20/01/2017, 16:00 — 17:00 — Room P3.10, Mathematics Building
Ieke Moerdijk, University of Utrecht
Shuffles and Trees
The notion of "shuffle" of linear orders plays a central role in elementary topology. Motivated by tensor products of operads and of dendroidal sets, I will present a generalization to shuffles of trees. This combinatorial operation of shuffling trees can be understood by itself, and enjoys some intriguing properties. It raises several questions of a completely elementary nature which seem hard to answer.
