Michael Tsatsomeros' CV

Curriculum Vitae
Michael Tsatsomeros

Mathematics Department
Washington State University
Pullman, Washington 99164-3113
(509) 335-3144 (office)
(509) 335-1188 (fax)

E-mail: tsat at wsu.edu

EDUCATION

University of Connecticut

Michael Neumann

M.Sc., Mathematics, Concordia University, Montreal - 1986.
Supervisor: Prof. Ronald J. Stern.

B.Sc., Mathematics, University of Patras, Greece - 1984.

RESEARCH INTERESTS

Matrix analysis, especially the theory of nonnegative matrices and their generalizations. Particular interests include the numerical range, graphs and patterns associated with matrices, numerical linear algebra, applications in dynamical systems and control theory.

WORK EXPERIENCE

Washington State Univ.

Univ. of Regina.

College of William and Mary.

Univ. of Wisconsin-Madison

Univ.of Victoria

University of Connecticut

Concordia University

SUPERVISION

Elizabeth Ellison (Ph.D. 2007- )
Kent Griffin (Ph.D., 2004-2006)
Thesis title: Solving the Principal Minor Assignment Problem and Related Computations.
Bishan Li (Ph.D., 1995-1998)
Thesis title: Generalizations of Diagonal Dominance in Matrix Theory.
Fei Zhou (Post-doctoral fellow, 2006).
Panos Psarrakos (Post-doctoral fellow, 2000).
Mark Krupnik (Post-doctoral fellow, 1994-1995).
Chris Kanyer (M.Sc., 2006)
Olga Slyusareva (M.Sc., 2006).
Nelson Phouphakone (M.Sc., 2005).
Rokas Varaneckas (M.Sc. 2004).
Pietro Paparella (M.Sc., 2003).
Member of supervisory committees of:
Sherod Eubanks, Elizabeth Bodine, DeAnne Morris, Jong Sam Jeon, Amy Yielding, Hien Le, Jennifer Breckon,
Luisette Corpuz, Evan Yates, Mahmoud Manjegani, Sarah Carnochan-Naqvi.
Tricia Leis (Summer research student, 2001).
Research supervisor of Nathan Krislock (NSERC undergraduate award, 1999).

GRANTS/AWARDS

Catalyzing the Future Award, WSU, 2003
NSERC Research Grant, 2001-2002.
NSERC Equipment Grant (co-recipient), 2001.
NSERC Research Grant, 1997-2001.
Merit Award, Univ. of Regina, 1999.
NSERC Equipment Grant (co-recipient), 1996.
Merit Award, Univ. of Regina, 1996.
NSERC Equipment Grant, 1994.
NSERC Research Grant, 1994-1997.

PUBLICATIONS

To read pdf files get the Acrobat Reader from Adobe.
To request a hard copy of a paper send me an e-mail.

MathReviews items (includes papers, proceedings, reviews etc. - must subscribe to MathSciNet)

D. Noutsos and M.J. Tsatsomeros.
Reachability and holdability of nonnegative states
To appear in SIAM Journal on Matrix Analysis and Applications. [pdf]

K. Griffin, J. Stuart, and M. Tsatsomeros.
Noncirculant Toeplitz Matrices All of Whose Powers are Toeplitz.
To appear in Chzechoslovak Mathematical Journal. [pdf]

O. Slyusareva and M. Tsatsomeros.
Mapping and Preserver Properties of the Principal Pivot Transform.
Linear and Multilinear Algebra, 56(3):279-292, 2008. [pdf]

K. Griffin and M. Tsatsomeros.
Principal Minors, Part I: A Method for Computing All the Principal Minors of a Matrix.
Linear Algebra and its Applications, 419:107-124, 2006. [pdf]

K. Griffin and M. Tsatsomeros.
Principal Minors, Part II: The Principal Minor Assignment Problem.
Linear Algebra and its Applications, 419:125-171, 2006. [pdf]
The software associated with the above two papers can be found here.

M. Adam and M.J Tsatsomeros.
An Eigenvalue Inequality and Spectrum Localization fo Complex Matrices.
Electronic Journal of Linear Algebra, 15:239-250, 2006. [ps] [pdf] @ ELA.

P. Psarrakos and M. Tsatsomeros.
Bounds for Levinger's Function of Nonnegative Almost Skew-symmetric Matrices.
Linear Algebra and its Applications, 416:759-772, 2006. [pdf]

R.Edwards, J.J. McDonald, and M.J. Tsatsomeros.
On Matrices with Common Invariant Cones with Applications to Neural and Gene Networks.
Linear Algebra and its Applications, 398:37-67, 2005. [pdf]

V. Monov and M. Tsatsomeros.
On Reducing and Deflating Subspaces of Matrices.
Electronic Journal of Linear Algebra, 11 : 246-257, 2004. [ps] [pdf] @ ELA

