L-functions

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Degree 2

This is the starting point for the L-functions site. In this web site we are interested in giving information about L-functions from the Selberg class S. The information is intended to be both qualitative and quantitative. We intend to list as many properties and features of specific L-functions as possible and also to allow for the computation of coefficients, special values, and zeros upon request by the reader.

The class S

These are Dirichlet series

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which satisfy 4 axioms as given by Selberg.

Functional Equation

tex2html_wrap_inline31 S satisfies a functional equation that can be written uniquely as

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Data

There is a unique 4-tuple of data that can be associated to F:

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where

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We will call d the degree, q the level, tex2html_wrap_inline45 the eigenvalue set, and tex2html_wrap_inline47 the root number of F.

Examples

tex2html_wrap_inline51is the data for the Riemann zeta function.

tex2html_wrap_inline53 is the data for the Dirichlet L-function with the character which is the Legendre symbol modulo 5

tex2html_wrap_inline55 is the data for the Dirichlet L-function with the character tex2html_wrap_inline57 modulo 5 defined by tex2html_wrap_inline59 .

tex2html_wrap_inline61 is the data for an element of S corresponding to a holomorphic newform of weight k for the full modular group.

For more information about the Selberg class, see the paper by Conrey and Ghosh.

The data are classified first by degree, then by level, then by eigenvalue, then by root number.