I am a user and a developer of Sage since 2008. I am one of the main developer of the sage/combinat/words library. My contributions also concern visualisation, graphics and other things. I wrote dozens of posts about Sage on my blog (some in French, some in English).

Sage Development

On the Sage Trac, one can see the Sage tickets I worked on

My contributions to Sage

Below are the files I am listed as an author. Of course, my contributions go beyond these files:


My Optional Sage package: slabbe

Part of my own research code is available since August 2014 as an optional Sage package called slabbe. I try to release one new version every year. It is available in the Python Package Index. The source code is available on github. I wrote some blog posts about it in the categorie slabbe-spkg with examples and pictures.


sage -pip install slabbe


sage: from slabbe import *

Why: I explained in a blog post why I created this package. The short answer is that it allows me to easily use and share my research code. I always keep it documented and aim at keeping 100% doctest coverage with all test passing so that I trust experimental results I get from it. Including a new module into Sage is hard and in many cases, the module stays on trac forever without getting a positive review. My package allows to develop new modules with the long-term goal of getting into Sage and the short and mid-term goal of being easily usable and modified (allowing backward incompatible changes). If you want any of the module in the package to get into Sage and you are willing to review it, tell me.

What: It contains modules on digital geometry, combinatorics and combinatorics on words and more. Version 0.2, available since November 2015, provides modules on multidimensional continued fraction algorithms, matrix cocycles, languages, tikzpictures for which many examples of usage can be found in these cheat sheets.

Old versions are available below with pdf documentation.

spkg Documentation Release date Dependencies Release notes
slabbe-0.1.spkg slabbe-0.1.pdf August 27, 2014 sage-6.3 blog post
slabbe-0.1.1.spkg   June 3, 2015 sage-6.7 fixing gcd import
slabbe-0.2.spkg slabbe-0.2.pdf Nov 25, 2015 sage-6.8 blog post
slabbe-0.3b1   June 12, 2016 sage-7.2  
slabbe-0.3b2   Dec 11, 2016 sage-7.4  
slabbe-0.4 slabbe-0.4.pdf Jan 20, 2018 sage-8.1  

Organisation de conférences et activités

I participated in the organisation of the following events:

Sage Talks

Note that *.sws and *.txt files listed below can be uploaded directly from the Sage Notebook.