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[](https://github.com/archimede-institut/sage-euler-product/actions/workflows/manual.yml)
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# Euler Product for SageMath
**Computing Lattice Invariant Euler Products**
The **sage-euler-product** package for SageMath adds functionality related to Number Theory. It is based on SageMath <https://www.sagemath.org>_ and relies heavily on:
gmp or mpir for arbitrary precision arithmetic
PARI/GP for number field computations
Prerequisites
Installing sage-euler-product requires a working Sage installation.
Installation
The module is distributed on PyPI and is easily installed through the Python package manager pip. If you downloaded a binary from the SageMath website (including the Cygwin version running on Windows) or compiled from source, run the following command::
$ sage -pip install sage-euler-product [--user]
The --user option is optional and allows to install the module in your user space (and does not require administrator rights).
If you use Debian or Ubuntu and you installed Sage through the operating system's package manager (that is, the package sagemath), run these two commands::
$ source /usr/share/sagemath/bin/sage-env
$ pip install sage-euler-product --user
If you use Arch Linux, you need to install from source (see next section).
Install and use source version
This section provides detailed instructions on how to download, modify and install the development version of **sage-euler-product**. In all commands,
PIP has to be replaced by either pip, pip2, or sage -pip
PYTHON has to be replaced by either python, python2 or sage -python
If you are an Arch Linux user with the sagemath package installed, use PIP=pip2 and PYTHON=python2. If you downloaded SageMath as a tarball or installed it from source use PIP='sage -pip' and PYTHON='sage -python'.
You can install the latest development version in one line with::
$ PIP install git+https://github.com/archimede-institut/sage-euler-product [--user]
As before, the --user option is optional and when specified will install the module in your user space.
You can also perform a two stage installation that will allow you to modify the source code. The first step is to clone the repository::
$ git clone https://github.com/archimede-institut/sage-euler-product
The above command creates a repository sage-euler-product with the source code, documentation and miscellaneous files. You can then change to the directory thus created and install the surface dynamics module with::
$ cd sage-euler-product
$ PIP install . [--user]
Do not forget the . that refers to the current directory.
When you don't want to install the package or you are testing some modifications to the source code, a more convenient way of using **sage-euler-prodct** is to do everything locally. To do so, you need to compile the module in place via::
$ PYTHON setup.py build_ext --inplace
Once done, you can import the sage-euler-product module. To check that you are actually using the right module (i.e. the local one) you can do in a SageMath session::
sage: import euler_product
sage: euler_product.__path__ # random
['/home/you/sage-euler-product/euler_product/']
The result of the command must correspond to the path of the repository created by the command git clone given above. The compilation step PYTHON setup.py build_ext has to be redone each time you modify a C or Cython source file (i.e. with .c, .h, .pxd or .pyx extension). In other words, it is not needed if you only modify or create Python files (i.e. .py files).
If you wish to install your custom version of sage-euler-product just use PIP as indicated before.
Documentation
complete module documentation: https://archimede-institut.github.io/sage-euler-product/
Check
After installing **sage-euler-product**, check that it works by launching Sage and typing the following commands. You should get the same output as below. ::
sage: from euler_product.all import *
sage: from euler_product.lattice_invariant_euler_produ import get_euler_products
sage: get_euler_products(3, 1, 1-x^2,1, 100)
Computing the structural invariants ... done.
We have Delta = 2 and beta = 2
We use big_m = 310 , big_p = 300 and working prec = 653 .
Computing the finite products for p < 300 ... done.
Computing C_A(K, m, F/H) ... -------------------
For p+3ZZ in frozenset({1})
For F(x) = -x^2 + 1
and H(x) = 1
the product of F(1/p)/H(1/p) is between
0.9671040753637981066150556834173635260473412207450092130719978569438733967843271277395717230016746853806050215621235810749643636399725665325875376146914709362753787689855429317947529895445140974344
and
0.9671040753637981066150556834173635260473412207450092130719978569438733967843271277395717230016746853806050215621235810749643636399725665325875376146914709362753787689855429317947529895445140974475
(Obtained: 193 correct decimal digits)
-------------------
For p+3ZZ in frozenset({2})
For F(x) = -x^2 + 1
and H(x) = 1
the product of F(1/p)/H(1/p) is between
0.7071813747951674302088659938984504109243584468119496848353517677901518159831128643782536704398941052120208041311403202957250160794697319584608281454011743387515885835706146696365506658500107821107
and
0.7071813747951674302088659938984504109243584468119496848353517677901518159831128643782536704398941052120208041311403202957250160794697319584608281454011743387515885835706146696365506658500107821228
(Obtained: 193 correct decimal digits)
Time taken: 1.920718120993115 seconds.
