Winona State University will host “In the Shadow of Desargues” with Annalisa Crannell, professor of mathematics at Franklin & Marshall College, from 11 a.m. to noon Tuesday, Oct. 9, in room 120 of the Science Laboratory Center.

Crannell will discuss projective geometry as a tool to illuminate the workings of perspective artists. The talk will focus on Desargues’ triangle theorem. A pencil, eraser and straightedge are recommended for participation.

Crannell primarily researches topological dynamical systems, also known as “Chaos Theory.” She is also active in developing materials on Projective Geometry applied to Perspective Art. Crannell received the Mathematical Association of America’s most prestigious teaching award, the Deborah and Franklin Tepper Haimo Award, in 2008.

Refreshments will be served.

This event is free and open to the public.

For more information call Joyati Debnath at 507-457-5876 or email