M. Frank

activity

19932022

most citedFrames in Hilbert C*-modules and C*-algebras

174 citations · 478 across the 30 of their papers we have counts for

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3 papers · 1 filter

math.FA2015★ 19 cited

Angle Preserving Mappings

Mohammad Sal Moslehian, Ali Zamani, Michael Frank

In this paper, we give some characterizations of orthogonality preserving mappings between inner product spaces. Furthermore, we study the linear mappings that preserve some angles…

math.FA2005★ 3 cited

Superstability of adjointable mappings on Hilbert $C^{*}$ -modules

Michael Frank, Pasc Gavruta, Mohammad Sal Moslehian

We define the notion of $φ$ -perturbation of a densely defined adjointable mapping and prove that any such mapping $f$ between Hilbert $A$ -modules over a fixed $C^{*}$ -alge…

math.FA1998

Symmetric approximation of frames and bases in Hilbert spaces

M. Frank, V. I. Paulsen, T. R. Tiballi

We consider existence and uniqueness of symmetric approximation of frames by normalized tight frames and of symmetric orthogonalization of bases by orthonormal bases in Hilbert spa…

Angle Preserving Mappings

Superstability of adjointable mappings on Hilbert C∗-modules

Symmetric approximation of frames and bases in Hilbert spaces

Superstability of adjointable mappings on Hilbert $C^{*}$ -modules