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Raphaël Pinson
Works at Camptocamp SA
Attended ENSMA
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Raphaël Pinson

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augeasproviders 1.1.0 is out with a new Apache directive provider, PAM config entry provider, an augeasproviders::instances class, a performance boost on Puppet 3.4+ and more!

Thanks to +Raphaël Pinson, +Greg Swift and +Trey Dockendorf!

Check http://augeasproviders.com/documentation/changelog.html and download it from the Puppet Forge.
augeasproviders. Alternative Augeas-based providers for Puppet. Latest version: 1.1.0 (changelog). Download TAR Ball · View On GitHub · View On Forge · Home · Setup · Providers · Examples · Classes · Other docs. Changelog. Historic versions of augeasproviders can be downloaded from Puppet Forge.
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Yeah :)
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+Vladimir Bulatov does it again!  At each moment, this movie shows you a tiling of the hyperbolic plane by pentagons, four meeting at each corner, mapped onto a disc with four slits cut out.  This mapping is conformal, meaning that it preserves angles.  As time passes, the hyperbolic plane rotates and we see this crazy movie.

For a more detailed explanation, with tons of great pictures, go here: http://bulatov.org/math/1001/

Here's the short version: there's a way to measure distances on a disk that makes it into a model of the hyperbolic plane.  There are actually a number of ways, but Bulatov - and Escher - use the Poincare disk model, because in this model straight lines look like portions of circles: very pretty.  Then, according to the Riemann mapping theorem you can map this disk in a conformal way onto a disk with 4 slits cut out.  The hard part is finding a formula for how to do it, and then implementing it on a computer.

For more details, try these picture-packed pages:

http://en.wikipedia.org/wiki/Conformal_map
http://en.wikipedia.org/wiki/Poincar%C3%A9_disk_model

and this more advanced one:

http://en.wikipedia.org/wiki/Riemann_mapping_theorem

#sciencesunday
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Lugano Lake
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So Lenovo has decided to let go of their standard, simple round charging plugs...
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Vous avez des airs :)
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The Opus codec becomes an IETF standard [LWN.net] - http://ae7.st/s/2q
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Explanations of all the strange Debian package names you always wondered about: http://wiki.debian.org/WhyTheName
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Work
Occupation
Open-Source Technologist
Employment
  • Camptocamp SA
    Systems Engineer, 2012 - present
  • Alten
    Systems Engineer, 2010 - 2012
  • Orness
    Systems Engineer, 2006 - 2010
Basic Information
Gender
Male
Public - 3 months ago
reviewed 3 months ago
Bon travail sérieux. Les déménageurs ont su bien s'adapter aux conditions d'accès compliquées de l'appartement (2 A/R en 30m3 au lieu d'un en 50m3), et ont été efficaces. Le prix était également très concurrentiel.
Public - 10 months ago
reviewed 10 months ago
12 reviews
Map
Map
Map
Public - 3 months ago
reviewed 3 months ago
Un lieu de référence pour les ressources chrétiennes à Chambéry. On y trouve de bons livres et de bonnes Bibles, et l'équipe est toujours cordiale et prête à aider.
Public - 10 months ago
reviewed 10 months ago
Le livreur n'est pas passé (j'étais chez moi ce jour-là, 3 autres livreurs sont passés et ont effectivement sonné, pas celui de colis privé). Le colis a donc été envoyé en relais colis (adresse imposée, et sans mon accord) et j'attend encore qu'il y soit rendu disponible, 7 jours après la date normale de livraison. J'ai rarement vu un service de livraison aussi catastrophique.
Public - a year ago
reviewed a year ago