Zeta and L-functions | Algebraic graph theory

Ihara zeta function

In mathematics, the Ihara zeta function is a zeta function associated with a finite graph. It closely resembles the Selberg zeta function, and is used to relate closed walks to the spectrum of the adjacency matrix. The Ihara zeta function was first defined by Yasutaka Ihara in the 1960s in the context of discrete subgroups of the two-by-two p-adic special linear group. Jean-Pierre Serre suggested in his book Trees that Ihara's original definition can be reinterpreted graph-theoretically. It was Toshikazu Sunada who put this suggestion into practice in 1985. As observed by Sunada, a regular graph is a Ramanujan graph if and only if its Ihara zeta function satisfies an analogue of the Riemann hypothesis. (Wikipedia).

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More identities involving the Riemann-Zeta function!

By applying some combinatorial tricks to an identity from https://youtu.be/2W2Ghi9idxM we are able to derive two identities involving the Riemann-Zeta function. http://www.michael-penn.net http://www.randolphcollege.edu/mathematics/

From playlist The Riemann Zeta Function

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Some identities involving the Riemann-Zeta function.

After introducing the Riemann-Zeta function we derive a generating function for its values at positive even integers. This generating function is used to prove two sum identities. http://www.michael-penn.net http://www.randolphcollege.edu/mathematics/

From playlist The Riemann Zeta Function

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Weil conjectures 1 Introduction

This talk is the first of a series of talks on the Weil conejctures. We recall properties of the Riemann zeta function, and describe how Artin used these to motivate the definition of the zeta function of a curve over a finite field. We then describe Weil's generalization of this to varie

From playlist Algebraic geometry: extra topics

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Understanding and computing the Riemann zeta function

In this video I explain Riemann's zeta function and the Riemann hypothesis. I also implement and algorithm to compute the return values - here's the Python script:https://gist.github.com/Nikolaj-K/996dba1ff1045d767b10d4d07b1b032f

From playlist Programming

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More Riemann Zeta function identities!!

Building upon our previous video, we present three more Riemann zeta function identities. Video 1: https://youtu.be/2W2Ghi9idxM Video 2: https://www.youtube.com/watch?v=bRdGQKwusiE http://www.michael-penn.net https://www.researchgate.net/profile/Michael_Penn5 http://www.randolphcollege.e

From playlist The Riemann Zeta Function

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The Riemann Hypothesis - Picturing The Zeta Function

in this chapter i will show how to visualize the zeta and eta functions in the proper way meaning that everything on those two functions is made out of spirals all over the grid and the emphasis in this chapter will be on the center points of the spirals mainly the divergent spirals 0:00

From playlist Summer of Math Exposition Youtube Videos

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Special values of L-functions and Ihara’s lemma for quaternionic Shimura vari.. by Matteo Tamiozzo

PROGRAM ELLIPTIC CURVES AND THE SPECIAL VALUES OF L-FUNCTIONS (HYBRID) ORGANIZERS: Ashay Burungale (CalTech/UT Austin, USA), Haruzo Hida (UCLA), Somnath Jha (IIT Kanpur) and Ye Tian (MCM, CAS) DATE: 08 August 2022 to 19 August 2022 VENUE: Ramanujan Lecture Hall and online The program pla

From playlist ELLIPTIC CURVES AND THE SPECIAL VALUES OF L-FUNCTIONS (2022)

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Spectral Zeta Functions

For the latest information, please visit: http://www.wolfram.com Speaker: Paul Abbott When the eigenvalues of an operator A can be computed and form a discrete set, the spectral zeta function of A reduces to a sum over eigenvalues, when the sum exists. Belloni and Robinett used the “quan

From playlist Wolfram Technology Conference 2014

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Galois theory for Schrier graphs: bounded automata by Hemant Bhate

PROGRAM DYNAMICS OF COMPLEX SYSTEMS 2018 ORGANIZERS Amit Apte, Soumitro Banerjee, Pranay Goel, Partha Guha, Neelima Gupte, Govindan Rangarajan and Somdatta Sinha DATE: 16 June 2018 to 30 June 2018 VENUE: Ramanujan hall for Summer School held from 16 - 25 June, 2018; Madhava hall for W

