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Unramified graph covers of finite degree

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Post-edited
Authors : Li, Winnie (Author of the conference)
CIRM (Publisher )

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unramified covers Galois theory of graphs fundamental group primes of graphs characterization of normal covers Cebotarev density theorem isospectrality for numbers fields isospectral graphs

Abstract : Given a finite connected undirected graph $X$, its fundamental group plays the role of the absolute Galois group of $X$. The familiar Galois theory holds in this setting. In this talk we shall discuss graph theoretical counter parts of several important theorems for number fields. Topics include
(a) Determination, up to equivalence, of unramified normal covers of $X$ of given degree,
(b) Criteria for Sunada equivalence,
(c) Chebotarev density theorem.
This is a joint work with Hau-Wen Huang.

MSC Codes :
05C25 - Graphs and abstract algebra (groups, rings, fields, etc.)
05C50 - Graphs and linear algebra (matrices, eigenvalues, etc.)
11R32 - Galois theory
11R44 - Distribution of prime ideals
11R45 - Density theorems

    Information on the Video

    Film maker : Hennenfent, Guillaume
    Language : English
    Available date : 13/04/16
    Conference Date : 30/03/2016
    Subseries : Research talks
    arXiv category : Number Theory ; Combinatorics
    Mathematical Area(s) : Combinatorics ; Number Theory
    Format : MP4 (.mp4) - HD
    Video Time : 00:47:11
    Targeted Audience : Researchers
    Download : https://videos.cirm-math.fr/2016-03-30_Li.mp4

Information on the Event

Event Title : Dynamics and graphs over finite fields: algebraic, number theoretic and algorithmic aspects / Dynamique et graphes sur les corps finis : aspects algebriques, arithmétiques et algorithmiques
Event Organizers : Chang, Mei-Chu ; von zur Gathen, Joachim ; Ostafe, Alina ; Pappalardi, Francesco
Dates : 29/03/16 - 02/04/16
Event Year : 2016
Event URL : http://conferences.cirm-math.fr/1391.html

Citation Data

DOI : 10.24350/CIRM.V.18951603
Cite this video as: Li, Winnie (2016). Unramified graph covers of finite degree. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.18951603
URI : http://dx.doi.org/10.24350/CIRM.V.18951603

See Also

Bibliography

  • Cassels, J.W.S. (Ed.), & Fröhlich, A. (Ed.). (2010). Algebraic number theory. London: London Mathematical Society -

  • Huang, H-W., & Li, W. Unramified graph covers of finite degree, preprint, 2015 -

  • Somodi, M. (2015). On Sunada equivalent graph coverings. Journal of Combinatorics and Number Theory, 7(2) -

  • A. Terras, Zeta Functions of Graphs: A Stroll through the Garden. Cambridge Studies in Advanced Mathematics, vol. 128 (2010) - http://bibli.cirm-math.fr/Record.htm?idlist=1&record=19271403124910996859



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