Education
Doctorate Degree
PhD in Mathematics
Univ of Cincinnati Main Campus, 1984
Master's Degree
MS in Mathematics
Univ of Cincinnati Main Campus, 1982
Bachelor's Degree
BA in Mathematics
Universidad de Bogota, 1980
Featured scholarly/creative works
- Dix, J. G., Srivastava, S. N., Padhi, S., Alexander Domoshnitsky, A., & Padhi, A. (2026). Predator prey model with prey harvesting, cross diffusion, intraspecific predator competition, and periodic parameters. Electronic Journal of Qualitative Theory of Differential Equations\, 2026(2025), 1–20. Retrieved from https://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1¶mtipus_ertek=publication¶m_ertek=11888
- Dix, J. G., & Wu, H. (2023). Another improvement on oscillation criteria for first-order delay differential equations. Journal of Applied Analysis and Computation, 13(3), 1421–1428.
- Dix, J. G., Kilic, N., & Ocalan, O. (2022). Oscillation criteria for first-order differential equations with several delays. Filomat, 36(16), 5665–5675. Retrieved from https://doi.org/10.2298/FIL2216665D
- Dix, J. G. (2021). Improved oscillation criteria for first-order delay differential equations with variable delay. Electronic Journal of Differential Equations, 2021, 1–12. Retrieved from http://ejde.math.txstate.edu
- Santra, S. S., & Dix, J. G. (2020). Necessary and sufficient conditions for the oscillation of solutions to a second-order neutral differential equation with impulses. Nonlinear Studies, 27, 375–387.
Featured awards
- Award / Honor Recipient: Research Excellence Award, Math Dept. 2011
- Award / Honor Recipient: Research Excellence Award, Math Dept. 2009
- Award / Honor Recipient: Special Recognition Award, Math Dept. 2000
- Award / Honor Recipient: Research Excellence Award, Math Dept. 1999

Featured service activities
- Chair
Recruitment
- Chair
Recruitment committee
- Editor
Electron. Journal of Diff. Equations
- Member
Marrit/Perfomance committee
- Chair
Library Subcommittee
- Coordinator / Organizer
Texas Partial Diff. Eqns. Cconference
