Mathematical Biology Seminars | Department of Mathematics

The Mathematical Biology Seminar attempts to bring together those interested in applying mathematical techniques to important biological problems. The seminar will be comprised of talks by students and faculty in mathematics as well as from several ecological and biological departments from across the Oregon State University campus. Talks revolve around the mathematics of infectious diseases, deterministic and stochastic models of population dynamics, spatial ecology, and genomics, among others.

See below for upcoming seminars or access the seminar archive

Organizer

Swati Patel

Meeting time

Tuesdays at 3 pm in location KIDDER 238

Mailing lists

Attendees are encouraged to join the student mailing list and faculty mailing list.

A complete conjugacy invariant for generalized pseudo-Anosov homeomorphisms via symbolic dynamics and combinatorics

Monday, April 20, 2026 – 11:00 am

Zoom: Please email Philipp Kunde for the zoom link.

Speaker: Inti Cruz

In this seminar we review the notion of Markov partitions for generalized pseudo-Anosov homeomorphisms (\gpA) and show how, through the associated incidence matrix, one can construct a subshift of finite type (SFT) that is semiconjugate to the corresponding pseudo-Anosov homeomorphism.We then introduce geometric Markov partitions and the notion of geometric type, a combinatorial object that extends the information contained in the incidence matrix. We discuss how this geometric type allows for a refined combinatorial analysis of the associated SFT, leading to our main result: two \gp-Anosov homeomorphisms admit geometric partitions of the same geometric type if and only if they are topologically conjugate via an orientation-preserving homeomorphism. Read more.