Eigen 3.4.0, released in August 2021, remains a critical version of this C++ template library for linear algebra. It is widely used for its high-performance handling of matrices, vectors, and numerical solvers. Where to Download Eigen 3.4.0
The primary source for downloading Eigen 3.4.0 is the official GitLab repository . 3.4.0 · libeigen / eigen - GitLab 3.4. 0 · libeigen / eigen · GitLab. about.gitlab.com Eigen: A C++ template library for linear algebra