, it is a consecrated right of the arbitral tribunal to ask for any other evidence in a determined period of time. The … regulations referring to the administration of evidence stipulate that these should remain at the discretion of the arbitral … tribunal, which has the opportunity to apply a flexible procedure for stating the situation of fact. The efforts to eliminate …

In this paper we axiomatically characterize two recursive procedures for defining a social group. The first procedure … of the second procedure is the set of all individuals who define themselves as members of the social group. Both …