Geodesic
Symmetric models for lifetimes: the role of exchangeable equivalence relations
Bollettino della Unione matematica italiana, Série 8, 6B (2003) no. 1, pp. 111-123.

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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.
Si considera un modello relativo ad una popolazione eterogenea suddivisa in un numero finito di classi, in accordo con una relazione di equivalenza scambiabile. Con questa motivazione si studiano le proprietà delle relazioni di equivalenza scambiabili ed in particolare se ne caratterizza la struttura delle classi di equivalenza. 
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Gerardi, Anna; Torti, Barbara. Symmetric models for lifetimes: the role of exchangeable equivalence relations. Bollettino della Unione matematica italiana, Série 8, 6B (2003) no. 1, pp. 111-123. http://geodesic.mathdoc.fr/item/BUMI_2003_8_6B_1_a5/

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