Algebraic Dynamics Seminar at Harvard

We meet in Room 232 of the Science Center, usually on Thursdays at 4pm. Seminars are typically two hours long, with a break in the middle and the second hour for more details. Please email me (Laura DeMarco) if you are interested in joining the email list, so I can send you announcements (and Zoom links if the talk is remote). The math department is locked, so let me know if you are not from Harvard but would like to attend a lecture.

Next talk:

Tuesday, December 6, 3-5pm in Room 530

Jit Wu Yap (Harvard)

Distribution of n-cycles of polynomials over finite fields Abstract: Let d,n be positive integers. Given a polynomial f of degree d over a finite field Fq, one can view it as a discrete dynamical system on the points of Fq. A natural question to ask if how many n-cycles does a random such f have. We show that if one fixes d,n then as q goes to infinity, the distribution of n-cycles converges to a natural limiting distribution. A key input in our proof is a theorem regarding the Galois group of periodic points. In the second half, I will try to explain how to prove this using the geometry of the Mandelbrot set. This is joint work with Michael Kural.

Fall 2022 schedule

September 15. Kathryn Lindsey, Boston College
September 22. Alex Kapiamba, University of Michigan
October 13. Philip Engel, University of Georgia
October 27. Becca Winarski, College of the Holy Cross
November 3. Max Weinreich, Harvard
November 17. Rafael Saavedra, Harvard
December 6 (Tuesday), 3-5pm. Jit Wu Yap, Harvard

Past talks