Special Lectures 

L. C. Evans
On March 29, 2000, Professor L. C. Evans of UC-Berkeley gave the Fifth Wolfgang Wasow Memorial Lecture on ``Effective Hamiltonians.'' In his lecture Professor Evans explained some recent work with D. Gomes concerning PDE methods for Hamiltonian dynamics. As he described it, the main point is that there exist weak solutions of a certain PDE and these solutions lead to a sort of integrable structure for certain trajectories. Following the lecture there was a reception in the 9th floor lounge of Van Vleck Hall.

Previous Wasow Lecturers have been Jürgen Moser, Joseph Keller, Louis Nirenberg, and Cathleen Morawetz. The Sixth Memorial Lecture will be given by Professor Emeritus Peter Lax of the Courant Institute of NYU in early fall of 2001.

There will be two Distinguished Lecturers this spring: Terence Tao of UCLA in April and C. Vafa of Harvard University in May.

Alan Edelman
Professor Alan Edelman of MIT gave the Fifth Annual LAA Lecture on March 22, 2000. The title of his lecture was ``Why are eigenvalues of random matrices cool?'' In 1998 Professor Edelman (jointly with Eric Kostlan) was awarded the MAA Chauvenet Prize for the paper: "How many zeros of a random polynomial are real?" Bulletin of the American Mathematical Society, 32 (1995), 1-37. In his paper ``The Mathematics of the Pentium Flaw'' in the March 1997 issue of SIAM Review, he gives a detailed description of what went wrong with the pentium chip. A reception in the 9th floor lounge of Van Vleck Hall followed the lecture.

Previous LAA Lectures have been Chandler Davis, Victor Klee, Ludwig Elsner, and Gene Golub. The Sixth LAA Lecture will be given by Professor William Fulton of the University of Michigan on April 27, 2001.

Persi Diaconis
Professor Persi Diaconis of Stanford University was the Spring 2000 Distinguished Lecturer. He visited the Mathematics Department during the week of April 3, 2000 and gave three lecturers. The first lecture was in the Probability Seminar on ``Random Walks & Hecke Algebras.'' The second lecture was aimed at graduate students and undergraduates and was titled ``The Mathematics of Shuffling Cards,'' and was given to a full house in B-239 Van Vleck. Both students and faculty alike marveled not only at the beautiful mathematics involved but also at Professor Diaconis's manual dexterity with cards. The third lecture was part of our colloquium series and was on ``Zeros of the Zeta Function and Eigenvalues of Random Matrices.''

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