PUBLICATIONS

 

Ph. D. Thesis

 

N. P. Karampetakis, Notions of Equivalence for Linear Time Invariant Multivariable Systems., Ph. D. Thesis (No. 15), Department of Mathematics, Aristotle University of Thessaloniki, Thessaloniki, Greece.

 

 

Papers published in International Journals

 

1)        Karampetakis N.P. and Vardulakis A.I.G., 1992, Matrix fractions and full system equivalence., IMA Journal of Mathematical Control and its Information, 9, 147-160.

 

2)        Karampetakis N.P. , Pugh A.C. and Vardulakis A.I.G. , 1994, Equivalence transformations of rational matrices and applications., International  Journal of Control, 59, ÍÏ.4, 1001-1020.

 

3)        Pugh A.C. , Karampetakis N.P., Hayton G.E. and Vardulakis A.I.G., 1994, A fundamental notion of equivalence for Linear Multivariable Systems, IEEE Trans. on Auto. Control, ÁC-39, ÍÏ.5, Ìay 1994, pp.1141-1145.

 

4)        Karampetakis N.P., Mertzios B.G. and Vardulakis A.I.G. , 1994, Computation of the transfer function matrix and its Laurent expansion of generalized two-dimensional systems., International Journal of Control, Vol.60, NO.4, pp.521-541.

 

5)        Karampetakis N.P. and Vardulakis A.I.G., 1993, Generalized state-space system matrix equivalents of a Rosenbrock system matrix., IMA Journal of Mathematical Control and its Information, NO.10, pp.323-344.

 

6)        Pugh A.C., Karampetakis N.P., Hayton G.E. and Vardulakis A.I.G. , 1993,  On a certain McMillan degree condition appearing  in control, IMA Journal of Mathematical Control and its Information, NO.10, pp.361-373.

 

7)        Karampetakis N.P., Pugh A.C., Vardulakis A.I.G. and Hayton G.E., 1994, Structural properties of square inverse linear systems.,  Kybernetica, Vol.30, NO.6, pp.597-606.

 

8)        Karampetakis N.P., Pugh A.C. and Vardulakis A.I.G., 1996, An extension of the Wolovich's definition of equivalence., IEEE Trans. on Auto. Control, Vol.41, No.2, pp.228-232.

 

9)        Karampetakis N. P., Vardulakis A. I. G. and A.C. Pugh, 1995, A classification of generalised state space reduction methods for linear multivariable systems. Kybernetika, Vol.31, NO.6, pp.547-557.

 

10)      Karampetakis N.P., 1997, Computation of the generalised inverse of a polynomial matrix and applications., Linear Algebra and its Applications, 252, pp.35-60.

 

11)      Karampetakis N.P., 1996, Comments on “Computation of the inverse of a polynomial matrix and evaluation of its Laurent expansion Int. J. Control, Vol. 64, NO. 3, pp.563-565.

 

12)      Jones J., Karampetakis N. P. and Pugh A.C., 1998, The computation and application of the generalised inverse via MAPLE., Journal of Symbolic Computation, Vol. 25, No.1, pp.99-124.

 

13)      Karampetakis N.P., 1997, Generalised inverses of two variable polynomial matrices and applications. Circuit Systems & Signal Process, 16, No.4, pp.439-453.

 

14)        Karampetakis N.P., Pugh A.C. and Hayton G.E., 1997, Notes on a hierarchical theory of systems., Kybernetica, 33, No.2, pp.185-201.

 

15)      Karampetakis N.P., 1997, Comments on “Reachability of polynomial matrix descriptions (PMDs)”. Circuits Systems & Signal Processing. 16, No.5, pp.559-568.

 

16)      Mahmood S., Pugh A.C., Karampetakis N. P.  and Hayton G.E., 1998, Structural properties of column (row) reduced MFDs, International Journal of Control, 69, No.1, pp.111-130.

 

17)        Mahmood S., Karampetakis N. P. and Pugh A.C., 1998, Solvability, reachability and controllability of regular PMDs, International Journal of Control., 70, No.4, pp.617-630.

