• Number Theory
• Modular Forms, Automorphic Forms
• LMFDB

1. Higher Green functions and their CM values (with Jan H. Bruinier and T. Yang, in preparation)
2. On the modular completion of certain generating functions (with K. Bringmann, and Markus Schwagenscheidt), preprint (2018), accepted for publication in IMRN, arXiv
3. Central L-values of elliptic curves and local polynomials (with P. Guerzhoy, B. Kane, and L. Rolen), 2019 Proc. Lond. Math. Soc. 120 (5), 742-769, arXiv
4. On two arithmetic theta lifts (with Siddarth Sankaran), 2018, Compositio Mathematica 154 (10), 2090-214, arXiv
5. Computing Invariants of the Weil representation (with N. P. Skoruppa), in L-Functions and Automorphic Forms (2017, Contributions in Mathematical and Computational Sciences 10, Springer), arXiv
6. Regularized inner products and errors of modularity (with K. Bringmann and N. Diamantis), 2017, International Mathematics Research Notices, arXiv
7. Vector valued theta functions associated with binary quadratic forms, Forum Mathematicum 28 (2016), 5, pp. 893-908, arXiv
8. CM values of regularized theta lifts and harmonic Maass forms of weight one, Duke Math. J., Volume 166, Number 13 (2017), 2447-2519, arXiv
9. Lattices with many Borcherds products, with J. H. Bruinier and E. Freitag, Math. of. Comp. 85 (2016), 1953-1981 arXiv
10. Singular moduli of higher level and special cycles, Research in the Mathematical Sciences 2015 2:16, arXiv
11. Thesis: CM values of regularized theta lifts (2013), tuprints
12. Twisted Traces of CM values of weak Maass forms (with C. Alfes), J. Number Theory 133 (2013), no. 6. arXiv, computations
13. On CM values of Borcherds products and harmonic weak Maass forms of weight one, preprint (2012), arXiv
14. Twisted Borcherds products on Hilbert modular surfaces and the regularized theta lift, Int. J. Number Theory 6 (2010), no. 7, 1473-1489. 

• Universität zu Köln, Winter 2019/2020: Zahlentheorie II
• Universität zu Köln, Sommer 2019: Seminar zu Zahlentheorie und Algebra
• Universität zu Köln, Sommer 2019: Algebraische Zahlentheorie (Zahlentheorie I)
• Universität zu Köln, Winter 2018/2019: Algebra
• Universität zu Köln, Summer 2018: Seminar on rational quadratic forms
• Universität zu Köln, Summer 2018: Lineare Algebra II
• Universität zu Köln, Winter 2017/2018: Algebra
• Universität zu Köln, Summer 2017: Mathematik für Lehramtsstudierende II
• Universität zu Köln, Winter 2016/2017: Mathematik für Lehramtsstudierende I
• McGill University, Winter 2016: Introduction to modular forms
• McGill University, Summer 2015: Math 141 - Calculus 2, Mo-Thu, 8:35-10:55, BURN 1B36, myCourses, WebWork
• McGill University, Fall 2014: Math 223 - Linear Algebra

• Arithmetic and Geometric Aspects of Modular Forms, July 22-23, 2019, Oxford, UK
• 2018 Joint meeting of Korean Mathematical Society and the German Mathematical Society, October 3-6, 2018, Seoul, Korea
• ELAZ, September 3-7, 2018 (Organizer with K. Bringmann and P. Moree)
• Building Bridges: 4th EU/US Summer School + Workshop on Automorphic Forms and Related Topics, July 9-20, 2018, Worksheet for the summer shool
• The Bellairs Workshop in Number Theory 2018, Unitary Shimura varieties and modular forms, April 27 - May 4, 2018, Bellairs Research Institute, Holetown, Barbados
• Trends in Modular Forms, December 19-22, 2017, NIMS, Korea
• German-Romanian Mathematics Societies joint meeting, special session on "Automorphic Forms and L-Functions", 16-19 September 2017, Constanta, Romania
• Indefinite theta functions and applications in Physics and geometry, 6-9 June 2017, Trinity College Dublin, Ireland
• Modular forms are everywhere (co-organizer of the summer school), May 15-26, 2017, MPIM Bonn, Germany
• CNTA 2016, June 20-24, 2016, University of Calgary, Alberta, Canada
• LMFDB workshop (Organizer), May 9-12, 2016, AIM, San Jose, CA, USA
• Modular Forms and Moduli Spaces, April 24 - 30, 2016, MFO, Oberwolfach, Germany
• Alberta Number Theory Days VII , June 12-14, 2015 (Banff, AB)
• Automorphic forms: advances and applications, May 25-29, 2015, CIRM, Luminy, France
• Harmonic Maass forms and arithmetic applications, lecture series (w. Yingkun Li), April 2015, KIAS, Seoul, Korea
• The Kudla programme, April 6-10, 2015, CRM, Montreal, Canada
• Number Theory: From Arithmetic Statistics to Zeta elements, September 2014 - April 2015, CRM, Montreal, Canada
• Building Bridges: 2nd EU/US Summer School + Workshop on Automorphic Forms and Related Topics, July 30 - August 11, 2014, Bristol, UK
• LMFDB Workshop, June 2 - 6, 2014, Warwick, UK
• Modular Forms, April 27 - May 3, 2014, MFO, Oberwolfach, Germany
• Heights and Moduli Spaces, June 10-14, 2013, Lorentz Center, Netherlands
• The Bellairs Workshop in Number Theory, May 3-10, 2013, Bellairs Research Institute, Barbados
• Automorphic Forms and L-Functions, March 17-19, 2013, Darmstadt, Germany
• Building Bridges: 1st EU-US conference on Automorphic Forms and related topics, Summer School and Conference, July 30 - August 8, 2012, Aachen, Germany
• Arithmetic geometry of orthogonal and unitary Shimura varieties, June 3-8, 2012, Banff, Canada
• 26th Automorphic Forms Workshop (2012), April 26-29, 2012, Vancouver, Canada
• Symposium:Modular Forms, Mock Theta Functions, and Applications, February 27 - March 3, 2012, Cologne, Germany
• Student Conference on Automorphic Forms, October 11-13, 2011, Darmstadt, Germany
• Explicit theory of automorphic forms, applications and computations, May 9-13, 2011, Centre International de Rencontres Math'ematiques in Luminy, France
• 25th Automorphic Forms Workshop, March 23-26, 2011, Corvallis, OR, USA
• Postech Winter School 2011: Serre's Modularity Conjecture, January 14-21, 2011, Pohang, Korea
• DMV-Studierenkonferenz 2009, October 1-2 2009, Bochum, Germany
• Automorphic Forms and L-functions: Computational Aspects, June 22 - July 3, 2009, Montreal, Canada
• Mock theta functions and applications in combinatorics, algebraic geometry, and mathematical physics, May 25-29, 2009, MPIM Bonn, Germany
• The Bellairs Workshop in Number Theory, May 3-10, 2009, Barbados

Research Seminar Darmstadt-Frankfurt: Superstarrheit und Arithmetizität (SS 13), Arakelov-Theorie (WS 12/13), Selbergs 3/16 Theorem (SS 12)