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I develop free and open source mathematical software. Donations are welcome as a sign of support and will also help pay for expenses such as website hosting, domain names, hardware and occasional travel that I otherwise cover out of my own pocket.

Current sponsors 1

@AndrewVSutherland
Past sponsors 3
@kimwalisch
@dginev
@PeterLuschny

Featured work

  1. fredrik-johansson/fungrim

    Fungrim: the Mathematical Functions Grimoire

    Python 119
  2. fredrik-johansson/flint

    My copy of FLINT -- please use https://github.com/flintlib/flint/ for development

    C 82
  3. fredrik-johansson/midi

    🎵 Open source MIDI music 🎵

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