passagemath-eclib 10.8.5rc1

passagemath: Elliptic curves over the rationals with eclib/mwrank

passagemath is open source mathematical software in Python, released under the GNU General Public Licence GPLv2+.

It is a fork of SageMath, which has been developed 2005-2026 under the motto “Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, and MATLAB”.

The passagemath fork uses the motto “Creating a Free Passage Between the Scientific Python Ecosystem and Mathematical Software Communities.” It was created in October 2024 with the following goals:

• providing modularized installation with pip from binary wheels, - this major project was started in May 2020 in the Sage codebase and completed in passagemath 10.5.29 (May 2025),

• establishing first-class membership in the scientific Python ecosystem,

• giving clear attribution of upstream projects,

• providing independently usable Python interfaces to upstream libraries,

• offering platform portability and integration testing services to upstream projects,

• inviting collaborations with upstream projects,

• building a professional, respectful, inclusive community,

• empowering Sage users to participate in the scientific Python ecosystem by publishing packages,

• developing a port to WebAssembly (Pyodide, emscripten-forge) for serverless deployment with Javascript,

• developing a native Windows port - passagemath 10.6.1 (July 2025) published the first pip-installable wheel packages for native Windows on x86_64, - passagemath packages became available in the [MSYS2 software distribution](https://packages.msys2.org/search?t=pkg&q=passagemath) in November 2025.

Moreover, the passagemath project:

• provides a stable, frequently updated version of the Sage distribution,

• integrates additional mathematical software, notably Macaulay2, a full set of GAP packages, and the Combinatorial Matrix Recognition library,

• curates a library of Sage user packages.

Full documentation is available online.

passagemath attempts to support and provides binary wheels suitable for all major Linux distributions and recent versions of macOS.

Binary wheels for native Windows (x86_64, ARM) are are available for a subset of the passagemath distributions. Use of the full functionality of passagemath on Windows currently requires the use of Windows Subsystem for Linux (WSL) or virtualization.

The supported Python versions in the passagemath-10.8.x series are 3.11.x-3.14.x; the passagemath-10.6.x series (EOL 2026-10) still supports Python 3.10.x.

About this pip-installable distribution package

This pip-installable distribution passagemath-eclib provides the Cython interface to John Cremona’s programs for enumerating and computing with elliptic curves defined over the rational numbers.

What is included

• Sage interface to Cremona’s eclib library (also known as mwrank)

• Cython interface to Cremona’s eclib library (also known as mwrank)

• Cremona matrices

• Modular symbols using eclib newforms

• Cremona modular symbols

• Cremona modular symbols (constructor)

• Interface to the mwrank program

Examples

A quick way to try it out interactively:

$ pipx run --pip-args="--prefer-binary" --spec "passagemath-eclib[test]" ipython

In [1]: from passagemath_eclib import *

In [2]: M = CremonaModularSymbols(43, cuspidal=True); M
Out[2]: Cremona Cuspidal Modular Symbols space of dimension 6 for Gamma_0(43) of weight 2 with sign 0

Finding the installation location of the mwrank program:

$ pipx run --pip-args="--prefer-binary" --spec "passagemath-eclib" python
>>> from sage.features.eclib import Mwrank
>>> Mwrank().absolute_filename()
'.../bin/mwrank'

Use with sage.schemes.elliptic_curves:

$ pipx run --pip-args="--prefer-binary" --spec "passagemath-eclib[test]" ipython

In [1]: from passagemath_eclib import *

In [2]: x = polygen(ZZ, 'x')

In [3]: K = NumberField(x**2 + 23, 'a'); a = K.gen()

In [4]: E = EllipticCurve(K, [0,0,0,101,0])

In [5]: E.gens()

Development

$ git clone --origin passagemath https://github.com/passagemath/passagemath.git
$ cd passagemath
passagemath $ ./bootstrap
passagemath $ python3 -m venv eclib-venv
passagemath $ source eclib-venv/bin/activate
(eclib-venv) passagemath $ pip install -v -e pkgs/sagemath-eclib