Draft:Timothy Healey (mathematician)

Timothy J. Healey is an American applied mathematician working in the areas of nonlinear elasticity, partial differential equations and the calculus of variations. He is currently a professor in the Department of Mathematics, Cornell University.

Education and Career
Healey received his bachelor's degree in engineering from the University of Missouri in 1976 and worked as a structural engineer between 1978 and 1980. He received his PhD from the University of Illinois at Urbana-Champaign in 1985 under the guidance of Robert Muncaster in mathematics with mentoring from Donald Carlson and Arthur Robinson in mechanics. He spent a postdoctoral year with Stuart Antman at the University of Maryland before joining the faculty at Cornell University, where he has held full-time positions in the Department of Theoretical and Applied Mechanics, Mechanical and Aerospace engineering and Mathematics.

Research
Healey's research focuses on mathematical aspects of elasticity theory. In his early career, he made fundamental contributions to the study of global bifurcations in problems with symmetry using group-theoretic methods. He is also known for development of a topological degree similar to the Leray-Schauder degree which leads to the existence of solutions in nonlinear elasticity.