Biographical Sketch

Stephen L. Clark
Department of Mathematics and Statistics
Missouri University of Science and Technology
400 W. 12th Street
Rolla, MO 65409-0020

Professional Preparation

College of Wooster, B.A., 1971
University of Illinois, Urbana-Champaign, M.S., 1977
Univeristy of Tennessee, Knoxville, Ph.D., 1987


Chancellor's Professor, Missouri S&T, 2019–present
Professor Emeritus, Missouri S&T, 2019
Professor, Missouri S&T, 2003
Associate Professor, Missouri S&T, 1993
Assistant Professor, Missouri S&T, 1987
Chairman, Department of Mathematics and Statistics, Missouri S&T, 2013–2019
Special Assistant to Provost, 2010–2013
Visiting Fellow, Isaac Newton Institute for Mathematical Sciences, Cambridge University, 2011
Visiting Professor, Baylor University, 2004
Visiting Professor, University of Missouri-Columbia, 2000–2001
Visiting Professor, University of Missouri-Columbia, 1998

Selected Service

Campus Promotion and Tenure Committee Missouri S&T, 2005–2008, 2007–2008 Chairman
College of Arts and Sciences Promotion and Tenure Committee, Missouri S&T, 1994–1995, 2003–2005, 2006–2007 Chairman
Academic Council Tenure Committee, Missouri S&T, 2005–2006
Campus Third-Year Review Committees, Missouri S&T, 2006–2019
Academic Council Committee for Effective Teaching and Faculty Awards, Missouri S&T,1995–2000
Missouri Institute of Computational and Applied Mathematics, Director, Missouri S&T 2013–2019

Research Interests

My research efforts have focused on boundary value problems and the related spectral and inverse spectral theory, control and oscillation theory for differential and difference equations; in particular, that involving Jacobi, CMV, Symplectic, and Hamiltonian operators and systems.


National Science Foundation-Division of Applied Mathematics: "Collaborative Research: Systems of Ordinary Differential Equations-Inverse and Non-Self-Adjoint Problems", Award Number DMS-0405528; Co-PI F.Gesztesy, University of Missouri-Columbia; Total: $213,428.00 (July –July 2007).

Selected Publications (over 30)

S. Clark, P. Zemanek, "Characterization of self-adjoint extensions for discrete symplectic systems", Journal of Mathematical Analysis and Applications, 140 (2016), 323–350

S. Clark, F. Gesztesy, R. Nichols, and M. Zinchenko, "Boundary data maps and Krein's resolvent formula for Sturm-Liouville operators on a finite interval", Operators and Matrices, 8 (2014), 1–77

S. Clark, F. Gesztesy, and M. Zinchenko, "Weyl-Titchmarsh and Borg-Marchenko-type Uniqueness Results for CMV Operators with Matrix-Valued Verblunsky Coefficients", Operators and Matrices 1 (2007), 535–592

S. Clark, and J. Henderson, "Uniqueness implies existence and uniqueness criterion for nonlocal boundary value problems for third order differential equations", Proceedings of the American Mathematical Society. 134 (2006), no. 11, 3363–3372

S. Clark, F. Gesztesy, and W. Renger, "Trace formulas and Borg-type theorems for matrix-valued Jacobi and Dirac finite difference operators", Journal of Differential Equations, 219 (2005), 144–182

S. Clark and F. Gesztesy, "Weyl-Titchmarsh M-function asymptotics, local uniqueness results, trace formulas, and Borg-type theorems for Dirac operators", Transactions of the American Mathematical Society, 354 (2002), no. 9, 3475–3534

S. Clark, Y. Latushkin, S. Montogomery and T. Randolph, "Stability radius and internal versus external stability in Banach space: An evolutionary semigroup approach", SIAM Journal of Optimization and Control, 38 (2000), no. 6, 1757–1793

S. Clark, F. Gesztesy, H. Holden and B. Levitan, "Borg-type theorems for matrix-valued Schrödinger operators"", Journal of Differential Equations, 167 (2000), 181–210


C. Ahlbrandt7, M. Bohner4, R. Brown6, C. Chicone7, F. Gesztesy7, J. Henderson2, D. Hinton12, H. Holden5, J.W. Hooker10, Y. Latushkin7, B. Levitan8, M. Mitrea7, S. Montgomery-Smith7, R. Nichols11, W. Patula10, T. Randolph3, W. Renger1, J. Ridenhour13, W. Steiger1, M. Zinchenko9, P. Zemanek14

1. Address Unknown, 2. Baylor Univ., 3. Fred Hutchinson Cancer Research Center, 4. Missouri S&T, 5. Norwegian Univ. Science and Tech., 6. Univ. Alabama-Tuscaloosa, 7. Univ. Missouri, 8. Univ. Minnesota, 9. Univ. New Mexico, 10. Southern Illinois Univ., 11. Univ. Tennessee-Chattanooga, 12. Univ. Tennessee-Knoxville, 13. Utah State Univ., 14. Masaryk Univ.