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Math in the Valley Summer 2025

2023–25 Newsletter

A drone aerial photo of OSU and the surrounding mountains
headshot of Jon Kujawa smiling outside

Jonathan Kujawa received a Ph.D. in mathematics from the University of Oregon and a B.A. in mathematics from Gustavus Adolphus College. His research interests center around representation theory and Lie theory – particularly their connections to algebraic geometry, low-dimensional topology, and algebraic combinatorics – to understand the mathematics of symmetry.

From the Head

Greetings from Corvallis!

The past year has seen many changes. In the OSU math department, we experienced both the bittersweet moments of colleagues retiring and students graduating, as well as the excitement of welcoming new faculty and students.

As you’ve no doubt heard, it is a challenging time in the world of higher education and scientific research. When I find myself feeling glum about the news, I remember the advice of Fred Rogers: "Look for the helpers. You will always find people who are helping.”

Here in the department, faculty and students alike continue to find ways to invest in our collective future. This includes world-class research, innovative teaching, impactful undergraduate and graduate student mentoring, service to the broader community, and a commitment to making math open to all.

The newsletter offers a snapshot of the year’s highlights. Let me mention a few. In the fall, Nathaniel Whitaker shared his journey from the segregated elementary schools of Virginia to his career studying how fluids flow in the human body, underground, and in clouds of Jupiter at one of the most prestigious universities in the country. In the spring, Matthew Foreman visited from UC Irvine to give the Lonseth lecture on the mathematics of impossibility, and Rachel Ward visited from UT Austin and Microsoft Research to give the Milne lecture on the foundations of artificial intelligence.

We’re tremendously proud that Elise Lockwood was selected for a PECASE award --- the highest honor bestowed by the United States government on outstanding scientists in the early stages of their careers. Likewise, Axel Saenz Rodriguez was one of eight scientists selected by the Simons Foundation for its prestigious Pivot Fellowship. He will use it to bridge the gap between theory and experiment in the quantum realm. Victory Obieke was the featured artist in the Whispers of Home exhibit. When you visit the department, you can now see her paintings in the lounge. Department members continued their impactful work with the Corvallis Math Circles, Pacific Math Alliance, and Math For All conference series. Faculty and graduate students also traveled around the world to present their research.

After reading through this summer’s newsletter, explore our News and Events for even more mathematics news. You can find details about faculty accomplishments, student awards, research grants, scholarships, and ongoing activities that shape our community. It also serves as your go-to resource for current department news and updates. For example, there you will be able to learn about the new faculty and graduate students joining us this fall.

All of this is only possible thanks to the generosity of our many friends and alumni. Two of our incoming graduate students are supported by Ramanujan-Hardy fellowships. Last year an anonymous donor established the Tom Dick scholarship in recognition of his decades-long support of mathematics education faculty, students, and research at OSU. Most recently, the estate of alumnus George Barr created the George Earl Barr Endowed Professorship in Mathematics to recognize the impact of Oregon State on Dr. Barr’s life. The contributions we receive, large and small, are crucial to our ability to support students and faculty in all they do. We deeply appreciate your commitment to our shared values.

Jonathan Kujawa
Department Head, Mathematics
Hartmann Faculty Scholar

Faculty news, honors and awards

Our faculty have been hard at work over the last year with teaching, travel and mentoring. Read on to learn more about their efforts, recent tenure appointments, promotions, grants, awards and other honors.

Image: Elise Lockwood works with mathematics student Rebekah Kuss

Welcome new faculty!

We are pleased to welcome Assistant Professor Philipp Kunde who joins us from Jagiellonian University in Krakow, Poland; Professor of Practice Amin Hassan Zadeh, an adjunct professor of Statistical and Actuarial Sciences at Western University, Canada; and Instructor Serge Phanzu, who previously taught at Portland State University. We also welcome back Murat Kol, visiting professor from 2022-24 who joins us again as an instructor!

We are also joined by new postdoctoral researchers Jane Shaw MacDonald and Sergio Zamora.

Meet our new hires

Congratulations! Funding, awards and honors

Elise Lockwood has been honored with the Presidential Early Career Award for Scientists and Engineers (PECASE), the highest honor bestowed by the U.S. government to outstanding early-career scientists and engineers. This award recognizes Lockwood’s innovative research in mathematics education and her potential to advance the field.

Congratulations to Xueying Yu, who received several competitive professional awards in 2024. She visited AIM as part of a collaborative AIM SQuaRE group that will visit AIM one week every year during this three-year program. Xueying also visited IAS as part of the IAS Summer Collaborators Program that invites a group to visit IAS for two weeks during the summer. Last but not least, she received funding for travel expenses to SLMath.

Chad Giusti was featured in MAA FOCUS for his work applying topological data analysis to neuroscience and medicine, with support from the NSF, AFOSR, and AFRL.

Axel Saenz Rodriguez has been awarded the prestigious Simons Foundation Pivot Fellowship for his groundbreaking work at the intersection of probability theory and mathematical physics. The Simon Foundation Pivot Fellowship is a highly competitive award that supports early-career researchers seeking to pivot their research into new, impactful scientific areas. The fellowship provides recipients with resources and mentorship from leading experts to explore innovative directions in their research.

Axel also received funding from the American Institute of Mathematics (AIM) to organize a series of SQuaRE meetings — three one-week collaborators meetings across three years. These SQuaRE meetings include five additional professors from the United States, Taiwan and Brazil. The theme of his meeting was “KPZ fixed point beyond homogeneous models,” a combination of probability, analysis and mathematical physics.


