@incollection{eprints119,
           title = {A Category of Explicit Fusions},
          series = {Lecture Notes in Computer Science},
            year = {2008},
          volume = {5065},
           pages = {544--562},
       booktitle = {Concurrency, Graphs and Models: Essays Dedicated to Ugo Montanari on the Occasion of His 65th Birthday},
          editor = {Pierpaolo Degano and Rocco De Nicola and Jos{\'e} Meseguer},
       publisher = {Springer},
            note = {The final publication is available at www.springerlink.com.},
          author = {Filippo Bonchi and Maria Grazia Buscemi and Vincenzo Ciancia and Fabio Gadducci},
             url = {http://eprints.imtlucca.it/119/},
        abstract = {Name passing calculi are nowadays an established field on
its own. Besides their practical relevance, they offered an intriguing challenge,
since the standard operational, denotational and logical methods
often proved inadequate to reason about these formalisms. A domain
which has been successfully employed for languages with asymmetric
communication, like the {\ensuremath{\pi}}-calculus, are presheaf categories based on (injective)
relabelings, such as SetI. Calculi with symmetric binding, in the
spirit of the fusion calculus, give rise to new research problems. In this
work we examine the calculus of explicit fusions, and propose to model
its syntax and semantics using the presheaf category SetE, where E is the
category of equivalence relations and equivalence preserving morphisms.}
}