PUBLIC TALK
Groups, fractals and spectra
Tatiana SMIRNOVA-NAGNIBEDA (UNIGE)
When: Friday, May 8, 2026 | 14:00
Where: Section of mathematics, Lecture room, 8th floor
ABSTRACT
A group is a fundamental mathematical concept used to describe symmetries. In this talk, we focus on self-similar groups which arise as groups of symmetries of infinite rooted trees and whose structure reflects self-similarity of the trees. These groups play an important role in Geometric Group Theory and also found interesting applications in Spectral Graph Theory, providing examples of infinite graphs that illustrate remarkable phenomena such as cospectrality, gaps in the spectrum, singular spectral measures.
In the framework of the nomination for promotion of Prof. Tatiana Smirnova-Nagnibeda to full Professor in the Section of Mathematics
PROGRAM
14:00-14:15 Welcome and presentation of the committee members
14:15-14:55 Lecture "Groups, fractals and spectra" by Tatiana SMIRNOVA-NAGNIBEDA
14:55-15:15 Questions after the lecture and coffee break
About the speaker
Tatiana Smirnova-Nagnibeda
Tatiana Smirnova-Nagnibeda obtained her PhD at UNIGE. Subsequently, she held positions at ETH Zurich and KTH Stockholm before re-joining UNIGE as a professor.