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Arcs as an effective model

Presented by: 
R Kaufmann Purdue University
Thursday 14th March 2013 - 10:30 to 12:00
INI Seminar Room 2
The arc operad and its variations have proven itself in many instances to be a very clean minimal and explicit tool; for instance in giving models for the little discs, framed little discs, E_n operads, Sullivan PROP, etc on the topological level by basically the same formalism on surface. Furthermore, these models have a very nice cellular structure and hence are naturally suited to solve chain level conjectures. We will present some of these constructions and draw parallels to other activities at the program.
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons