2007-04-26Z2011-03-11T08:56:50Zhttp://cogprints.org/id/eprint/5511This item is in the repository with the URL: http://cogprints.org/id/eprint/55112007-04-26ZA Brief Introduction to N-universesI describe in this paper the basic elements of the n-universes, a methodological tool originally introduced in Franceschi (2001) in the context of the study of Goodman's paradox. As the n-universes can be used in wide-ranging applications, such as thought experiments, I describe them from an essentially pragmatic standpoint, i.e. by describing accurately the step-by-step process which leads to a given modelisation.Paul Franceschi