Higher Operads Week,
Centre de Recerca
Matemàtica, Barcelona, 14/4/08
Description This was a one-hour introduction to higher-dimensional operads, concentrating on the case of Batanin's globular operads.
Slides In this pdf file (800KB).
Mark Weber tells me that the answer to the question at the bottom of the last slide is 'no', and that a proof can be found in this paper of his with Michael Batanin.
Michael Batanin, Monoidal globular categories as a natural environment for the theory of weak n-categories, Advances in Mathematics 136 (1998), 39–103.
Tom Leinster, Higher Operads, Higher Categories, Cambridge University Press, 2004.