Tenure and promotions

Chad Giusti was promoted to Associate Professor.

Stacy Vaughn was promoted to Senior Instructor I

Learn more about these well deserved promotions

Fond farewells

Happy retirement from the Math Department to some of our long standing faculty members: Scott Peterson, who joined OSU faculty in 2000, Adel Faridani and Bill Bogley, who joined OSU faculty in 1990, Tevian Dray, who joined OSU faculty in 1988, Enrique Thomann, who joined OSU faculty in 1987, and Robert Higdon, who joined our faculty in 1982. These outstanding mathematicians have earned a much deserved retirement!


Remembering our colleagues – In memoriam

With heavy hearts, we share the passing of beloved mathematics community members Juha Pohjanpelto, Bea Michalik and Dave Carlson. Their contributions to mathematics and to the department will not be forgotten.

Teaching at the Building Bridges Graduate Summer School

Holly Swisher co-taught a minicourse on "Mock modular forms and quantum modular forms with applications" as part of the Building Bridges 6 Graduate Summer School at Centre International de Rencontres Mathématiques (CIRM) outside Marseille, France this summer. The Building Bridges summer schools and workshops in automorphic forms and related topics are meant to bring researchers from the EU and US together.

Empowering student success

Mary Beisiegel is collaborating on a NSF-funded project to prepare mathematics graduate teaching assistants (MGTAs) to implement teaching practices designed to improve the success of students in undergraduate mathematics courses. The project will provide MGTAs with a multi-year professional development program to help them implement evidence-based teaching practices, including active learning. Learn more about this effort.

Axel Saenz Rodriguez and graduate student Nikolaus Elsaesser mentored three undergraduate students —Christie Chang, Crystal Lee, and Mason Spears — as part of OSU’s URSA Engage program during the 2023-24 academic year. The students worked on simulations for 1D quantum systems modeling the quantum spin interaction of electrons, developing and implementing code on OSU’s high performance computing cluster. A preprint is currently in preparation. The project has successfully verified conjectural formulas that diagonalize the non-linear Hamiltonian operator which dictate the dynamics of the system.

Mathematics undergraduates and alumni find success at Oregon State and beyond

Alumni join the Pacific Math Alliance webinar

Thank you to Mathematics graduate alums Ricardo Grimaldo (now Ph.D. student at OSU Integrative Biology), Sooie-Hoe Loke (now Associate Professor at Central Washington University), and F. Patricia Medina (now Assistant Professor at NYC College of Technology) who served as panelists for the 2024 Pacific Math Alliance webinar on Careers in Mathematics. The webinar attracted over 150 registered participants from the Pacific region of the US and beyond and featured a discussion of potential careers in mathematical biology, financial and actuarial paths, and data science. Thank you Ricardo, Sooie-Hoe and Patricia for paying it forward!

Mathematics alumnus Scott Clark built a $30M AI startup

Scott Clark wants artificial intelligence to be powerful — and trustworthy. Clark’s latest venture, Distributional Inc., focuses on a fast-growing challenge in today’s AI landscape: reliability. The company helps organizations ensure AI systems behave as expected and can be trusted in real-world use. It’s already raised $30 million and grown to a team of 30.

Read more about his work

Graduate students take mathematics beyond OSU

Mathematics students Bang, Fara, Fazekas, Mahajan, Mathangadeera, Obieke, Oguadimma, Unger-Schulz, and Slugg represented OSU at Cascade RAIN 2024 in Portland, with talks by Fara, Mathangadeera, and Slugg. The event, originally launched by OSU in 2014, returns to OSU in 2025. Read more about Cascade RAIN 2024.

Praveeni Mathangadeera received a poster prize (second place) at the October 13-15, 2023 SIAM PNW Section meeting which took place in Bellingham WA. Her poster presentation title was “Sensitivity to particular hypothesis in a permafrost model responding to surface temperature variations.” Praveeni received travel support in order to attend. Praveeni was selected in 2024 to present her research poster at the AWM session during JMM in San Francisco, with full support provided. She also received support to present at the SIAM Data Science Conference in Atlanta as part of the Broader Engagement @MDS24 program, following travel to SIAM Annual 2024 in Spokane, backed by AWM. Read more on Mathangadeera’s travel.

Tyler Fara and Praveeni Mathangadeera attended ICERM workshops on numerical PDEs in spring 2024. Tyler presented with partial support from ICERM, while Praveeni attended with full support from the AWM-SIAM scholarship. More on their ICERM participation.

Victory Obieke gave a fully funded poster presentation at SIAM MDS24 through the Sustainable Horizon Institute. Her research with Prof. Bokil focused on energy-preserving discretizations in nonlinear optical wave propagation using the Maxwell-Duffing model. Explore her SIAM MDS24 presentation.

Nikolaus Elsaesser attended two fully supported summer schools—one at SLMath on interacting particle systems and another on integrable probability at the University of Virginia.

Hosting exceptional mathematicians

The last year's major public lectures brought mathematicians representing a breadth of interests to Oregon State.

Nathaniel Whitaker (University of Massachusetts Amherst) reflected on his trajectory from segregated schools in Virginia to department head at UMass, weaving personal narrative with insights from fluid dynamics and mathematical biology. Matthew Foreman (University of California, Irvine) delivered the 40th Annual Lonseth Lecture, addressing the central role of impossibility results in mathematics and the philosophical questions they raise. Rachel Ward (University of Texas at Austin and Microsoft Research) presented our Milne Lecture, tracing the evolution of machine learning and generative AI back to their mathematical origins.

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