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Dr. Thomas M Keller

  • Professor - Mathematics
  • Program Faculty - Mathematics
  • Program Faculty - Mathematics
Portrait of Dr. Thomas M Keller

Biography and education

Thomas Michael Keller received his Ph.D. in Mathematics from the University of Mainz (Germany) and is a Professor of Mathematics. His research is in finite group theory with a focus on the orbit structure of linear group actions.

Research Interests

  • Morey, Susan (Principal), Keller, Thomas M (Co-Principal). Research Experiences for Undergraduates Site in Mathematics, NSF, Federal, $36000. (Funded: 2001). Grant.
  • Yang, Yong (Principal), Keller, Thomas M (Co-Principal), Sun, Shuying (Supporting), Dochtermann, Anton (Supporting), Oh, Suho (Supporting), Shen, Xiaoxi (Supporting), Xiao, Jun (Supporting). NSF REU Site: Algebra, Combinatorics, and Statistics (#: 2447229), NSF, Federal, $271568. (Submitted: August 2024, Funded: April 1, 2025 - March 28, 2028). Grant.
  • Yang, Yong (Principal), Keller, Thomas M (Co-Principal), Sun, Shuying (Supporting), Zhao, Qiang (Supporting), Dochtermann, Anton (Supporting), Oh, Suho (Supporting). NSF REU Site: Algebra, Combinatorics, and Statistics (#: 2150205), NSF, Federal, $305417. (Submitted: August 2021, Funded: March 1, 2022 - February 28, 2026). Grant.
  • Keller, Thomas M. Grant of the Research Enhancement Program for Summer 2026, Texas State University, $12000. (Funded: 2026). Grant.
  • Keller, Thomas M. Online Resource Grant, Alkek Library, $17500. (Funded: March 2013). Grant.
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  • Hung, N. N., Keller, T. M., & Yang, Y. (2021). A lower bound for the number of odd-degree representations of a finite group. Mathematische Zeitschrift, 298, 1559–1572.
  • Keller, T. M., Pettigrew, G., Solotko, S., & Zheng, L. (2025). Classifying prime graphs of finite groups—a methodical approach. Journal of Pure and Applied Algebra, 229(11).
  • Keller, T. M., & Yang, Y. (2025). Bounding the number of p’-degrees characters from below. Forum Mathematicum, 37, 1545–1549.
  • Keller, T. M., & Moreto, A. (2024). Prime divisors and the number of conjugacy classes of finite groups. Mathematical Proceedings of the Cambridge Philosophical Society, 176(1), 1–16.
  • Huang, Z., Keller, T. M., Kissinger, S., Plotnick, W., Roma, M., & Yang, Y. (2024). A classification of the prime graphs of pseudo-solvable groups. Journal of Group Theory, 27(1), 89–117.
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  • Award / Honor Recipient: Faculty Development Leave for Spring 2024, Texas State University. January 2024 - May 2024
  • Award / Honor Recipient: Research Excellence Award, Department of Mathematics, Texas State University. 2021
  • Award / Honor Recipient: Selection of an article to be "presented for free download on the journal's website", Editorial Board of the journal "Archiv der Mathematik". December 2021
  • Award / Honor Recipient: Teaching Award of Honor, Texas State Alumni Assiciation. June 2020
  • Award / Honor Recipient: Faculty Developmental Leave to visit the Chongqing University of Arts and Sciences, China. 2018
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  1. Editor

    Journal of Algebra and its Applications

  2. Reviewer / Referee

    Quasigroups and Related Systems

  3. Reviewer / Referee

    Journal of Symbolic Computation

  4. Reviewer / Referee

    Bulletin of the Malaysian Mathematical Society

  5. Member

    Grad-Expo Committee

  6. Reviewer / Referee

    Proceedings of the London Mathematical Society

  7. View all activities