%0 Journal Article %J Journal of Applied Logic %D 2012 %T A modal type theory for formalizing trusted communications %A Primiero, Giuseppe %A Taddeo, Mariarosaria %X

This paper introduces a multi-modal polymorphic type theory to model epistemic processes characterized by trust, defined as a second-order relation affecting the communication process between sources and a receiver. In this language, a set of senders is expressed by a modal prioritized context, whereas the receiver is formulated in terms of a contextually derived modal judgement. Introduction and elimination rules for modalities are based on the polymorphism of terms in the language. This leads to a multi-modal non-homogeneous version of a type theory, in which we show the embedding of the modal operators into standard group knowledge operators.

%B Journal of Applied Logic %V 10 %P 92–114 %G eng %R 10.1016/j.jal.2011.12.002