Mathematics

September 2022

Associate Professor Christian Benes is our new undergraduate deputy chair, taking over the role from Associate Professor Murray Hochberg. We are grateful to Professor Hochberg for his years of service in this role.

Assistant Professor Diana Hubbard published a peer-reviewed paper: "On the Upsilon invariant of fibered knots and right-veering open books," by Dongtai He, Diana Hubbard, and Linh Truong, in Mathematical Research Letters 29(2), 421–444 (2022).

Summer 2022

Assistant Professor Heidi Goodson was awarded a National Science Foundation Grant entitled "Sato-Tate Distributions of Jacobian Varieties." The grant, in the amount of $255,423, will support her research for three years (August 2022–July 2025).

Professor Jun Hu published a peer-reviewed paper, "Conformally natural extensions of vector fields and applications," with Jinhua Fan, in Pure and Applied Math Quarterly 18(3), 1147–1186, 2022.

Assistant Professor Diana Hubbard published a peer-reviewed paper, "Examples of non-minimal open books with high fractional Dehn twist coefficient," with Peter Feller, in New York Journal of Mathematics, vol. 28, 2022.

Professor Stephen Preston presented his research at the Small Scale Dynamics in Fluid Motion Workshop at the Simons Center in Stony Brook, New York, and at the Math on Long Island Conference in Denmark. A video of this presentation, entitled “Conjugate point criteria in 2D hydrodynamics,” is available online.

We are pleased to announce that two new full-time lecturers have joined the Math Department:

• Mark Gibson-Cardinali received his M.A. and M.Phil. in mathematics from the CUNY Graduate Center. He has taught for Brooklyn College for 10 years under fellowships, adjunct teaching, and substitute positions. He is excited to continue his work with our students under his new lecturer title.
• Liem Nguyen received her Ph.D. in mathematics at Louisiana State University in 2021. Prior to joining Brooklyn College, she was a visiting assistant professor at Haverford College.

May 2022

Assistant Professor Heidi Goodson was an invited speaker at the DIAMANT Symposuim in Utrecht, The Netherlands. She presented her research in a talk entitled "Sato-Tate Groups in Dimension Greater than 3"

Congratulations to Assistant Professor Diana Hubbard who was awarded a 2022 Claire Tow '52 Award for Excellence in Teaching. This annual award is given to five Brooklyn College faculty members in recognition of their demonstrated excellence in teaching-related activities.

Professor Jun Hu published a peer-reviewed paper this month: "Cubic rational maps with escaping critical points, Part I: Julia set dichotomy in the case of an attracting fixed point" with Arkady, Etkin, Hu. Qual. Theory Dyn. Syst. 21, 70 (2022). https://doi.org/10.1007/s12346-022-00593-y

Professor Jun Hu was awarded a PSC-CUNY grant entitled "Regularity in parameter space for one-parameter family of cubic rational maps, and more on Douady-Earle extension of circle homeomorphism with one-point differentiability" for the academic year 2022-2023. Congratulations!

April 2022

Associate Professor Christian Benes was awarded a PSC-CUNY grant entitled "Moderate and Large Deviations for d-Dimensional Simple Random Walk" for the academic year 2022-2023. Congratulations!

Assistant Professor Heidi Goodson was awarded a PSC-CUNY grant entitled "Twisting Sato-Tate groups" for the academic year 2022-2023. Congratulations!

Congratulations to Assistant Professor Diana Hubbard who was recently awarded two grants.

• National Science Foundation grant entitled "LEAPS-MPS: Braids and Mapping Class Groups: Investigating Left-orders, Twisting, and Positivity". The grant, in the amount of $122,662, will support her research for two years (July 2022 - June 2024).
• PSC-CUNY grant entitled "Left-orders and twisting: from braids to mapping class groups" for the academic year 2022-2023.

March 2022

Assistant Professor Heidi Goodson is a Visiting Scientist at the Max Planck Institute for Mathematics in Bonn, Germany. Her visit will span the months of March and April of the spring 2022 semester and her research project is titled "Sato-Tate Distributions of Jacobian Varieties."

Professor Jun Hu published a peer-reviewed paper: Jun Hu and Francisco G. Jimenez-Lopez on Teichmuller spaces of nondiscrete groups has appeared in Annales Fennici Mathematici 47(1): 381-393, 2022 (Doi: 10.54330/afm.114460).

Associate Professor Sandra Kingan published a review of the book "Mind and Matter: A Life in Math and Football," by John Urschel and Louisa Thomas in the March-April AWM newsletter. (AWM Newsletter 13, Volume 52, Number 2 March–April 2022, page 12-14.)

The Mathematics Department together with the Math Club is hosting a Pi Day celebration *in person* on March 15 from 1:15-2:15 p.m in 1310 Ingersoll Hall. The event will feature a short presentation by Assistant Professor Diana Hubbard, an integration bee, a "pi-ku" writing contest (https://www.npr.org/sections/thetwo-way/2010/03/pi_day.html), prizes galore, and free pizza and dessert pie. Please join us!

February 2022

Senior mathematics major Avraham Radin participated in the 82nd William Lowell Putnam Competition -- the pre-eminent mathematics competition for undergraduates in the United States and Canada. Avraham was one of 2,975 participants and he scored above the median. Congratulations!

Professor Stephen Preston published a peer-reviewed paper this month: Preston, S.C. Solar models and McKean’s breakdown theorem for the 𝜇CH and 𝜇DP equations. Mathematische Annalen (2022).

January

Associate Professor Diogo Pinheiro recently published a peer-reviewed article - "Refinement of Dynamic Equilibrium using Small Random Perturbations." (with (A. Araujo, W. Maldonado, D. Pinheiro, A.A. Pinto, M. Choubdar Soltanahmadi). International Journal of Economic Theory, 17 (2021) 258-283.

The Mathematics Department Prize Exams will be in-person again this semester after a one-year hiatus. The exam will take place on February 25, 10 a.m.-1 p.m., in Ingersoll 1146. Please sign up by the end of Friday, February 18. More details here.