If I did something wrong in the crediting of your work then let me now or just fix it.
Graphic software 
I've seen that you contributed the following image. I need to create similar ones for my thesis. Do you know a programm to create these spherical images? Can you give me a tip/hint? http://commons.wikimedia.org/wiki/File:RechtwKugeldreieck-3.svg
|File:Maurin Quina.svg has been listed at Commons:Deletion requests so that the community can discuss whether it should be kept or not. We would appreciate it if you could go to voice your opinion about this at its entry.
If you created this file, please note that the fact that it has been proposed for deletion does not necessarily mean that we do not value your kind contribution. It simply means that one person believes that there is some specific problem with it, such as a copyright issue.
I see that you are an author of File:Circle_area_by_reassembly.svg. I am wondering if you might can fix it. Each 'pizza slice' needs to be raised as to not have the cord on the x-axis. In other words, the yellow parts of the slices are to low. Reddwarf2956 (talk) 12:20, 30 January 2013 (UTC)