 

18)        Antoniou S., Vardulakis A.I. and Karampetakis N.P., 1998, A spectral characterization of the behavior of discrete time AR-representations over a finite time interval., Kybernetica, 34, NO.5, pp.555-564.

 

19)        Karampetakis N. P., Jones J. and Antoniou S., 2001, Forward, backward and symmetric solutions of discrete ARMA-representations, Circuit Systems & Signal Process, Vol.20, No.1, pp.89-109..

 

20)        Karampetakis N.P., Pugh A.C. and Hayton G.E., 1998, The output zeroing problem for general polynomial descriptions., International Journal of Control, 71, NO.6, pp.1069-1086.

 

21)        P. Tzekis, N. P. Karampetakis and A.I. Vardulakis, 1999, On the division of polynomial matrices, IMA Journal of Control and its Information, Vol.16, Issue 4, pp.391-401.

 

22)        Karampetakis N. P. And Vardulakis A.I., 2000, On the reduction of a polynomial matrix model of a linear multivariable system to generalized state space form., IMA Journal of Control and its Information, 17, pp.1-42

 

23)        Vardulakis A.I.G., Antoniou S. and Karampetakis N. P., 1999, On the solution and impulsive behavior of polynomial matrix descriptions of free linear multivariable systems, Int. J. Control, 72, NO.3, pp.215-228.

 

24)        N. P. Karampetakis and P. Tzekis, 2001, On the computation of the inverse of a polynomial matrix, IMA Journal of Control and its Information, 18, pp.1-15.

 

25)        J. Jones, N. P. Karampetakis and A.C. Pugh, 2002, Solution of discrete ARMA-representations via MAPLE, Applied Mathematics and Computation, 139, Issues 2-3, July 15, 2003, pp.437-489..

 

26)        N. P. Karampetakis and S. Vologiannidis, 2002, DFT calculation of the generalized and drazin inverse of a polynomial matrix, to appear in the Journal of Applied Mathematics and Computation.

 

27)        N. P. Karampetakis, 2004, Descriptor realizations of autoregressive AR-representations, IMA Journal of Control and its Information, 21, 207-221.

 

28)        N. P. Karampetakis, 2004, On the discretization of singular systems, IMA Journal of Control and its Information, 21, 223-242.

 

29)        N. Karampetakis and S. Vologiannidis, 2003, Infinite elementary divisor structure-preserving transformations for polynomial matrices, International Journal of Applied Mathematics and Computer Science, Vol.13, No.4, pp.101-111.

 

30)        S. Vologiannidis and N. P. Karampetakis, 2003, Inverses of multivariable polynomial matrices by discrete Fourier-transforms, to appear in Multidimensional Systems and Signal Processing.

 

31)        N. P. Karampetakis, 2004, On the solution space of discrete time AR-representations over a finite time horizon, Linear Algebra and its Applications, 382, 83-116.

 

32)        N. Karampetakis, S. Vologiannidis and A.I. Vardulakis, 2003, On a new equivalence for polynomial matrices, International Journal of Control, Vol.77, No.6, pp.584-597.

 

33)             N. P. Karampetakis and P. Tzekis, 2005, On the computation of the minimal polynomial of a polynomial matrix, International Journal of Applied Mathematics and Computer Science,Vol.15, No.3.

 

34)      N. P. Karampetakis and A.I.G. Vardulakis, 2006, Special Issue on the Use of Computer Algebra Systems for Computer Aided Control Systems Design, International Journal of Control, Vol.79, No.11, pp.1313-1320.

 

35)      Stanimirović, P., Tasić, M., Krtolica, P and Karampetakis, N.P., 2007, Generalized inversion by interpolation, Filomat, Vol 21:1, 67–86.

 

36)      Predrag S. Stanimirović, N. P. Karampetakis and Milan B. Tasić, 2007, Computing generalized inverses of a rational matrix and applications, Journal of Applied Mathematics and Computing, Vol.24, No.1-2, pp.81-94.

 

37)      N. P. Karampetakis, Predrag S. Stanimirović and Milan B. Tasić, 2007, On the computation of the Drazin inverse of a polynomial matrix, Vol.26, Issue 1, pp. 1-255, Far East Journal of Mathematical Sciences.

