Displaying similar documents to “On the sprectra of certain classes of Room frames.”

Subsequences of frames

R. Vershynin (2001)

Studia Mathematica

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Every frame in Hilbert space contains a subsequence equivalent to an orthogonal basis. If a frame is n-dimensional then this subsequence has length (1 - ε)n. On the other hand, there is a frame which does not contain bases with brackets.