CALCULI OF INDIVIDUALS AND SOME EXTENSIONS: AN OVERVIEW
Karl-Georg Niebergall · 2009
and Hannes Leitgeb, and the Österreichische Ludwig Wittgenstein Gesellschaft for the invitation, and the participants of the talk for comments. 1For Goodman (1951), the calculus of individuals was a specific theory in L 1 [o]; it is called "CI + FUS 1 " below.In the meantime, "calculus of individuals" has become a predicate which is now ascribed to many theories.