 

38)      A. C. Pugh, E. N. Antoniou, N. P. Karampetakis, 2007, Equivalence of AR-representations in the light of the impulsive-smooth behaviour, International Journal of Robust and Nonlinear Control (Special issue for Polynomial Design Methods, Edited by Michael Sebek and Martin Hromcik), Vol.17, Issue 8, pp. 769-785.

 

39)      P. Tzekis, N. P. Karampetakis and H. Terzidis, 2007, On the computation of the GCD of 2-D polynomials, International Journal of Applied Mathematics and Computer Science, Vol.17, No.4, pp. 463-470.

 

40)      N. P. Karampetakis, 2007, On the solution of the implicit Roesser model, Vol.55, Issue 4, pp. 365-378.

 

41)      A.I.G. Vardulakis, N.P. Karampetakis, E.N. Antoniou and Evangelia Tictopoulou, 2009, On the Realization Theory of Polynomial Matrices and the Algebraic Structure of Pure Generalized State Space Systems, International Journal of Applied Mathematics and Computer Science, Vol. 19,  Issue: 1,  pp. 77-88.

 

42)      N. P. Karampetakis and S. Vologiannidis, 2009, On the fundamental matrix of the inverse of a polynomial matrix and applications to ARMA representations, Linear Algebra and Its Applications, Vol.431, pp. 2261-2276.

 

43)      N.P. Karampetakis, E.N. Antoniou, A.I.G. Vardulakis, and S. Vologiannidis, 2009, Symbolic Computations on Rings of Rational Functions and Applications in Control Engineering, Computer Aided Systems Theory – EUROCAST 2009, Lecture Notes in Computer Sciences Vol.5717/2009, Editors : Roberto Moreno –Diaz, Franz Pichler and Alexis Quesada-Arencibia, 12th International Conference, Las Palmas de Gran Canaria, Spain, February 2009, Revised selected papers, Springer Berlin/Heidelberg 2009, pp.587-594.

 

44)      N. P. Karampetakis, 2010, Matrix Pencil Equivalents of Symmetric Polynomial Matrices, Special Issue: Recent Developments in Multidimensional Systems, Control and Signals—Theory and Applications, Asian Journal of Control, Vol.12, No.2.

 

45)      Nicholas P. Karampetakis · Alexandros Evripidou, 2011, On the computation of the inverse of a two-variable polynomial matrix by interpolation, Multidim Syst Sign Process, DOI 10.1007/s11045-010-0102-7.

Papers presented in International Conferences

1)        Karampetakis N.P. and Vardulakis A.I.G., 1991, Polynomial matrices and equivalent singular pencils., presented in Workshop on Singular Systems organized by N. Karcanias, City University, December 1991.

2)        Karampetakis N.P., Pugh A.C. and Vardulakis A.I.G., 1992, Equivalence transformations of rational matrices. Proceedings of the Second IFAC Workshop on Systems Structure and Control, Prague 3-5 September 1992, PERGAMON PRESS, pp.40-43.

3)        Pugh A.C., Karampetakis N.P., Hayton G.E. and Vardulakis A.I.G. , 1993, On a fundamental notion of equivalence in Linear Systems Theory, Proceedings of the Second IFAC Workshop on Systems Structure and Control, Prague 3-5 September 1992, PERGAMON PRESS, pp.356-359.             

4)        Pugh A.C., Karampetakis N.P., Hayton G.E. and Vardulakis A.I.G., 1992,  Interpretation of a certain McMillan degree condition appearing  in control., Proceedings of Sixth IMA Conference on Control : Modelling, Computation, Information, U.M.I.S.T., 2-4 September 1992.

5)        Karampetakis N.P. and Vardulakis A.I.G., 1992, On the solution space of  singular state-space AR-representations., Proceedings of International Symposium on Implicit and Nonlinear Systems, pp.191-196, 14-15 December 1992, Fort Worth, Texas.

