Peter B Gilkey is a Professor of Mathematics. He is a fellow of the American Mathematical Society and is a member of the editorial board of Differential Geometry and its Applications and The Journal of Geometric Analysis. He received his Ph.D. in 1972 from Harvard University under the direction of L. Nirenberg. His research specialties are Differential Geometry, Elliptic Partial Differential Equations, Algebraic Topology, and Linguistics. He has published more than 285 research articles and books.