topology

The last time UC Davis saw me was when graduated in the summer of 2018 with a Ph.D. in Mathematics. My dissertation was in low-dimensional topology under Abby Thompson, focusing on Heegaard splittings of knot complements in the 3-sphere (with additional mentorship of Javier Arsuaga in the application of knot theory to molecular biology, particularly the folding of chromosomes in yeast). Only a few months prior to that, I had accepted an offer to join the faculty at University of the Pacific (UOP) in Stockton, CA, as a tenure-track assistant professor of applied mathematics.

Melissa Zhang is a low-dimensional topologist who likes to use algebraic, combinatorial, and categorical methods to solve problems. Her favorite topological objects are knots and surfaces smoothly embedded in 3- and 4-dimensional spaces.

She received her Ph.D. from Boston College under the supervision of Eli Grigsby and David Treumann. She was previously a postdoc at the University of Georgia, SLMath/MSRI, and UC Davis (and is now a super-postdoc, as she never left).

Our colleague Washek Pfeffer passed away on January 3, 2021, he was 84. Born in Prague as Václav Franticek Pfeffer on November 14, 1936, he changed his name to Washek Pfeffer when he became a US citizen in 1970. He joined the UC Davis Department of Mathematics in 1966, retiring in 1994.

One of Washek’s middle school classmates later rose to prominence, Václav Havel, the famous playwright and President of Czechoslovakia (1989-1992) and of the Czech Republic (1993-2003). Washek and Václav became close friends in the 1950s.