In this paper we study the regularity of embeddings of finite--dimensional
subsets of Banach spaces into Euclidean spaces. In 1999, Hunt and Kaloshin
[Nonlinearity 12 1263-1275] introduced the thickness exponent and proved an
embedding theorem for subsets of Hilbert spaces with finite box--counting
dimension. In 2009, Robinson [Nonlinearity 22 711-728] defined the dual
thickness and extended the result to subsets of Banach spaces. Here we prove a
similar result for subsets of Banach spaces, using the thickness rather than
the dual thickness. We also study the relation between the box-counting
dimension and these two thickness exponents for some particular subsets of
ℓp.Comment: Submitted, Referres comments addresse