Cornell University

This is a past event. Its details are archived for historical purposes.

The contact information may no longer be valid.

Please visit our current events listings to look for similar events by title, location, or venue.

Department of Mathematics Michler Lecture Series - Julie Bergner, The University of Virginia. Talk Title: 2-Segal structures and the Waldhausen S-construction

Thursday, October 18, 2018 at 4:00pm to 5:00pm

Malott Hall, 532

The Ruth I. Michler Memorial Prize of the AWM is awarded annually to a woman recently promoted to associate professor or an equivalent position in the mathematical sciences. The prize provides a fellowship for the awardee and enables her to focus on her research in the stimulating environment of the Cornell University Mathematics Department during a semester that is free from teaching obligations. Recently promoted associate professors face many challenges as they prepare to take on greater leadership in research and in the profession. The Ruth I. Michler Memorial Prize honors outstanding women at this stage of their careers. Each year, the Michler Fellow is invited to give a lecture to an audience of faculty and graduate students.

Title: 2-Segal structures and the Waldhausen S-construction

Abstract: The structure of a 2-Segal space was defined by Dyckerhoff and Kapranov and independently by Galvez-Carrillo, Kock, and Tonks under the name of decomposition space.   Both groups found many examples in algebra, topology, and combinatorics, yet a common one was the output of Waldhausen's S-construction when applied to an exact category.  In joint work with Osorno, Ozornova, Rovelli, and Scheimbauer, we give a more general version of this construction so that every 2-Segal space arises from it.

Google Calendar iCal Outlook
Event Type









Contact E-Mail

Contact Name

Heather Peterson

Contact Phone



Julie Bergner

Speaker Affiliation

The University of Virginia

Dept. Web Site

Disability Access Information

If you need any special accommodations (e.g., dietary constraints, mobility constraints, etc.), please contact Heather Peterson


3:30pm in 532 Malott Hall

Open To


Recent Activity