# eclib: Enumerating and computing with elliptic curves defined over the rational numbers¶

## Description¶

John Cremona’s programs for enumerating and computing with elliptic curves defined over the rational numbers.

mwrank is a program written in C++ for computing Mordell-Weil groups of elliptic curves over Q via 2-descent. It is available as source code in the eclib package, which may be distributed under the GNU General Public License, version 2, or any later version.

mwrank is now only distributed as part of eclib. eclib is also included in Sage, and for most potential users the easiest way to run mwrank is to install Sage (which also of course gives you much much more). I no longer provide a source code distribution of mwrank by itself: use eclib instead.

• PARI

• NTL

• FLINT

standard

## Version Information¶

package-version.txt:

20190909


## Equivalent System Packages¶

arch:

$sudo pacman -S eclib  conda: $ conda install eclib


Debian/Ubuntu:

$sudo apt-get install eclib  Fedora/Redhat/CentOS: $ sudo yum install  eclib


freebsd:

$sudo pkg install eclib  gentoo: $ sudo emerge eclib


nix:

\$ nix-env --install eclib


If the system package is installed, ./configure will check whether it can be used.