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Youssef Raffoul


Full-Time Faculty

College of Arts and Sciences: Mathematics


Email: Youssef Raffoul
Phone: 937-229-2104
SC 302A


  • Ph.D., Southern Illinois University at Carbondale, 1996
  • M.S., University of Dayton, 1989
  • B.S., University of Dayton, 1987


Dr. Youssef Raffoul holds the rank of  Professor and is the  Graduate Program Director in the Department of Mathematics at the University of Dayton. He joined the faculty in 1999. Dr. Raffoul obtained a B.S. and M.S. from the University of Dayton in mathematics in 1987 and 1989. After receiving his Ph.D. in mathematics from Southern Illinois University at Carbondale in 1996, he joined the faculty of the Mathematics Department at Tougaloo College in Mississippi, where he became the department chair for two years until he came to Dayton.

Prof. Raffoul has published extensively in the area of functional differential and difference equations and has won several awards for his research, most recently, the Career in Science Award from the Lebanese Government.  In 2018, Prof. Raffoul published Qualitative Theory of Volterra Difference Equationsa comprehensive study of the theory and applications of Volterra difference equations.

Research Interests

  • Differential/difference equations
  • Integral equations
  • Integrodifferential equations