= Hans Petter Langtangen
{c}
{wiki}
<GitHub> account: https://github.com/hplgit
It should be mentioned that when you start <Googling> for <partial differential equation>[PDE] stuff, you will reach Han's writings a lot under his <GitHub Pages>: http://hplgit.github.io/[], and he is one of the main authors of the <FEniCS Project>.
Unfortunately he died of <cancer> in 2016, shame, he seemed like a good educator.
He also published to <GitHub> pages with his own crazy <markdown>-like multi-output <markup language>: https://github.com/hplgit/doconce[].
Rest in peace, Hans.