TY - RPRT AU - Mera Rivas, María Eugenia AU - Morán Cabré, Manuel PY - 2000 SN - 2255-5471 UR - https://hdl.handle.net/20.500.14352/64137 AB - We prove that the upper porosity of any Radon probability measure is either 0 or 1/2 LA - eng A3 - Facultad de Ciencias Económicas y Empresariales. Decanato KW - Doubling condition KW - Porosity of sets KW - Porosity of measures KW - Tangent measures. TI - A zero-one half law for porosity of measures TY - technical report VL - 2000 ER -