Gregory received his BS in Electrical Engineering (1969) from Marquette University, MS in Electrical Engineering (1970), MA in Mathematics (1972) and PhD in Applied Mathematics (1974) from University of California at Los Angeles.
Gregory's research focuses include applied mathematics, asymptotic methods, differential equations, bifurcation theory, wave propagation, acoustics, electromagnetic fields, circuit theory and more.
According to the Mathematics Genealogy Project, Gregory mentored a total 10 doctoral students (total of 17 descendants) at Northwestern University and New Jersey Institute of Technology including John Pelesko.
He is an Associate Editor of Analysis and Applications, Journal of Engineering Mathematics (JEMA), IMA Journal of Applied Mathematics (IMA) and European Journal of Applied Mathematics.
- http://fellows.siam.org/index.php?sort=year&value=2009 'Society for Industrial and Applied Mathematics: SIAM Fellows – Class of 2009'