Coefficient Quantization in Banach Spaces

Details Coefficient Quantization in Banach Spaces Coefficient Quantization in Banach Spaces

2006-06-13

arxiv.org/abs/math/0606317v1

Mathematics

Functional Analysis

LaTeX, 28 pages

Scientific paper

Let (e_i) be a dictionary for a separable Banach space X. We consider the problem of approximation by linear combinations of dictionary elements with quantized coefficients drawn usually from a `finite alphabet'. We investigate several approximation properties of this type and connect them to the Banach space geometry of X. The existence of a total minimal system with one of these properties, namely the coefficient quantization property, is shown to be equivalent to X containing c_0.

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