For more information about this meeting, contact Mathieu Stienon, Nigel Higson, Ping Xu.
| Title: | On homotopy invariance for algebras over colored PROPs |
|---|
| Seminar: | GAP Seminar |
|---|
| Speaker: | Mark Johnson, Penn State |
|---|
| Abstract: |
|---|
| Colored PROPs are a generalization of (colored) operads, built to allow two types of compositions, called horizontal and vertical. One motivation for this extension away from operads involves the so-called chain Segal PROP, whose algebras can be taken as a definition of Topological Conformal Field Theories. For some purposes, it is unfortunate that these algebra structures are not in any sense homotopy invariant. However, by taking a sort of CW approximation, one can produce a new PROP whose algebras are essentially homotopy invariant, as well as having their own well-behaved homotopy theory. The talk will mainly focus on describing the various structures involved and on properties (including existence) of the associated homotopy theories. |
Room Reservation Information
| Room Number: | MB106 |
|---|
| Date: | 11 / 09 / 2010 |
|---|
| Time: | 02:30pm - 03:30pm |
|---|
