Real Enumerative Geometry and Solving Systems of Equations A short course of four lectures Frank Sottile University of Wisconsin-Madison and IRMA Finding the isolated real solutions to a system of real polynomial equations is a challenging, yet important problem with real world applications. Effective techniques exist for this problem, and their improvement and implementation are currently areas of active research. Also of interest are upper bounds on the number of real solutions. In many geometric situations, the sharp bound is the number of complex solutions. This series of four lectures will discuss this problem from a geometric perspective, and include a number of open questions. Schedule of Talks: 26 mai 1999: Real Systems Solving 2 juin 1999: Sparse Systems of Equations 9 juin 1999: Real enumerative geometry 16 juin 1999: Real Schubert Calculus