P.J. Psarrakos and M.J. Tsatsomeros.
A Primer of Perron-Frobenius Theory for Matrix Polynomials.
Linear Algebra and its Applications, 393:333-352, 2004. [ps]

V. Monov and M. Tsatsomeros.
A Criterion for Reducibility of Matrices.
Cybernetics and Information Technologies, 4(2):60--68, 2004. [pdf]

J.J. McDonald, P.J. Psarrakos and M.J. Tsatsomeros.
Almost Skew-Symmetric Matrices.
Rocky Mountain Journal of Mathematics, 34:269-288, 2004. [pdf]

M. Tsatsomeros.
Generating and Detecting Matrices with Positive Principal Minors.
In Focus on Computational Neurobiology, Lei Li, Editor, pp. 115-132, Nova Science, New York, 2004. [pdf]

P.J. Psarrakos and M.J. Tsatsomeros.
The Perron Eigenspace of Nonnegative Almost Skew-Symmetric Matrices and Levinger's Transformation.
Linear Algebra and its Applications, 360:43-57, 2003. [ps] [pdf]

J.J. McDonald, D.D. Olesky, M.J. Tsatsomeros, and P. van den Driessche.
On the Spectra of Striped Sign Patterns.
Linear and Multilinear Algebra, 51:39-48, 2003. [pdf]

P.J. Psarrakos and M.J. Tsatsomeros.
Numerical Range: (in) a Matrix Nutshell, Parts 1 / 2.
Mathematical Notes from Washington State University, Vol 45, No. 2, 2002 / Vol 46, No. 1, 2003. [ps]

S.M. Fallat and M.J Tsatsomeros.
On the Cayley Transform of Positivity Classes of Matrices.
Electronic Journal of Linear Algebra, 9:190-196, 2002. [ps] [pdf] @ ELA.

P.J. Psarrakos and M.J. Tsatsomeros.
On the Stability Radius of Matrix Polynomials.
Linear and Multilinear Algebra, 50 : 151-165, 2002. [ps] [pdf]

J. Maroulas, P.J. Psarrakos, and M.J. Tsatsomeros.
Perron-Frobenius Type Results on the Numerical Range.
Linear Algebra and its Applications, 348 : 49-62, 2002. [pdf]

S. Kirkland, P.J. Psarrakos, and M.J. Tsatsomeros.
On the Location of the Spectrum of Hypertournament Matrices.
Linear Algebra and its Applications, 323 : 37-49, 2001. [pdf] [dvi]

M. Tsatsomeros.
Matrices with a Common Non-trivial Invariant Subspace.
Linear Algebra and its Applications, 322 : 51-59, 2001. [pdf] [dvi]

Contributing author: Dictionary of Algebra, Arithmetic and Trigonometry,
volume in the Comprehensive Dictionary of Mathematics,
Steven G. Krantz, Editor, CRC Press, Boca Raton, 2001.

T. Myers and M. Tsatsomeros.
  Potash Crystallization.
  Report in the Proceedings of the 1st Prairie Industrial Problem Solving Workshop,
  August 7-11, 2000, Brandon, Manitoba. [pdf]

J. Maroulas, P.J. Psarrakos, and M.J. Tsatsomeros.
Separable Characteristic Polynomials of Pencils and Property L.
Electronic Journal of Linear Algebra, 7 : 182-190, 2000. [ps] [pdf] @ ELA

G.Y. Lee, J.J. McDonald, B.L. Shader, and M.J. Tsatsomeros.
Extremal Properties of Ray-nonsingular Matrices.
Discrete Mathematics, 216 : 221-233, 2000. [pdf] [dvi]

M. Tsatsomeros.
Principal Pivot Transforms: Properties and Applications.
Linear Algebra and its Applications, 307 : 151-165, 2000. [pdf] [dvi]

M. Tsatsomeros and L. Li.
A Recursive Test for P-Matrices.
BIT Numerical Mathematics, 40(2) : 404-408, 2000. [pdf]

P. J. Psarrakos and M. J. Tsatsomeros.
On the Relation Between the Numerical Range and the Joint Numerical Range of Matrix Polynomials.
Electronic Journal of Linear Algebra, 6 : 20-30, 2000. [ ps] [ pdf] @ ELA

L. Han, M. Neumann, and M. Tsatsomeros.
Spectral Radii of Fixed Frobenius Norm Perturbations of Nonnegative Matrices.
SIAM Journal on Matrix Analysis and Applications, 21 : 79-92, 1999. [pdf] [dvi]

J.J. McDonald, R. Nabben, M. Neumann, H. Schneider, and M. Tsatsomeros.
Inverse Tridiagonal Z-Matrices.
Linear and Multilinear Algebra, 45 : 75-97, 1998. [pdf] [dvi]

J.J. McDonald, D.D. Olesky, H. Schneider, M.J. Tsatsomeros, and P. van den Driessche.
Z-Pencils.
Electronic Journal of Linear Algebra, 4 : 32-38, 1998. [ ps] [ pdf] @ ELA

