Contact Information
1409 W. Green Street
Urbana, IL 61801
Research Areas
Research Interests
Modular forms and number theory.
Additional Campus Affiliations
Professor, Mathematics
External Links
Recent Publications
Ahlgren, S., Castillo, C., & Williams, C. (2026). EISENSTEIN SERIES MODULO PRIME POWERS. Proceedings of the American Mathematical Society, Series B, 13(1), 1-13. https://doi.org/10.1090/bproc/279
Ahlgren, S., Hanson, M., Raum, M., & Richter, O. K. (2026). Eisenstein series modulo p 2. Forum Mathematicum, 38(1), 93-102. https://doi.org/10.1515/forum-2024-0470
Ahlgren, S., Andersen, N., & Dicks, R. (2025). Congruences like Atkin's for generalized Frobenius partitions. Bulletin of the London Mathematical Society, 57(12), 3902-3918. https://doi.org/10.1112/blms.70224
Ahlgren, S., & Beckwith, O. (2025). Scarcity of partition congruences on semiprime progressions. Ramanujan Journal, 68(3), Article 83. https://doi.org/10.1007/s11139-025-01245-w
Ahlgren, S., Andersen, N., & Dicks, R. (2024). The Shimura lift and congruences for modular forms with the eta multiplier. Advances in Mathematics, 447, Article 109655. https://doi.org/10.1016/j.aim.2024.109655