Mahesh Ranpati Dewage is an Assistant Professor of Mathematics at Ottawa University’s residential campus in Surprise, Arizona, since July 2025. Prior to joining Ottawa University, he served as a Graduate Teaching Assistant and Research Assistant at the University of Texas at Dallas, a Teaching Assistant at Western Illinois University, an Adjunct Mathematics Faculty at the American College of Higher Education, and a Demonstrator/Temporary Lecturer in the Department of Physics at the University of Kelaniya. He earned his PhD in Mathematics in 2025 from the University of Texas at Dallas, where he also completed an MS in Mathematics with a Data Science specialization and a Graduate Certificate in Data Science in 2023. He holds an MS in Mathematics from Western Illinois University (2019) and a BSc in Mathematical Physics from the University of Kelaniya, Sri Lanka (2015).
Dr. Ranpati Dewage has taught a wide range of undergraduate mathematics courses, including Discrete Mathematics, Calculus I–III, Linear Algebra, Differential Equations, Probability, and Inferential Statistics. He also has experience mentoring graduate students in advanced courses such as Machine Learning & Control Theory and Numerical Analysis. In addition to mathematics, he has taught physics, including introductory laboratory courses in elementary physics.
A broadly trained applied mathematician, Dr. Ranpati Dewage works at the intersection of stochastic dynamic programming, impulse control, optimization, and machine learning, with a focus on decision-making under uncertainty. His research develops inventory control models that integrate dynamic pricing and voluntary environmental protection, advancing sustainable operations through (s,S)-type policies and their extensions. He is also actively engaged in applications of mathematics and control theory in biology, infectious disease modeling, cancer therapy, and environmental pollution control, including game-theoretic approaches to sustainability.
His scholarly contributions include peer-reviewed publications and ongoing manuscripts on dynamic environmental and pricing policies in inventory control. He has presented his research at multiple venues, including a conference talk on heuristic algorithms for optimal circle packing at the Graduate Research Conference of Western Illinois University and an earlier presentation on topological insulator nanofilms at the International Research Symposium on Pure and Applied Sciences at the University of Kelaniya, Sri Lanka. He remains active in professional organizations such as INFORMS, SIAM, and the AMS. Dr. Ranpati Dewage’s honors include the Mei Lein Fellowship from the University of Texas at Dallas (2024) and the Glenn Ayre Mathematics Award for excellence in graduate studies at Western Illinois University (2019).
Dr. Ranpati Dewage has also been active in leadership and service. He initiated the Expanding Horizons interdisciplinary colloquium series at Ottawa University in Fall 2025. At the University of Texas at Dallas, he served as Vice President of the Sri Lankan Student Association (May 2022–April 2023) and volunteered at the Special Metrics in Complex Geometry Conference (May 2022). He also worked as a summer camp counselor for a science, art, and cosplay camp at Western Illinois University (Summer 2019), where he was a Graduate Student Representative for both the Math Department and the Math Club (Fall 2019). He was also a facilitator for a teacher training workshop for secondary school Bio System Technology teachers at the University of Kelaniya, Sri Lanka (July 2016).
Outside of academics, he enjoys hiking, volleyball, running, and kayaking. He also pursues physics and other theoretical and abstract disciplines as a hobby. One of his favorite quotes is by Richard Feynman: “Study hard what interests you the most in the most undisciplined, irreverent, and original manner possible.”