((frozenset({1}), frozenset({2})),
((0.9671040753637981066150556834173635260473412207450092130719978569438733967843271277395717230016746853806050215621235810749643636399725665325875376146914709362753787689855429317947529895445140974344,
0.9671040753637981066150556834173635260473412207450092130719978569438733967843271277395717230016746853806050215621235810749643636399725665325875376146914709362753787689855429317947529895445140974475),
(0.7071813747951674302088659938984504109243584468119496848353517677901518159831128643782536704398941052120208041311403202957250160794697319584608281454011743387515885835706146696365506658500107821107,
0.7071813747951674302088659938984504109243584468119496848353517677901518159831128643782536704398941052120208041311403202957250160794697319584608281454011743387515885835706146696365506658500107821228)))
https://github.com/archimede-institut/sage-euler-product
Assuming you have the program git on your computer, you can install the development version with the command::
$ sage -pip install git+https://github.com/archimede-institut/sage-euler-product [--user]
Authors
Olivier Ramar\'e: see https://ramare-olivier.github.io/Maths/mcom3630.pdf for complete Mathematical references
Dominique Benielli: maintainerDeveloppement Cell, Institut Archimède Aix-Marseille Université
How to cite this project
If you have used this project for please cite us as described on our zenodo site.
Versions
The first release of sage-euler-product will appear soon as a sagemath spkg.
.
Raw data
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"description": "[](https://github.com/archimede-institut/sage-euler-product/actions/workflows/tests.yml)\n[](https://github.com/archimede-institut/sage-euler-product/actions/workflows/manual.yml)\n[](https://github.com/archimede-institut/sage-euler-product/actions/workflows/lint.yml)\n[ ](https://github.com/archimede-institut/sage-euler-product/actions/workflows/pages/pages-build-deployment.yml)\n\n \n# Euler Product for SageMath\n\n\n **Computing Lattice Invariant Euler Products** \n\nThe **sage-euler-product** package for SageMath adds functionality related to Number Theory. It is based on SageMath <https://www.sagemath.org>_ and relies heavily on:\n\ngmp or mpir for arbitrary precision arithmetic\nPARI/GP for number field computations\n\n\nPrerequisites\nInstalling sage-euler-product requires a working Sage installation. \n\nInstallation\nThe module is distributed on PyPI and is easily installed through the Python package manager pip. If you downloaded a binary from the SageMath website (including the Cygwin version running on Windows) or compiled from source, run the following command::\n\n $ sage -pip install sage-euler-product [--user]\n\nThe --user option is optional and allows to install the module in your user space (and does not require administrator rights).\n\nIf you use Debian or Ubuntu and you installed Sage through the operating system's package manager (that is, the package sagemath), run these two commands::\n\n $ source /usr/share/sagemath/bin/sage-env\n $ pip install sage-euler-product --user\n\nIf you use Arch Linux, you need to install from source (see next section).\n\nInstall and use source version\nThis section provides detailed instructions on how to download, modify and install the development version of **sage-euler-product**. In all commands,\n\nPIP has to be replaced by either pip, pip2, or sage -pip\nPYTHON has to be replaced by either python, python2 or sage -python\nIf you are an Arch Linux user with the sagemath package installed, use PIP=pip2 and PYTHON=python2. If you downloaded SageMath as a tarball or installed it from source use PIP='sage -pip' and PYTHON='sage -python'.\n\nYou can install the latest development version in one line with::\n\n $ PIP install git+https://github.com/archimede-institut/sage-euler-product [--user]\n\nAs before, the --user option is optional and when specified will install the module in your user space.\n\nYou can also perform a two stage installation that will allow you to modify the source code. The first step is to clone the repository::\n\n $ git clone https://github.com/archimede-institut/sage-euler-product\n\nThe above command creates a repository sage-euler-product with the source code, documentation and miscellaneous files. You can then change to the directory thus created and install the surface dynamics module with::\n\n $ cd sage-euler-product\n $ PIP install . [--user]\n\t\nDo not forget the . that refers to the current directory.