[Facil] Sage, logiciel libre de mathématiques

[Fabian Rodriguez]

Tiens, je n'avais pas remarqué ce logiciel de maths dans les récents 
Trophées du libre.

Free software brings affordability, transparency to mathematics
http://uwnews.washington.edu/ni/article.asp?articleID=38459

Un extrait:
""For about 10 years I had been really unhappy with the state of 
mathematical software," Stein said. The big commercial programs -- 
Matlab, Maple, Mathematica and Magma -- charge license fees. The 
Mathematica Web page, for example, charges $2,495 for a regular license. 
For another program, a collaborator in Colombia was quoted about $550, a 
special "Third World" discount price, to buy a license to use a 
particular tool, Stein said."

Voir:
http://www.sagemath.org/

Et non, il n'y a pas encore de package poru Debian / Ubuntu ;)
voir:
http://wiki.sagemath.org/DebianSAGE