Philip Gressman

Philip T. Gressman
Born (1978-11-22) November 22, 1978
Alma materWashington University in St. Louis (AB, 2001)
Princeton University (PhD, 2005)
Scientific career
FieldsMathematics
WorkplacesYale University
University of Pennsylvania
ThesisLp-Lq estimates for radon-like operators (2005)
Elias Stein

Philip Thaxton Gressman (born November 22, 1978) is an American mathematician and professor of mathematics at the University of Pennsylvania. His research is in harmonic analysis, geometry, and partial differential equations, including work on geometric averaging operators, oscillatory integral operators, Fourier restriction, and the Boltzmann equation. He was named a Fellow of the American Mathematical Society in the 2025 class.[1]

Early life and education

Gressman grew up in Ava, Missouri, and graduated from Ava High School in 1997.[2] He received a Bachelor of Arts degree from Washington University in St. Louis in 2001, where he double majored in mathematics and physics, and was advised by Guido Weiss and Edward N. Wilson.[3][4] He completed a PhD in mathematics at Princeton University in 2005 under the supervision of Elias Stein; his dissertation was titled Lp-Lq estimates for radon-like operators.[5]

Career and research

After completing his doctorate, Gressman was a J. W. Gibbs Assistant Professor at Yale University from 2005 to 2008.[6] He joined the faculty of the University of Pennsylvania in 2008, where he serves as professor of mathematics and undergraduate chair.[7]

Gressman's research investigates the intersection of harmonic analysis and geometry. His areas of interest include geometric averaging operators, oscillatory integral operators, sublevel set estimates, Fourier restriction, and other problems in analysis and partial differential equations.[8]

He is known for his joint work with Robert M. Strain on the Boltzmann equation. Their work established existence, uniqueness, and rapid convergence to equilibrium for perturbative classical solutions of the Boltzmann equation with long-range interactions.[9][10]

Honors and awards

References

  1. ↑ "2025 Class of Fellows of the AMS". American Mathematical Society. Retrieved 2026-06-04.
  2. ↑ "Mailing List WWW Gateway". Passport to Knowledge. Archived from the original on 2002-08-23. Retrieved 2018-06-13.
  3. ↑ "Washington University Math Department Newsletter" (PDF). 2008. Archived (PDF) from the original on 2019-03-28. Retrieved 2019-03-28.
  4. ↑ "Philip Gressman". Yale University Department of Mathematics. Archived from the original on 2015-07-09. Retrieved 2018-06-13.
  5. ↑ "Philip Gressman - Mathematics Genealogy Project". Mathematics Genealogy Project. Archived from the original on 2018-08-09. Retrieved 2018-06-13.
  6. ↑ "Philip T. Gressman Short Curriculum Vitae" (PDF). Department of Mathematics, University of Pennsylvania. Archived (PDF) from the original on 2020-06-04. Retrieved 2018-07-18.
  7. ↑ "Philip Gressman". Department of Mathematics, University of Pennsylvania. Retrieved 2026-06-04.
  8. ↑ "Philip Gressman". Department of Mathematics, University of Pennsylvania. Retrieved 2026-06-04.
  9. ↑ Gressman, Philip T.; Strain, Robert M. (2011). "Global classical solutions of the Boltzmann equation without angular cut-off". Journal of the American Mathematical Society. 24 (3): 771–847. arXiv:1011.5441. doi:10.1090/S0894-0347-2011-00697-8. S2CID 115167686.
  10. ↑ "Mathematicians Solve 140-Year-Old Boltzmann Equation". Penn Today. 2010-05-12. Archived from the original on 2018-07-19. Retrieved 2018-07-18.
  11. ↑ "Fellows Database". Alfred P. Sloan Foundation. Retrieved 2026-06-04.
  12. ↑ "2025 Class of Fellows of the AMS". American Mathematical Society. Retrieved 2026-06-04.
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