6)        Pugh A.C. , Karampetakis N.P., Hayton G.E. and Vardulakis A.I.G., 1992, A fundamental notion of equivalence for Linear Multivariable Systems., regular paper in the Proceedings of the 31rst IEEE Conference on Decision and Control, pp.151-156, Vol.1, Tuscon, Arizona, December 16-18, 1992.

7)        Karampetakis N.P., Mertzios B.G. and Vardulakis A.I.G., 1993, Generalized models of 2-D linear discrete systems and computation of its transfer function matrix., Proceedings of the Second European Control Conference, pp.1490-1494, June 28-July 1, 1993, Groningen, The Netherlands.

8)        Karampetakis N.P. and Vardulakis A.I.G., 1993, On the behaviour of  discrete-time AR-representations., Proceedings of the 1rst IEEE Mediterranean Symposium on New Directions in Control Theory and Applications, June 21-23, 1993, Chania, Crete, Greece.

9)        Karampetakis N.P., Pugh A.C., Vardulakis A.I.G. and Hayton G.E., 1993, Structural properties of square inverse linear systems., Proceedings of the 1rst IEEE Mediterranean Symposium on New Directions in Control Theory and Applications, June 21-23, 1993, Chania, Crete, Greece.

10)      Karampetakis N.P. and Vardulakis A.I.G., 1993, On the behaviour of  continuous-time AR-representations., Proceedings of the Second European Control Conference, June 28-July 1, 1993, Groningen, The Netherlands, pp.1784-1789.

11)      Karampetakis N.P., Pugh A.C. and Vardulakis A.I.G., 1993, An extension of the Wolovich's definition of equivalence., Proceedings of  the 32nd IEEE Conference on Decision and Control, December 15-17, 1993,  pp.2389-2394, Vol.3.

12)      Pugh A.C., Karampetakis N.P., Vardulakis A.I.G. and Hayton G.E., 1994, Observations on the notion of minimality in the generalized state space systems., Proceedings of the 2nd IEEE Mediterranean Symposium on New Directions in Control Theory and Applications, pp.592-599, June 19-22, 1994,  Chania, Crete, Greece.

13)      Karampetakis N.P., Pugh A.C., Vardulakis A.I.G. and Hayton G.E., 1994, Generalized state space representations for linear multivariable systems., Proceedings of the 2nd IEEE Mediterranean Symposium on New Directions in Control Theory and Applications, pp.209-216, June 19-22, 1994,  Chania, Crete, Greece.

14)      Karampetakis N.P., Pugh A.C., and Hayton G.E., 1995, Notes on a hierarchical theory of systems., Proceedings of the 3rd IEEE Mediterranean Symposium on New Directions in Control Theory and Applications, pp.135-142, Limassol, Cyprus, July 11-13, 1995.

15)      Karampetakis N.P., and Vardulakis A.I., 1995, On the solution of ARMA-representations., Proceedings of the 3rd IEEE Mediterranean Symposium on New Directions in Control Theory and Applications, pp.156-163, Limassol, Cyprus, July 11-13, 1995.

16)      Karampetakis N. P. and Vardulakis A.I.G., On the reduction of a polynomial matrix model of a linear multivariable system to generalised state space form., Proceedings of the EURACO Workshop on "Recent Results in Robust and Adaptive Control", 11-14th September, 1995, Florence, Italy, pp.65-92.

17)      Pugh A.C., Karampetakis N.P., Mahmood S. and Hayton G.E., 1995, On the admissible initial conditions of a regular PMD., Proceedings of the 34th IEEE Conference on Decision and Control, pp.307-308, Vol.1, December 13-15, 1995, New Orleans, Louisiana.

18)      Karampetakis N.P., Pugh A.C. and Hayton G.E., 1995, The output zeroing problem for general polynomial descriptions., Proceedings of the 34th IEEE Conference on Decision and Control, pp.3194-3199, Vol.3, December 13-15, 1995, New Orleans, Louisiana.

19)      Jones J., Karampetakis N.  and Pugh A.C., 1995, An algorithm for the computation of the generalised inverse of a rational matrix., Internal Report, Department of Mathematical Sciences, Loughborough University of Technology, U.K.

