Tim Sauer Professor of Mathematics Department of Mathematics George Mason University Mail Stop 3F2 Fairfax, VA 22030 Office: Email: Phone: Fax: 233 ST1 tsauer (at) gmu.edu +1 (703) 993-1471 +1 (703) 993-1491

Teaching

• Not teaching this semester.
• NSF Contact: tsauer (at) nsf.gov
• NSF Phone: +1 (703) 292-4876

GMU CSUMS Program

• The GMU Undergraduate Research in Computational Mathematics (URCM) program seeks interested students for the 2009-10 academic year. Supported by the National Science Foundation.
• Detailed information.
• Application deadline: March 13, 2009

Books

Editorial Boards

• SIAM Journal on Applied Dynamical Systems
• Journal of Difference Equations and Applications
• Physica D

Selected Publications and Preprints

1. D. Napoletani, T. Sauer, D. Struppa, E. Petricoin, L. Liotta, Augmented sparse representation of protein signaling networks. J. Theo. Biol. 255, 40 (2008).
2. T. Sauer, S. Schiff, Data assimilation for heterogeneous networks: the consensus set. Phys. Rev. E 79, 051909 (2009).
3. T. Sauer, Global convergence of max-type equations.
4. D. Napoletani, T. Sauer, Reconstructing the topology of sparsely-connected dynamical networks. Phys. Rev. E 77, 026103 (2008).
5. S. Schiff, T. Sauer, Kalman filter control of a model of spatiotemporal cortical dynamics. J. Neural Eng. 5, 1-8 (2008).
6. T. Sauer, Periodicity detection in nonautonomous difference equations. To appear, Advanced Studies in Pure Mathematics.
7. D. Napoletani, D. Struppa, T. Sauer, V. Morozov, N. Vsevelodov, C. Bailey, Functional dissipation microarrays for classification. Pattern Recognition 40, 3393-3400 (2007).
8. T. Sauer, Attractor reconstruction. Scholarpedia 1(10):1727 (2006).
9. D. Napoletani, C. Berenstein, T. Sauer, D. Struppa, D. Walnut, Delay coordinate embeddings as a data mining tool for denoising speech signals. Chaos 16, 043116 (2006).
10. T. Sauer, Computer arithmetic and sensitivity of natural measure. Journal of Difference Equations and Applications 11, 669-676 (2005).
11. S. Weinstein, T. Sauer, R. Kumar, S. Schiff, Neuronal spatiotemporal pattern discrimination: The dynamical evolution of seizures. Neuroimage 28, 1043 - 1055 (2005).
12. K. Jerger, S. Weinstein, T. Sauer, S. Schiff, Multivariate linear discrimination of seizures. Clinical Neurophysiology 116, 545-551 (2005).
13. T. Sauer, Reconstruction of shared nonlinear dynamics in a network. Physical Review Letters 93, 198701-4 (2004).
14. B. Hunt, E. Kalnay, E. Kostelich, E. Ott, D.J. Patil, T. Sauer, I. Szunyogh, J. Yorke, A. Zimin, Four-dimensional ensemble Kalman filtering. Tellus A56, 273-277 (2004).
15. T. Sauer, Chaotic itinerancy based on attractors of one-dimensional maps. Chaos 13, 947-952 (2003).
16. T. Sauer, Shadowing breakdown and large errors in dynamical simulations of physical systems. Phys. Rev. E 65, 036220 (2002).