Theories with higher-order time derivatives and the Ostrogradsky ghost
 Svanberg, E (24 Nov 2022)
Wavelike nature of the vertical shear instability in global protoplanetary discs
 Svanberg, E Cui, C Latter, H Monthly Notices of the Royal Astronomical Society volume 514 issue 3 4581-4587 (14 Jun 2022)
Reduction or Enhancement of Stellarator Turbulence by Impurities
 García-Regaña, J Calvo, I Parra, F Thienpondt, H Physical Review Letters volume 133 issue 10 105101 (06 Sep 2024)
$G_2$-manifolds from 4d N=1 theories, part I: Domain walls
 Braun, A Sabag, E Sacchi, M Schäfer-Nameki, S SciPost Physics volume 17 issue 4 102 (03 Oct 2024)
Dynamics and control of infectious disease epidemics: compartmental modelling of variations in infectiousness and symptoms during infection
 Hart, W
Wed, 30 Oct 2024
16:00
L6

Counting subgroups of surface groups

Sophie Wright
(University of Bristol)
Abstract

The fundamental group of a hyperbolic surface has an infinite number of rank k subgroups. What does it mean, therefore, to pick a 'random' subgroup of this type? In this talk, I will introduce a method for counting subgroups and discuss how counting allows us to study the properties of a random subgroup and its associated cover.

A large deviation principle for the normalized excursion of an α-stable Lévy process without negative jumps
 Dort, L Goldschmidt, C Miermont, G ALEA – Latin American Journal of Probability and Mathematical Statistics volume 21 issue 2 1625-1653 (01 Jul 2024)
Combining hough transform and deep learning approaches to reconstruct ECG signals from printouts
 Krones, F Walker, B Lyons, T Mahdi, A (18 Oct 2024)
Subscribe to