Install libec3 by entering the following commands in the terminal:
sudo apt update sudo apt install libec3
Description:
Library for modular symbols and elliptic curves over Q
This library implements 2-descent on elliptic curves over Q and computations with modular symbols. . It is the library which powers the eclib-tools, which are used for the elliptic curve database.
Homepage: https://github.com/JohnCremona/eclib/
Version: 20171002-1build1
Section: universe/libs