We owe the T-shirt design and our 2007 contest logo to
Schlichting of LSU Math Department.
It portrays the blow-up of the xy-plane A2
and of a curve C at the point P. The process of blowing-up
is used in mathematics to resolve singularities.
For a more detailed description of the picture and its
mathematical meaning please see the following article
by professor Marco Schlichting:
of Singularities and Blow-ups
You can also find more information on the following Wikipedia