Semigroups of Semi-copulas and Evolution of Dependence at Increase of Age.
Statistical modelling of deformation measurements.
Summaries of articles published in this issue
Symmetric models for lifetimes: the role of exchangeable equivalence relations
A model of a heterogeneous population partitioned into a finite number of classes according an exchangeable equivalence relation is studied. With this motivation the properties of exchangeable equivalence relations are investigated and, in particular, the structure of its equivalence classes is characterized.