On the hausdorff measure of certain plane set projections

• Morales Rojas, Carlos Arnoldo ^[1]
  1. [1] Universidade Federal do Rio de Janeiro

     Universidade Federal do Rio de Janeiro

     Brasil

     
• Localización: Pesquimat, ISSN-e 1609-8439, ISSN 1560-912X, Vol. 2, Nº. 2, 1999
• Idioma: inglés
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• Resumen

  • A characterization of plane sets whose projection have zero Hausdorff measure is given. This is obtained through the study of an angular density introduced first by Marstrand [2].