hi,

Months ago, I started to write a math app using GTK+, I finally changed my mind and ported it to Qt4.

But the point is not in the GUI part which works flawlessly but in the core: I have already a few interesting things but it's not enough, I think.

Here is what I implemented :
- solvation of linear equations' systems using GAUSS method
- prime number checking

Graphing equation is planned but I'm really busy...

Any things you would like to find in such an app?