23 May 2006 
1:00 - 2:30   M Weber 

Title: 2-toposes III

Abstract:  In previous lectures the notion of 2-topos, its associated
yoneda structure and some examples were discussed. In this talk we
will explain some of the theory -- in particular: the structure of
$\Omega$ (the codomain of the classifying discrete opfibration), the
2-dimensional analogue of "natural numbers object", and (time
permitting) some applications to the general theory of operads.