L-series for holomorphic modular forms for Hecke triangle groups

[jjermann]

Support for L-series of holomorphic modular forms for
Hecke triangle groups for all n=3, 4, 5, ... , infinity.

The implementation is based on Dokchitser (from pari).

In the arithmetic cases n=3, 4, 6, infinity the conductor
is 1, 2, 3, 4 respectively. In the non-arithmetic cases
the conductor is irrational.

The ticket depends/is based on #16883.

Depends on #16883

CC: @sagetrac-mraum

Component: modular forms

Keywords: L-series L-function modular forms hecke triangle Dokchitser

Author: Jonas Jermann

Branch/Commit: bf0f14a

Reviewer: Martin Raum

Issue created by migration from https://trac.sagemath.org/ticket/16923

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

87df16c	Annotations to Jonas's implementation.
05e551d	address review remarks
5c0f38e	Merge branch 'u/jj/theta_group' into u/jj/hecke_lseries

[sagetrac-git]

Changed commit from 24220dc to 5c0f38e

[sagetrac-git]

Changed commit from 5c0f38e to bf0f14a

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

bf0f14a

add text to NotImplementedError

[jjermann]

Reviewer: Martin Raum

[vbraun]

Changed branch from u/jj/hecke_lseries to bf0f14a