M. Tsatsomeros.
Sign Controllability: Sign Patterns That Require Complete Controllability.
SIAM Journal on Matrix Analysis and Applications, 19 : 355-364, 1998. [pdf] [dvi]

B. Li, L. Li, M. Harada, H. Niki, and M. Tsatsomeros.
An Iterative Criterion for H-matrices.
Linear Algebra and Its Applications, 271 : 179-190, 1998. [pdf] [dvi]

J.J. McDonald, D.D. Olesky, M. Tsatsomeros, and P. van den Driessche.
Ray Patterns of Matrices and Nonsingularity.
Linear Algebra and its Applications, 267 : 359-373, 1997. [pdf] [dvi]

B. Li and M. Tsatsomeros.
Doubly Diagonally Dominant Matrices.
Linear Algebra and its Applications, 261 : 221-235, 1997. [pdf] [dvi]

S. Kirkland, J.J. McDonald, and M. Tsatsomeros.
Sign Patterns that Require Positive Eigenvalues.
Linear and Multilinear Algebra, 41 : 199-210, 1996. [pdf] [dvi]

J.J. McDonald, M. Neumann, H. Schneider, and M. Tsatsomeros.
Inverses of Unipathic M-Matrices.
SIAM Journal on Matrix Analysis and Applications, 17 : 1025-1036, 1996. [pdf] [dvi]

C.R. Johnson, M. Neumann, and M. Tsatsomeros.
Conditions for the Positivity of Determinants.
Linear and Multilinear Algebra, 40 : 241-248, 1996. [pdf] [dvi]

C.R. Johnson and M. Tsatsomeros.
Convex Sets of Nonsingular and P-Matrices.
Linear and Multilinear Algebra, 38 : 233-239, 1995. [pdf] [dvi]

J.J. McDonald, M. Neumann, H. Schneider, and M. Tsatsomeros.
Inverse M-Matrix Inequalities and Generalized Ultrametric Matrices.
Linear Algebra and its Applications, 220 : 321-341, 1995. [pdf] [dvi]

C.R. Johnson, D.D. Olesky, M. Tsatsomeros, and P. van den Driessche.
An Identity for the Determinant.
Linear and Multilinear Algebra, 36 : 189-194, 1994. [pdf] [dvi]

D.D. Olesky, M. Tsatsomeros, and P. van den Driessche.
Qualitative Controllability and Uncontrollability by a Single Entry.
Linear Algebra and its Applications, 187 : 183-194, 1993. [pdf] [dvi]

M. Tsatsomeros, J.S. Maybee, D.D. Olesky, and P. van den Driessche.
Nullspaces of Matrices and Their Compounds.
Linear and Multilinear Algebra, 34 : 291-300, 1993. [pdf] [dvi]

C.R. Johnson, D.D. Olesky, M. Tsatsomeros, and P. van den Driessche.
Spectra with Positive Elementary Symmetric Functions.
Linear Algebra and its Applications, 180 : 247-262, 1993. [pdf] [dvi]

J.S. Maybee, D.D. Olesky, M. Tsatsomeros, and P. van den Driessche.
Combinatorial Eigenvalues of Matrices.
Linear Algebra and its Applications, 175 : 213-224, 1992. [pdf] [dvi]

M. Neumann and M. Tsatsomeros.
Symbiosis Points for Linear Differential Systems.
Linear and Multilinear Algebra, 30 : 49-59, 1991. [pdf] [dvi] [references]

M. Neumann, R.J. Stern, and M. Tsatsomeros.
The Reachability Cones of Essentially Nonnegative Matrices.
Linear and Multilinear Algebra, 28 : 213-224, 1991. [pdf] [dvi] [references]

R.J. Stern and M. Tsatsomeros.
Extended M-Matrices and Subtangentiality.
Linear Algebra and its Applications, 97 : 1-11, 1987. [pdf]

PRESENTATIONS

Spectrum localization for almost skew-symmetric matrices (BIRS, Banff 2003).

Generating and detecting matrices with positive principal minors (ILAS, Auburn 2002).

Since Ancient Greece (A power point presentation on two "modern" era Greek mathematicians).

PROFESSIONAL ACTIVITIES

Editorship

Associate Editor of Linear Algebra and its Applications (2004-2007).
Associate Editor and Associate Managing Editor of Electronic Linear Algebra.
Associate Editor of Advances in Algebra.
Member of the Editorial Board of Asian Information-Science-Life : An International Journal (2002-2003). Published by Nova Science Publishers.
Editor of Linear Algebra and Its Applications, Vol 341, Issues 1-3, pp. 1-420, January 15, 2002. Dedicated to Tsuyoshi Ando in recognition of his 70th birthday.
Editor of Linear Algebra and Its Applications, Volume on Positivity in Linear Algebra.
Editor of Linear Algebra and Its Applications. Volume dedicated to Pauline van den Driessche.

Curriculum Vitae Michael Tsatsomeros