*This seminar series is designed to support gender minorities in mathematics, such as women, transgender, gender-fluid, and non-binary mathematicians (graduate students, postdocs, and faculty). Participants who identify with gender minorities in mathematics are welcome to attend the lunch and encouraged to RSVP to be reimbursed.
Details
Where: Columbia University
When: Friday, November 4, 2022
Time: 11:45am - 4:00 pm
List of Speakers
Olga Kharlampovich, CUNY
2. Elena Giorgi, Columbia
Schedule
11:45 am - 1:00 pm Lunch in the Mathematics Lounge
1:00 pm - 1:50 pm Talk by Olga Kharlampovich
1:50 pm - 2:20 pm Break
2:20 pm - 3:10 pm Talk by Elena Giorgi
3:10 pm - 4:00 pm Tea
Arrival: Please meet the organizers in the lounge on the 5th floor of the Mathematics Building for lunch. Talks will be held in Math 203.
Directions
The Columbia campus is located at the 116th St stop along the MTA 1 line. The Mathematics building is on the west side of campus. See below for a map:
Titles and Abstracts
Olga Kharlampovich: Random groups
The idea of random groups draws its origins in Gromov's seminal paper introducing hyperbolic groups. Gromov, in order to emphasize the importance of the newly defined class of groups, claimed, in a definite statistical sense, that hyperbolicity is a typical property for finitely presented groups. In other words, almost every finitely presented group is hyperbolic. I will give an overview of the subject and talk about some of my results.
Elena Giorgi: The stability of black holes with matter
Black holes are fundamental objects in our understanding of the universe. The mathematics behind them has surprising geometric properties, and their dynamics is governed by hyperbolic PDEs. A basic question one may ask is whether these solutions to the Einstein equation are stable under small perturbations, which is a typical requirement to be physically meaningful. We will see how the dispersion of gravitational waves plays a key role in the stability problem, illustrating the main conjectures and some recent theorems regarding the evolution of black holes and their interaction with matter fields.
Reimbursement and Covid Guidelines
We will provide lunch for all of the participants. However, we will not be able to reimburse commuting costs for this event. See here for University Covid guidelines.