From playlist Dynamics of Complex systems 2018

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Multiple Zeta Values - Francis Brown

Francis Brown CNRS/Institut de Math. de Jussieu, Paris April 19, 2012 I will report on some recent work on multiple zeta values. I will sketch the definition of motivic multiple zeta values, which can be viewed as a prototype of a Galois theory for certain transcendental numbers, and then

From playlist Mathematics

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Mike Boyle - Nonnegative matrices : Perron Frobenius theory and related algebra (Part 3)

Nonnegative matrices : Perron Frobenius theory and related algebra (Part 3) Licence: CC BY NC-ND 4.0Lecture I. I’ll give a complete elementary presentation of the essential features of the Perron Frobenius theory of nonnegative matrices for the central case of primitive matrices (the "Perr

From playlist École d’été 2013 - Théorie des nombres et dynamique

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Holly Krieger, Equidistribution and unlikely intersections in arithmetic dynamics

VaNTAGe seminar on May 26, 2020. License: CC-BY-NC-SA. Closed captions provided by Marley Young.

From playlist Arithmetic dynamics

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Laurent Massoulié : Non-backtracking spectrum of random graphs: community detection and ...

Abstract: A non-backtracking walk on a graph is a directed path such that no edge is the inverse of its preceding edge. The non-backtracking matrix of a graph is indexed by its directed edges and can be used to count non-backtracking walks of a given length. It has been used recently in th

From playlist Combinatorics

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Gunther Cornelissen: The Ihara zeta function and noncommutative boundaries

The lecture was held within the framework of the Hausdorff Trimester Program: Non-commutative Geometry and its Applications and the Workshop: Number theory and non-commutative geometry 25.11.2014

From playlist HIM Lectures: Trimester Program "Non-commutative Geometry and its Applications"

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Mark Pollicott - Dynamical Zeta functions (Part 2)

Dynamical Zeta functions (Part 1) Licence: CC BY NC-ND 4.0

From playlist École d’été 2013 - Théorie des nombres et dynamique

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Francis BROWN - Graph Complexes, Invariant Differential Forms and Feynman integrals

Kontsevich introduced the graph complex GC2 in 1993 and raised the problem of determining its cohomology. This problem is of renewed importance following the recent work of Chan-Galatius-Payne, who related it to the cohomology of the moduli spaces Mg of curves of genus g. It is known by Wi

From playlist Algebraic Structures in Perturbative Quantum Field Theory: a conference in honour of Dirk Kreimer's 60th birthday

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Bertrand Eynard: Integrable systems and spectral curves

Usually one defines a Tau function Tau(t_1,t_2,...) as a function of a family of times having to obey some equations, like Miwa-Jimbo equations, or Hirota equations. Here we shall view times as local coordinates in the moduli-space of spectral curves, and define the Tau-function of a spect

From playlist Analysis and its Applications

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another Riemann-Zeta function identity.

We present an interesting identity involving the even values of the Riemann-Zeta function. Some more Riemann-zeta function identities: https://youtu.be/2W2Ghi9idxM https://youtu.be/bRdGQKwusiE https://youtu.be/JwxgwXUruRM Please Subscribe: https://www.youtube.com/michaelpennmath?sub_con

From playlist The Riemann Zeta Function

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Alp Bassa: Good Recursive Towers

Curves over finite fields of large genus with many rational points have been of interest for both theoretical reasons and for applications. In the past, various methods have been employed for the construction of such curves. One such method is by means of explicit recursive equations and w

From playlist Algebraic and Complex Geometry

Related pages

Graph (discrete mathematics) | Riemann hypothesis | Ramanujan graph | Free group | Symbolic dynamics | Regular graph | Discrete group | Closed geodesic | Adjacency matrix | Graph polynomial | Mathematics | Selberg zeta function | Circuit rank | Spectrum of a matrix | Cycle (graph theory) | Spectral graph theory | Special linear group | P-adic number | Ruelle zeta function | Circular shift