivity of power partial isometries", journal = "Opuscula Math.", year = "2016", volume = "36", number = "6", pages = "799--806", doi = "http://dx.doi.org/10.7494/OpMath.2016.36.6.799", url = "http://dx.doi.org/10.7494/OpMath.2016.36.6.799", abstract = "Power partial isometries are not always hyperreflexive neither reflexive. In the present paper it will be shown that power partial isometries are always hyporeflexive and \(2\)-hyperreflexive.", keywords = "power partial isometry, reflexive subspace, hyperreflexive subspace, hyperreflexive operator, hyporeflexive algebra", issn = "1232-9274" }