Luis Caffarelli and Douglas Arnold are the speakers in, respectively, the thirteenth annual

*Baylor Lecture Series in Mathematics* and the twelfth annual

*Baylor Undergraduate Lecture Series in Mathematics*; both will speak this fall on campus. Professors Caffarelli and Arnold are internationally recognized for their fundamental research in mathematics.
Professor Caffarelli, the Sid Richardson Foundation Regents Chair in Mathematics at the University of Texas in Austin and a member of the National Academy of Sciences, will visit Baylor University on October 17-18. Professor Arnold, the McKnight Presidential Professor of Mathematics at the University of Minnesota, visits Baylor on December 5-6. Each will give two lectures on campus; their public lectures (October 18 and December 5) are suitable for faculty, students, and the general public. Dr. Caffarelli's public lecture, on October 18, is entitled

*Diffusion-Type Equations: From the Heat Equation to Long Distance Interactions*. Dr. Arnold's public lecture (December 5) is entitled

*Computational Mathematics Simulating The World*.
Professor Caffarelli, who was born and raised in Buenos Aires, earned his Ph.D. in 1972 from the University of Buenos Aires. He is one of the world's leading experts in the subject of partial differential equations. Prior to his appointment at the University of Texas, Dr. Caffarelli had appointments at the University of Minnesota, the University of Chicago, the Courant Institute of Mathematical Sciences at New York University, and the Institute of Advanced Study in Princeton.

**Professor Luis Caffarelli**

For further information on Professor Caffarelli and his lectures, please visit the Baylor Lecture Series in Mathematics web site.
Professor Arnold is a leading expert in the world on the finite element method and, in particular, the finite element exterior calculus. He earned his Ph.D. in mathematics from the University of Chicago in 1979. He then moved to the University of Maryland and, in 1989, he accepted a position at Penn State University where he occupied a chair until 2002. From there, he moved to Minnesota and became Director of the Institute for Mathematics and its Applications. Dr. Arnold also served as President of the Society for Industrial and Applied Mathematics in 2009-2010.

**Professor Doug Arnold**
Further information on Dr. Arnold and his lectures can be found at the Baylor Undergraduate Lecture Series in Mathematics web site.