\n\nWhen you don't want to install the package or you are testing some modifications to the source code, a more convenient way of using **sage-euler-prodct** is to do everything locally. To do so, you need to compile the module in place via::\n\n\t$ PYTHON setup.py build_ext --inplace\n\t\nOnce done, you can import the sage-euler-product module. To check that you are actually using the right module (i.e. the local one) you can do in a SageMath session::\n\n\tsage: import euler_product\n\tsage: euler_product.__path__ # random\n\t['/home/you/sage-euler-product/euler_product/']\n\nThe result of the command must correspond to the path of the repository created by the command git clone given above. The compilation step PYTHON setup.py build_ext has to be redone each time you modify a C or Cython source file (i.e. with .c, .h, .pxd or .pyx extension). In other words, it is not needed if you only modify or create Python files (i.e. .py files).\n\nIf you wish to install your custom version of sage-euler-product just use PIP as indicated before.\n\nDocumentation\n\ncomplete module documentation: https://archimede-institut.github.io/sage-euler-product/\nCheck\nAfter installing **sage-euler-product**, check that it works by launching Sage and typing the following commands. You should get the same output as below. ::\n\n\tsage: from euler_product.all import *\n\tsage: from euler_product.lattice_invariant_euler_produ import get_euler_products\n\tsage: get_euler_products(3, 1, 1-x^2,1, 100)\n\tComputing the structural invariants ... done.\n\tWe have Delta = 2 and beta = 2\n\tWe use big_m = 310 , big_p = 300 and working prec = 653 .\n\tComputing the finite products for p < 300 ... done.\n\tComputing C_A(K, m, F/H) ... -------------------\n\tFor p+3ZZ in frozenset({1})\n\tFor F(x) = -x^2 + 1\n\tand H(x) = 1\n\tthe product of F(1/p)/H(1/p) is between\n\t0.9671040753637981066150556834173635260473412207450092130719978569438733967843271277395717230016746853806050215621235810749643636399725665325875376146914709362753787689855429317947529895445140974344\n\tand\n\t0.9671040753637981066150556834173635260473412207450092130719978569438733967843271277395717230016746853806050215621235810749643636399725665325875376146914709362753787689855429317947529895445140974475\n\t(Obtained: 193 correct decimal digits)\n\t-------------------\n\tFor p+3ZZ in frozenset({2})\n\tFor F(x) = -x^2 + 1\n\tand H(x) = 1\n\tthe product of F(1/p)/H(1/p) is between\n\t0.7071813747951674302088659938984504109243584468119496848353517677901518159831128643782536704398941052120208041311403202957250160794697319584608281454011743387515885835706146696365506658500107821107\n\tand\n\t0.7071813747951674302088659938984504109243584468119496848353517677901518159831128643782536704398941052120208041311403202957250160794697319584608281454011743387515885835706146696365506658500107821228\n\t(Obtained: 193 correct decimal digits)\n\tTime taken: 1.920718120993115 seconds.\n\t((frozenset({1}), frozenset({2})),\n\t ((0.9671040753637981066150556834173635260473412207450092130719978569438733967843271277395717230016746853806050215621235810749643636399725665325875376146914709362753787689855429317947529895445140974344,\n\t 0.9671040753637981066150556834173635260473412207450092130719978569438733967843271277395717230016746853806050215621235810749643636399725665325875376146914709362753787689855429317947529895445140974475),\n\t (0.7071813747951674302088659938984504109243584468119496848353517677901518159831128643782536704398941052120208041311403202957250160794697319584608281454011743387515885835706146696365506658500107821107,\n\t 0.7071813747951674302088659938984504109243584468119496848353517677901518159831128643782536704398941052120208041311403202957250160794697319584608281454011743387515885835706146696365506658500107821228)))\n\n\n\n\n\n\nhttps://github.com/archimede-institut/sage-euler-product\nAssuming you have the program git on your computer, you can install the development version with the command::\n\n\t$ sage -pip install git+https://github.com/archimede-institut/sage-euler-product [--user]\n\n\n\n\n\nAuthors\nOlivier Ramar\\'e: see https://ramare-olivier.github.io/Maths/mcom3630.pdf for complete Mathematical references\nDominique Benielli: maintainerDeveloppement Cell, Institut Archim\u00e8de Aix-Marseille Universit\u00e9\n\n\nHow to cite this project\nIf you have used this project for please cite us as described on our zenodo site.\n\nVersions\nThe first release of sage-euler-product will appear soon as a sagemath spkg.\n\n. \n",
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