8 citations · 36 across the 32 of their papers we have counts for
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math.NA2013
Scalable Frames and Convex Geometry
Gitta Kutyniok, Kasso A. Okoudjou, Friedrich Philipp
The recently introduced and characterized scalable frames can be considered as those frames which allow for perfect preconditioning in the sense that the frame vectors can be resca…
math.SP2013★ 1 cited
Estimates on the non-real eigenvalues of regular indefinite Sturm-Liouville problems
Jussi Behrndt, Shaozhu Chen, Friedrich Philipp +1
Regular Sturm-Liouville problems with indefinite weight functions may possess finitely many non-real eigenvalues. In this note we prove explicit bounds on the real and imaginary pa…