• David E. Edmunds
  • W. Desmond Evans
Part of the Springer Monographs in Mathematics book series (SMM)


In this Chapter we collect some definitions and results which will be useful later in the book. Virtually no proofs are given, but we provide references to works where these matters are dealt with in a comprehensive way. All vector spaces which will be mentioned will be assumed to be over the complex field, unless otherwise stated.


Approximation Number Outer Measure Entropy Number Minkowski Dimension Finite Perimeter 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • David E. Edmunds
    • 1
  • W. Desmond Evans
    • 2
  1. 1.Department of MathematicsSussex UniversityBrightonUK
  2. 2.School of MathematicsCardiff UniversityCardiffUK

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