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Personal profile

Research Interests

Modular forms and number theory.

Office Address

Department of Mathematics
367 Altgeld Hall, MC-382
1409 W. Green Street
Urbana, IL 61801

Office Phone

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Collaborations and top research areas from the last five years

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  • Eisenstein series modulo p 2

    Ahlgren, S., Hanson, M., Raum, M. & Richter, O. K., Jan 1 2026, In: Forum Mathematicum. 38, 1, p. 93-102 10 p.

    Research output: Contribution to journalArticlepeer-review

  • EISENSTEIN SERIES MODULO PRIME POWERS

    Ahlgren, S., Castillo, C. & Williams, C., 2026, In: Proceedings of the American Mathematical Society, Series B. 13, 1, p. 1-13 13 p.

    Research output: Contribution to journalArticlepeer-review

  • Theta Cycles of Modular Forms Modulo p2

    Ahlgren, S., Raum, M. & Richter, O. K., Apr 13 2026, (E-pub ahead of print) In: Canadian Journal of Mathematics.

    Research output: Contribution to journalArticlepeer-review

    Open Access
  • Congruences like Atkin's for generalized Frobenius partitions

    Ahlgren, S., Andersen, N. & Dicks, R., Dec 2025, In: Bulletin of the London Mathematical Society. 57, 12, p. 3902-3918 17 p.

    Research output: Contribution to journalArticlepeer-review

  • Scarcity of partition congruences on semiprime progressions

    Ahlgren, S. & Beckwith, O., Nov 2025, In: Ramanujan Journal. 68, 3, 83.

    Research output: Contribution to journalArticlepeer-review

    Open Access