Friedrich Philipp

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20102014

most citedPhase Retrieval from 4N-4 Measurements

3 citations · 6 across the 6 of their papers we have counts for

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math.SP2014

Spectral Points of Type $π_{+}$ and Type $π_{-}$ of Closed Operators in Indefinite Inner Product Spaces

Friedrich Philipp, Carsten Trunk

We introduce the notion of spectral points of type $π_{+}$ and type $π_{-}$ of closed operators $A$ in a Hilbert space which is equipped with an indefinite inner product. It is shown t…

Spectral Points of Type π+​ and Type π−​ of Closed Operators in Indefinite Inner Product Spaces

Spectral Points of Type $π_{+}$ and Type $π_{-}$ of Closed Operators in Indefinite Inner Product Spaces