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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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Have him in circles
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Raphaël Pinson

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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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Have him in circles
428 people
Nsuhoreidem Frank (Don Peterson)'s profile photo
Sébastien Picq's profile photo
martin haesler's profile photo
Michael Kohler's profile photo
Arkadiusz Zielazny's profile photo
John Lenton's profile photo
madeleine nogaye pouye's profile photo
P M SOMAN's profile photo
Magnus Bjerke Vik's profile photo
Work
Occupation
Open-Source Technologist
Employment
  • Camptocamp SA
    Systems Engineer, 2012 - present
  • Alten
    Systems Engineer, 2010 - 2012
  • Orness
    Systems Engineer, 2006 - 2010
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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 - 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 - 3 months ago
reviewed 3 months ago
Très bonne pizzas et un magret de canard excellent.
Public - 5 years ago
reviewed 5 years ago
Les meilleurs burgers de Sophia.
Public - 5 years ago
reviewed 5 years ago
8 reviews
Map
Map
Map
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 - 5 months ago
reviewed 5 months ago
A unique place in Paris. Must see.
Public - 5 years ago
reviewed 5 years ago