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A monstrous(?) complex hyperbolic orbifold

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Authors : Basak, Tathagata (Author of the conference)
CIRM (Publisher )

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Abstract : I will report on progress with Daniel Allcock on the ”Monstrous Proposal”, namely the conjecture: Complex hyperbolic 13-space, modulo a particular discrete group, and with orbifold structure changed in a simple way, has fundamental group equal to (MxM)(semidirect)2, where M is the Monster finite simple group. Our progress is a proof that this orbifold fundamental group has generators that satisfy defining relations for (MxM)(semidirect) 2. It follows that either the monstrous proposal is true, or else the orbifold fundamental group collapses to Z/2. The generators and relations are extremely natural from the complex hyperbolic perspective, keeping hopes high for the conjecture.

MSC Codes :
20F36 - Braid groups; Artin groups
32S22 - Relations with arrangements of hyperplanes
57M05 - Fundamental group, presentations, free differential calculus
52C35 - Arrangements of points, flats, hyperplanes

    Information on the Video

    Film maker : Hennenfent, Guillaume
    Language : English
    Available date : 27/07/2022
    Conference Date : 07/07/2022
    Subseries : Research talks
    arXiv category : Geometric Topology
    Mathematical Area(s) : Algebra ; Geometry ; Algebraic & Complex Geometry ; Topology
    Format : MP4 (.mp4) - HD
    Video Time : 01:00:51
    Targeted Audience : Researchers ; Graduate Students ; Doctoral Students, Post-Doctoral Students
    Download : https://videos.cirm-math.fr/2022-07-07_Basak.mp4

Information on the Event

Event Title : Complex Hyperbolic Geometry and Related Topics / Autour de la géométrie hyperbolique complexe
Event Organizers : Bucher, Michelle ; Deraux, Martin ; Paupert, Julien ; Rouillier, Fabrice ; Will, Pierre
Dates : 04/07/2022 - 08/07/2022
Event Year : 2022
Event URL : https://conferences.cirm-math.fr/2622.html

Citation Data

DOI : 10.24350/CIRM.V.19936403
Cite this video as: Basak, Tathagata (2022). A monstrous(?) complex hyperbolic orbifold. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19936403
URI : http://dx.doi.org/10.24350/CIRM.V.19936403

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