home.social

#quaternion — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #quaternion, aggregated by home.social.

  1. Prev boost of @jendrikillner has an article on Quaternion random walks which is really cool. Some comments:

    1) The random walk isn't the same as a classical method if the ordering of the drawn values is important. The angles between draws isn't uniformly distributed...it's fixed.
    2) For Marsaglia:
    a) can skip on trig by rejection method (2 uniform on disc) OR
    b) use a sincospi kernel (instead of full version given limited angle ranges)

    [1] mastodon.gamedev.place/@jendri

    #quaternion

  2. Our former Ukrainian Research Fellow, Ivan Kyrchei has just released a paper on #Quaternion #MatrixEquations.

    I.I. Kyrchei, D. Mosić, P. Stanimirović / Quaternion Two-Sided Matrix Equations with Specific Constraints / In: Mathematics Online First Collections. Springer, Cham.

    link.springer.com/chapter/10.1
    #generalizedinverse #linear #DeterminantalRepresentation

    @univienna #NASUkraine

    (for the video please visit twitter.com/ESIVienna/status/1)

  3. CW: Rosetta Code and ATS

    My latest addition to the #ATS repertoire of #RosettaCode -- an implementation of the #Quaternion type task --

    Quaternion type - Rosetta Code rosettacode.org/wiki/Quaternio

    Also related to ATS, I posted the #m4 output of vmc (which I wrote in ATS) to the #Mandelbrot set task:

    rosettacode.org/wiki/Mandelbro

    #ATSlang

  4. #GenerativeArt interlude

    #Quaternion #phaseplot of the day

    z² + (0.6130749993985906+0.7900247117099681i)/z

    Reminder: if you like what you see, you can get it as prints, stickers, T-shirts, etc. at holstege.redbubble.com/

  5. Today’s the Day You Finally Learn Quaternions - If you’ve ever dealt with orbital mechanics or sophisticated computer graphics, yo... - hackaday.com/2022/09/05/todays #orbitalmechanics #gimballock #quaternion #mischacks

  6. Juste pour faire mon intéressant, je vais suivre le #FOSDEM ce week-end avec #Quaternion et pas avec le client Web.

    Quaternion ne semble pas permettre de changer son avatar ?

    #Matrix

  7. @draco If my memory serves me correctly, I tried few #Matrix clients (#nheko, #Quaternion, #Revolt; possibly some others, but not #Element) some time ago and they suggested few servers.

  8. trying out #matrix. apparently #quaternion still doesn't support encryption (i'm using the current flatpak build)? didn't they used to mention this somewhere?

    there was a gsoc project last year which seemed to be successful, but maybe it's not integrated yet? matrix.org/blog/2019/09/20/qt-