Prospects for γ-ray observations of the Perseus galaxy cluster with the Cherenkov Telescope Array
 Abe, K Abe, S Acero, F Acharyya, A Adam, R Aguasca-Cabot, A Agudo, I Aguirre-Santaella, A Alfaro, J Alfaro, R Alvarez-Crespo, N Alves Batista, R Amans, J Amato, E Angüner, E Antonelli, L Aramo, C Araya, M Arcaro, C Arrabito, L Asano, K Ascasíbar, Y Aschersleben, J Ashkar, H Journal of Cosmology and Astroparticle Physics volume 2024 issue 10 (01 Oct 2024)
Wed, 16 Oct 2024
16:00
L6

Solvability and Order Type for Finite Groups

Pawel Piwek
(University of Oxford)
Abstract

How much can the order type - the list of element orders (with multiplicities)—reveal about the structure of a finite group G? Can it tell us whether G is abelian, nilpotent? Can it always determine whether G is solvable? 

This last question was posed in 1987 by John G. Thompson and I answered it negatively this year. The search for a counterexample was quite a puzzle hunt! It involved turning the problem into linear algebra and solving an integer matrix equation Ax=b. This would be easy if not for the fact that the size of A was 100,000 by 10,000…

Mon, 02 Dec 2024
16:00
C3

TBC

Leo Gitin
(University of Oxford)
Abstract

TBC

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Exploring the space of graphs with fixed discrete curvatures
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Graph curvature via resistance distance
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Pseudoinverse of the Laplacian and best spreader node in a network
 Van Mieghem, P Devriendt, K Cetinay, H Physical Review E volume 96 issue 3 032311 (15 Sep 2017)
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