20)      Jones J., Karampetakis N. P.  and Pugh A.C., 1996, Some applications of MAPLE in Linear Systems Analysis, Proceedings of the IEE Colloquium on “Symbolic Computation for Control”, pp.7/1-7/5, London, 2 April, 1996.

21)      Jones J., Karampetakis N. P.  and Pugh A.C., 1996, Solution of discrete ARMA-representations via MAPLE, presented in a Poster Session of the EURACO Network (EUropean Robust and Adaptive COntrol Network), Algarve, Portugal, 13-17 May 1996.

22)      Karampetakis N. P., Jones J. and Antoniou S., 1996, Forward, backward and symmetric solutions of discrete ARMA representations., presented in a Poster Session of the EURACO Network (EUropean Robust and Adaptive COntrol Network), Algarve, Portugal, 13-17 May 1996.

23)      Mahmood S., Karampetakis N. P.  and Pugh A.C., 1996, On the information carried by column (row) reduced MFDs, Proceedings of the 4rth IEEE Mediterranean Symposium on New Directions in Control and Automation, pp. 119-124, June 10-14, 1996, Chania, Greece.

24)      Tzekis P., Karampetakis N.P.  and Vardulakis A.I., 1996, Solutions of Diophantine equations over rings via MAPLE, Proceedings of the 4rth IEEE Mediterranean Symposium on New Directions in Control and Automation, June 10-14, 1996, Chania, Crete.

25)      Karampetakis N. P., 1996, Generalized inverses of two variable polynomial matrices and applications., Proceedings of the 4rth IEEE Mediterranean Symposium on New Directions in Control and Automation, pp.220-225, June 10-14, 1996, Chania, Crete.

26)      Tzekis P., Karampetakis N. P., and Vardulakis A.I., 1996, On the division of polynomial matrices., Proceedings of the 4rth IEEE Mediterranean Symposium on New Directions in Control and Automation, pp.125-129, June 10-14, 1996, Chania, Crete.

27)      Mahmood S., Karampetakis N. P.  and Pugh A.C., 1996, Structural properties of regular PMDs., Proceedings of the International Symposium on on the Mathematical Theory of Networks and Systems, St. Louis, Missouri, June 24-28, 1996.

28)      Jones J., Karampetakis N. P.  and Pugh A.C., 1996, An algorithm for the computation of the generalized inverse and its implementation via MAPLE., Proceedings of the International Symposium on on the Mathematical Theory of Networks and Systems, St. Louis, Missouri, June 24-28, 1996.

29)      Jones J., Karampetakis N. P.  and Pugh A.C., 1996, Solution of an ARMA-Representation via its boundary mapping equation., Proceedings of the International Symposium on on the Mathematical Theory of Networks and Systems, St. Louis, Missouri, June 24-28, 1996.

30)      Jones J., Karampetakis N. P.  and Pugh A.C., 1996, Computation of the generalised inverse of a rational matrix via MAPLE and applications., Proceedings of the IEEE Symposium on Computer-Aided Control System Design, pp.495-500, Deadborn, Michigan, USA, September 15-18, 1996.

31)         Karampetakis N. P., Mahmood S., Pugh A.C. and Hayton G.E., 1996, A characterization of admissibility of the initial conditions of nonregular AR-representations., Proceedings of the 35th IEEE Conference on Decision and Control, pp.4242-4243, Vol.4, June 30-July 5, 1997, Cobe, Japan.

32)      Karampetakis N. P., Jones J.  and Antoniou S., 1997, Forward, backward and symmetric solutions of discrete time ARMA-representations, Proceedings of the 4rth European Control Conference, 1-4 July, 1997, Brussels, Belgium.

33)      Karampetakis N. P., Pugh A.C., 1997, A fundamental notion of equivalence for AR-representations, Proceedings of the 4rth European Control Conference, 1-4 July, 1997, Brussels, Belgium (Mathematical Report No.A271, Department of Mathematical Sciences, Loughborough University of Technology, U.K.)

 

34)      J. Jones, P. Tzekis and N. P. Karampetakis, 1997, The use of MAPLE in linear systems analysis and synthesis., Proceedings of the 4rth European Control Conference, 1-4 July, 1997, Brussels, Belgium.

