Investigation of the approximation problem of the pattern set by means of the n-diameter and epsilon -entropy of a set, which are quantities that reflect topological characteristics of the set itself. It is found that the pattern distance derived from a norm is of a restricted type, for it must satisfy transitivity and homogeneity. Distances not obeying transitivity or homogeneity are quite conceivable, but they cannot be treated by the epsilon -entropy theory of the Hilbert space.
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Univ of Mississippi, University, MS,, USA, Univ of Mississippi, University, MS, USAUniv of Mississippi, University, MS,, USA, Univ of Mississippi, University, MS, USA
Henley, James P.
Sadana, Ajit
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Univ of Mississippi, University, MS,, USA, Univ of Mississippi, University, MS, USAUniv of Mississippi, University, MS,, USA, Univ of Mississippi, University, MS, USA