manuscripta mathematica

, Volume 72, Issue 1, pp 5–25 | Cite as

Perimeter on fractal sets

  • Andrea Braides
  • Piero D’Ancona


The Hausdorff measure with fractional index is used in order to define a functional on measurable sets of the plane. A fractal set, constructed using the well-known Von Koch set, is involved in the definition. This functional is proved to arise as the limit of a sequence of classical functionals defined on sets of finite perimeter. Thus it is shown that a natural extension of the ordinary functionals of the calculus of variations leads both to fractal sets and to the fractional Hausdorff measure.


Lower Semicontinuous Equilateral Triangle Hausdorff Measure Lower Semicontinuous Function Geometric Measure Theory 
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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Andrea Braides
    • 1
  • Piero D’Ancona
    • 2
  1. 1.Dip. di Automazione IndustrialeUniversità di BresciaBrescia
  2. 2.Dip. di MatematicaII Università di RomaRoma

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