In Preparation

1. A Note on the Helly-Bray Convergence Theorem.

2. (With Rudi Weikard), Balanced Exponential Functions and the Generalized Laplace Transform.

Submitted

3. Mean Value Theorems and L’Hospital-Type Rules for Regulated Functions, March, 2025.
Available at https://arxiv.org/pdf/2305.17572

4. Refuting a Recent Proof of the Invariant Subspace Problem, March, 2024.
Available at https://arxiv.org/pdf/2411.19409

Published

5. (With Rudi Weikard and Steven Redolfi) Measure and Integration: Concepts, Examples, and
Applications, A graduate-level textbook covering measure and integration theory along with related
topics. Sponsored by Elsevier; Published by Elsevier January 30,2026.

6. (With Rudi Weikard) Sign-Changing Points of Solutions of Homogeneous Sturm-Liouville Equations
with Measure-Valued Coefficients, Published by Applicable Analysis, vol. 101, no. 5, 2022, pp. 1556-
1570.
Available at https://www.tandfonline.com/doi/abs/10.1080/00036811.2021.1932835

7. (With Rudi Weikard), Spectral Theory for Systems of Ordinary Differential Equations with
Distributional Coefficients, Published by the Journal of Differential Equations, vol. 268, no. 6, 2020,
pp. 27522801.
Available at https://www.sciencedirect.com/science/article/abs/pii/S0022039619304437

8. (With Rudi Weikard), On Leighton’s Comparison Theorem, Published by the Journal of Differential
Equations, vol. 262, no. 12, 2017, pp. 59785989.
Available at https://www.sciencedirect.com/science/article/pii/S002203961730087