35)    A. I. G. Vardulakis, S. N. Antoniou and N. P. Karampetakis, 1997, A spectral characterization of the behavior of discrete time AR-Representations over a finite time interval,  Proceedings of the 4rth European Control Conference, 1-4 July, 1997, Brussels, Belgium.

 

36. Antoniou S., Karampetakis N. and Vardulakis A. I., 1997, A classification of the solution of non-regular, discrete time descriptor systems., regular paper in the 36th IEEE Conference on Decision and Control, pp.3156-3161, Vol.4, December 10-12, 1997, San Diego, California, U.S.A..

37. N. P. Karampetakis and P. Tzekis, 1998, Notes on the computation of the inverse of a polynomial matrix, 6th IEEE Mediterranean Conference on Control & Automation, Alghero, Sardinia, Italy, June 9-11, 1998.

38. Karampetakis N.P., 1998, Descriptor realizations of AR-Representations, 5th European Control Conference.

39. Karampetakis N.P. and Tzekis P., 1999, Symbolic manipulation of rational matrices and applications, CACSD’99, pp.315-320, August 22-27, 1999, Kohala Coast, HI, USA.

40. P. Stanimirovic and N. P. Karampetakis, 2000, Symbolic implementation of Leverrier-Faddeev algorithm and applications., 7th IEEE Mediterranean Conference on Control & Automation, Patra, Greece.

41. P. Tzekis, N.P. Karampetakis and A.I.G. Vardulakis , 2001, RATRIX : A RATional matRIX calculator for computer aided analysis and synthesis of linear multivariable control systems, KTISIVIOS, National Conference on Automation, Robotics and Industrial Production, Santorini, June 28-30, 2001.

42. N. P. Karampetakis and P. Stanimirovic, 2001, On the computation of the Drazin inverse of a polynomial matrix, 1rst IFAC Symposium on System Structure and Control, August 29-31, 2001, Prague, Czech Republic.

43. N. P. Karampetakis, 2001, On a new notion of equivalence of polynomial matrices, 1rst IFAC Symposium on System Structure and Control, August 29-31, 2001, Prague, Czech Republic.

44. N. P. Karampetakis, 2002, On the construction of the forward and backward solution space of a discrete time AR-Representation, 15th IFAC World Congress 2002.

45. N. P. Karampetakis, 2002, On the determination of the dimension of the solution space of a discrete time AR-Representation, 15th IFAC World Congress 2002.

46. N. P. Karampetakis, S. Vologiannidis and A.I. Vardulakis, 2002, Notions of equivalence for discrete time AR-representations, 15th IFAC World Congress 2002.

47. N. P. Karampetakis and S. Vologiannidis, 2002, DFT calculation of the generalized and drazin inverse of a polynomial matrix, IEEE Conference on Computer Aided Control System Design CACSD’02, pp.266-271, Glasgow, Scotland, 18-20 September 2002.

48. N. P. Karampetakis and S. Vologiannidis, 2002, Infinite elementary divisor structure-preserving transformations for polynomial matrices, 8th IEEE International Conference on Methods and Models in Automation and Robotics, Szczecin, Poland, 2-5 September, 2002.

49. A.I. Vardulakis, N.P. Karampetakis, E. Antoniou, P. Tzekis and S. Vologiannidis, 2003, A descriptor package for Mathematica, 11th Mediterranean Conference on Control and Automation, 18-20 June 2003, Rhodes, Greece.

50.  N. P. Karampetakis and S. Vologiannidis, 2003, Inverses of multivariable polynomial matrices by discrete Fourier transforms, European Control Conference 2003, Cambridge, 1-4 September 2003, U.K.

51. N. P. Karampetakis and S. Vologiannidis, 2004, On the fundamental matrix of the inverse of a polynomial matrix and applications, 12th IEEE Mediterranean Conference on Control and Automation, June 6-9, 2004, Kusadasi, Turkey.

52. P. Kujan, M. Hromcik, M. Sebek, N.P. Karampetakis, E.N. Antoniou and S. Vologiannidis, 2004, Effective computations with 2-variable polynomial matrices in MATHEMATICA,  12th IEEE Mediterranean Conference on Control and Automation, Kusadasi, Turkey, June 6-9, 2004.

