Prof. Ing. Jirí GREGOR, DrSc.
Email: gregorj@math.feld.cvut.cz
Research interests:
Discrete dynamical systems with several independent variables with emphasis
on difference equations with several independent variables. Qualitative
properties of their solutions, mainly for the linear case, and their applications
in multidimensional systems theory, in processing multidimensional discrete
signals, in numerical solutions of partial differential equations, and
in analysis of other models in finite and discrete mathematics.
Recent publications

J. Gregor, "On the singular FornasiniMarchesini model of 2D discrete
systems," IEEE Trans. Autom. Control, (1992), No. 5, 636639. ¸

J. Gregor, "Discrete ndimensional dynamical systems," In Workshop 92,
Part A. Prague : Czech Technical University,1992, p. 2122

J. Gregor, "Functional transforms in multidimensional systems theory,"
In Cybernetics and Systems Rescarch, Singapore : World Scientific,1992,
p. 197204

J. Gregor, "Stability of nonconvolutional nD systems," In Proc. 2nd IFAC
Workshop
on. System Structure and Control, Prague : UTIA CSAV, 1992. p. 404408

J. Gregor, "On convex hulls of polynomials," InCircuit Theory and Design
`93, Herve Dedieu. Amsterdam, Elsevier,1993, p. 16671680

J. Gregor, "On implicit linear systems," In Proc. IEEE Mediterranean
Sym. on Control Theory and Applications, Chanina : IEEE Control Syst.
Soc. 1993, T3.2, p. 14

J. Gregor, "Singular systems of partial difference equations," Multidimensional
Systems and Signal Processing, No. 4 (1993), p. 6782

J. Gregor and E. Krajnik"Discrete ndimensional dynamical systems,"
In
CTU Seminar 94, Part A. Prague : Czech Technical University,1994, p.
4546.

J. Gregor " Computers and Mathematical Reasoning in Education,"
In Proceedings of 8th SEFI. Prague : 1995

J. Gregor " Periodic nD Linear Discrete Systems, " In Proceedings
of the European Control Conference, Roma : EUCI. 1995. p. 17501753.

J. Gregor and J.Tiser " On Convex Combinations of Hurwitz Polynomials",
Appl. Math and Comp. Sci, 1996, vol.6 No.1, p. 3347.

J. Gregor " On the Design of Positive Real Functions", IEEE Trans.
on Circ. and Systems, Part I , Vol 43, No 11, pp. 945947, Nov.1996

N.K. Bose and J.Gregor "Invariance of Stability Property of Hadamard
and Szego Product Polynomials", J.Franklin Just., Vol.334B, No.1, pp.4146,
1997

J.Gregor and A.Nemecek "The Impact of MATHEMATICA(R) on Mathematical
Education, 2nd, IMS'97, Rovaniemi, Finland

J.Gregor " A Formal Approach to Discrete Systems Theory", Journal
of Applied Mathematics and Computer Science, 1997, Vol.7, No.4.

J.Gregor and J.Veit " Partial Difference Equations: Cauchy Problem and
Fundamental Solutions", In Proceedings of 3th International Conference
on Difference Equations and Applications, Taipei, Rep. of China, 1997

J.Gregor and J.Tišer "On Hadamard Powers of Hurwitz Polynomials",
Math. of Control, Signals, and Systems , 1998, No.11. pp.372378

J.Gregor " The Cauchy Problem for Partial Difference Equations
", Acta Appl.Math., 1998, Vol.53., No.3. pp.247263.

J.Gregor "Towards a General Theory of Discrete Systems",
in P.M. Frank (Editor) Advances in Control, Springer
Verlag, London, 1999.

J.Gregor " Difference Equations and nD discrete Systems " In: Proceedings
of the Fifteenth International Symposium on Mathematical Theory of Networks
and Systems [CDROM] . Notre Dame : University of Notre Dame, 2002,

J.Gregor " Continued Fractions and 2D Hurwitz Polynomials" .In: Multidimensional
Systems and Signal Processing. 2002, vol. 13, no. 2, p. 187199. ISSN 09236082.

J. Gregor "Stability of NonConvolutional nD Linear Systems", Trans. IEEE
Circuits & Systems, I , 2002,Vol.19, No.12,December, pp.17731781

J.Gregor "Partial difference equations and the maximum principle",
WSEAS Trans.on Math, Issue I, Vol.3, January 2004, pp.192197

J.Gregor "The maximum principle and growth estimates for partial
difference equations", Aequationes Mathematicae, Vol.79
(2006),pp.8699