Ask HN: Which eBook reader do you use for programming and math pdf?

I'm on Linux and use Evince document viewer [0] for pdfs. It has annotation and bookmark support.

[0] https://wiki.gnome.org/Apps/Evince

I use Okular[0] on Linux, but it's available for Windows too. It has all sort of annotation tools.

[0] https://okular.kde.org/

Paper books. If not possible then I suffer with an iPad.

I refuse to use a Kindle for tech books (though its outstanding for novels).

I'm on kindle DX