53. P. Stanimirovic, P. Krtolica, N. Karampetakis, 2003 Using the Interpolation in Computing Generalized Inverses of a Polynomial Matrix, 4th Conference on Informatics and Information Technology – CiiT 2003, Bitola, F.Y.R.O.M..

54. A.C. Pugh, E. Antoniou and N. P. Karampetakis, Equivalence of AR-Representations in the Light of the Impulsive-Smooth Behavior, Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference, pp.1547-1552, December 12-15, 2005, Seville, Spain.

55. E.N. Antoniou, S. Vologiannidis, N. Karampetakis, “Linearizations of polynomial matrices with symmetries and their applications”, Proc. of the Joint 2005 International Symposium on Intelligent Control & 13th Mediterranean Conference on Control and Automation (2005 ISIC-MED), pp.159-163, June 2005, Limassol, Cyprus.

56. N. P. Karampetakis, 2005, On the solution of the implicit Roesser model, Proceedings of the 13th Mediterranean Conference on Control and Automation, pp.164-169, Limassol, Cyprus, June 27-29, 2005.

57. N. P. Karampetakis, 2005, On the solution of the general singular model of 2-D systems, Proceedings of the 16th IFAC World Congress 2005, Praha, Czech Republic, July 4-8, 2005.

58. P. Tzekis and N. P. Karampetakis, 2005, On the computation of the minimal polynomial of a two-variable polynomial matrix, Proc. Of the 4rth International Workshop on Multidimensional (nD) Systems, pp.83-89,, July 10-13, 2005, University of Wuppertal, Wuppertal, Germany.

59. A.C.Pugh, G.E. Hayton, E.M.O. EL-Nabrawy and N. P. Karampetakis, 2006, Numerator-Denominator Structures of n-D MFDs, Proc. of the 14th Mediterranean Conference on Control and Automation (MED’06), June 2006, Ancona, Italy.

60. M.S. Boudellioua and N.P. Karampetakis, 2006, Zero-Coprime System Equivalence of Singular 2-D Linear Models, Proc. of the 14th Mediterranean Conference on Control and Automation (MED’06), June 2006, Ancona, Italy.

61. N. P. Karampetakis, 2006, An equivalent reduction of a 2-D symmetric polynomial matrix, Proc. Of the IEEE international Symposium on Computer Aided Control Systems Design (CACSD’06), pp.385-390, October 4-6, 2006, Munich, Germany.

62. P. Tzekis, N. P. Karampetakis and H.K. Terzidis, On the computation of the GCD (LCM) of 2-D polynomials, European Control Conference, Kos, Greece, July 2-5, 2007.

63. A.I.G. Vardulakis, N. P. Karampetakis and E. Antoniou, On the realization theory of polynomial matrices and the algebraic structure of pure generalized state space systems, European Control Conference, Kos, Greece, July 2-5, 2007.

64. Dimitris Varsamis and Nicholas P. Karampetakis , PolyxGui : A new Graphical User Interface (GUI) for the Polynomial Toolbox POLYX., to appear in the 16th Mediterranean Conference on Control and Automation (MED’08), June 25-27, 2008, Ajaccio, Corsica, France,  (program).

65. A.I. Vardulakis, N.P. Karampetakis, E. Antoniou and S. Vologiannidis, Descriptor Systems Toolbox : A Mathematica-Based Package for Descriptor Systems, 9th IEEE International Symposium on Computer-Aided Control System Design (CACSD), September 3-5, 2008, San Antonio, Texas (USA).

 

66. N. P. Karampetakis and A. Grigoriadou, 2011, On a first order hold discretization for singular systems, 2011 International Conference on Communications, Computing and Control Applications (CCCA’11), March 3-5, 2011, Hammamet, Tunisia.

 

67. D. Varsamis and N. P. Karampetakis, 2011, On the Newton multivariate polynomial interpolation with applications, 7th International Workshop on Multidimensional (nD) Systems, September 5-7, 2011, Poitiers, France.