Install libec-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libec-dev
Description:
Library for modular symbols and elliptic curves over Q (development)
This library implements 2-descent on elliptic curves over Q and computations with modular symbols. . This package contains the development files for the library.
Homepage: https://github.com/JohnCremona/eclib/
Version: 20171002-1build1
Section: universe/libdevel