Claudia Alfes

Publications and Preprints

23) C. Alfes, J. Maglione, C. Voll, Symplectic Hecke eigenbases from Ehrhart polynomials, arXiv:2507.11728, Preprint (2025). pdf

22) C. Alfes, B. Depouilly, P. Kiefer, M. Schwagenscheidt, Cycle integrals of meromorphic Hilbert modular forms, arXiv:2406.03465, Preprint (2024). pdf

21) C. Alfes, P. Kiefer, J. Mazáč, Measures, modular forms, and summation formulas of Poisson type, Comm. Math. Phys., 406, 137 (2025). pdf

20) C. Alfes, J. Maglione, C. Voll, Ehrhart polynomials, Hecke series, and affine buildings, Sém. Lothar. Combin. 91B (2024), Art. 84, 12 pp. pdf

19) C. Alfes, M. Mertens, On Kleinian mock modular forms, Res. Math. Sci. 11, 6 (2024). pdf

18) C. Alfes-Neumann, J. Funke, M. Mertens, E. Rosu, On Jacobi-Weierstrass mock modular forms, Adv. Math. 465 (2025), Paper No. 110147, 33 pp. pdf

17) C. Alfes-Neumann, J. Bruinier, M. Schwagenscheidt, Harmonic weak Maass forms and periods II, Math. Ann. 391 (2025), no. 1, 791–817. pdf

16) C. Alfes-Neumann, I. Burban, M. Raum, A classification of polyharmonic Maaß forms via quiver representations, J. Algebra 661 (2025), 713–756. pdf

15) C. Alfes-Neumann, M. Raum, A classification of harmonic weak Maaß forms of half-integral weight, Res. Number Theory, 9:48 (2023). pdf

14) C. Alfes-Neumann, K. Bringmann, J. Males, M. Schwagenscheidt, Cycle integrals of meromorphic modular forms and coefficients of harmonic Maass forms, J. Math. Anal. Appl. 497 (2021), no. 2, Paper No. 124898, 15 pp. pdf

13) C. Alfes-Neumann, M. Schwagenscheidt, Traces of reciprocal singular moduli, Bull. Lond. Math.Soc. 52 (2020), no. 4, 641-656. pdf

12) C. Alfes-Neumann, K. Bringmann, M. Schwagenscheidt, On the rationality of cycle integrals of meromorphic modular forms, Math. Ann. 376 (2020), no. 1-2, 243-266. pdf

11) C. Alfes-Neumann, M. Schwagenscheidt, Shintani theta lifts of harmonic Maass forms, Trans. Amer. Math. Soc. 374 (2021), no. 4, 2297–2339. pdf

10) C. Alfes-Neumann, M. Schwagenscheidt, Identities of Cycle Integrals of Weak Maass Forms, Ramanujan J. 52 (2020), no. 3, 683-688. pdf

9) C. Alfes-Neumann, M. Schwagenscheidt, A theta lift related to the Shintani lift, Advances in Mathematics, Volume 328 (2018), 858-889. pdf

8) C. Alfes, M. Griffin, K. Ono, and L. Rolen, Weierstrass mock modular forms and elliptic curves, Research in Number Theory, 1:24 (2015). pdf

7) C. Alfes, Formulas for the coefficients of half-integral weight harmonic Maass forms, Mathematische Zeitschrift, Volume 227, Issue 3 (2014), 769-795. pdf

6) C. Alfes, and T. Creutzig, The mock modular data of a family of superalgebras, Proc. Amer. Math. Soc., 142 (2014), 2265-2280. pdf

5) C. Alfes, and S. Ehlen, Twisted Traces of CM values of weak Maass forms, J. Number Theory,Volume 133, Issue 6, 1827-1845. pdf

4) C. Alfes, Parity of the coefficients of Klein’s $j$-function, Proc. Amer. Math. Soc., 141 (2013), 123-130. pdf

3) C. Alfes, K. Bringmann, and J. Lovejoy, Automorphic properties of generating functions for generalized odd rank moments and odd Durfee symbols, Math. Proc. Cambridge Phil. Soc., 151 (2011), 385-406. pdf

2) C. Alfes, M. Jameson, and R. Lemke Oliver, Proof of the Andrews-Alder Conjecture, Proc. Amer. Math. Soc. 139 no. 1 (2011), 63-7. pdf

1) C. Alfes, Congruences for Ramanujan’s $\omega(q)$,  Ramanujan J. 22 (2010), no. 2, 163-169. pdf

Dissertation

C. Alfes, CM values and Fourier coefficients of harmonic Maass forms, Dissertation, TU Darmstadt, tuprints. pdf

Miscellaneous

C. Alfes-Neumann, Modulformen - Fundamentale Werkzeuge der Mathematik, Springer, Essentials.

C. Alfes-Neumann, Algebraic formula for the partition function, entry in Encyclopedia of Srinivasa Ramanujan and His Mathematics, editors: Krishnaswami Alladi, George E. Andrews, Bruce C. Berndt, and Ken Ono, accepted.

C. Alfes-Neumann, An introduction to the theory of harmonic Maass forms, In: Bruinier J., Kohnen W. (Eds) L-Functions and Automorphic Forms, Contributions in Mathematical and Computational Sciences, vol 10. Springer, Cham.

Editorial Boards

Since January 2025 I am a member of the editorial board of the Ramanujan Journal.

PhD Students and Postdocs

Current

• Annika Burmester (Postdoc)

• Gabriele Bogo (Postdoc)

• Carlos Caralps (PhD, co -supervised with Lennart Gehrmann)

• Anna Guntermann (PhD)

Former PhD Students

• Rebekka Strathausen (now a Postdoc at TU Darmstadt)

Former Postdocs

• Paul Kiefer (now a Postdoc at U Antwerp) 

Press

• Magic equations: Aktuell Uni Bielefeld

• Modular forms: Quanta Magazine

• Doing mathematics means being creative: Aktuell Uni Bielefeld