Tuesday, 22 October 2002
2:30 - 4:00   Mark Weber
Trees, higher categories and operads
ABSTRACT: A distinguishing feature of Michael Batanin's globular approach to higher dimensional algebra, is that trees are regarded properly as combinatorial objects, rather than as certain pointed one-dimensional CW complexes as is more common in algebraic topology. In this talk the role of trees both in higher category theory and in the description of the topological operads important in homotopy theory will be reviewed.