|
|
| (16 intermediate revisions by one other user not shown) |
| Line 1: |
Line 1: |
| ; '''Address:'''
| | #REDIRECT [[Dr. Christos Kravvaritis]] |
| : TU München
| |
| : Institut für Informatik
| |
| : Boltzmannstr. 3
| |
| : 85748 Garching b. München
| |
| ; '''Office:'''
| |
| : MI 02.05.036
| |
| ; '''Email:'''
| |
| : christos.kravvaritis@in.tum.de
| |
| ; '''Phone:'''
| |
| : (089) 289 18 615
| |
| ; '''Fax:'''
| |
| : (089) 289 18 607
| |
| ; '''Personal Homepage:'''
| |
| : [http://ckravv.googlepages.com http://ckravv.googlepages.com]
| |
| ; '''Office Hours'''
| |
| : By arrangement
| |
| <HR>
| |
| == Forschungsgebiete (Research Area) ==
| |
| * Numerische Lineare Algebra
| |
| * Multigridverfahren
| |
| * Strukturierte Matrizen (Hadamard, weighing, compound)
| |
| * Determinanten
| |
| * Numerische Methoden für ODEs und PDEs
| |
| * Codierungstheorie
| |
| <HR>
| |
| == List of Publications==
| |
| '''Refereed Publications'''
| |
| | |
| : C. Kravvaritis and M. Mitrouli, The growth factor of a Hadamard matrix of order 16 is 16, 2009, Numer. Linear Algebra Appl., to appear.
| |
| : C. Kravvaritis and M. Mitrouli, A technique for computing minors of binary Hadamard matrices and application to the Growth Problem, Electron. Trans. Numer. Anal., 31 (2008), 49-67.
| |
| : J. Geiser and C. Kravvaritis, Overlapping operator splitting methods and applications in stiff differential equations, Neural Parallel Sci. Comput., 16(2008), 189-200.
| |
| : C. Kravvaritis and M. Mitrouli, Compound matrices: properties, numerical issues and analytical computations, Numer. Algorithms, (2008), to appear.
| |
| : J. Geiser and C. Kravvaritis, A Domain Decomposition Method based on the Iterative Operator Splitting Method, Appl. Numer. Math., (2008), in press.
| |
| : C. Kravvaritis and M. Mitrouli, An Algorithm to Find Values of Minors of Hadamard Matrices, Bull. Greek Math. Soc., 54 (2007), 221-238.
| |
| : C. Kravvaritis and M. Mitrouli, Evaluation of Minors associated to weighing matrices, Linear Algebra Appl., 426 (2007), 774-809.
| |
| : C. Kravvaritis, M. Mitrouli and J. Seberry, On the Pivot Structure for the Weighing Matrix W(12,11), Linear Multilinear Algebra, 55:5 (2007), 471-:490.
| |
| : C. Kravvaritis and M. Mitrouli, Determinant Evaluations for Weighing Matrices, Int. J. Pure Appl. Math., 34:2 (2007), 163-176.
| |
| : J. Geiser and C. Kravvaritis, Weighted Iterative Operator Splitting Methods and Applications, Lecture Notes in Comput. Sci., 4310 (2007), 48-55.
| |
| : S. Georgiou and C. Kravvaritis, New Good Quasi-Cyclic Codes over GF(3), Int. J. Algebra, 1:1 (2007), 11-24.
| |
| : C. Kravvaritis, M. Mitrouli and J. Seberry, Counting Techniques Specifying the Existence of Submatrices in Weighing Matrices, Lecture Notes in Comput. Sci., 3718 (2005), 294-305.
| |
| : C. Kravvaritis, E. Lappas and M. Mitrouli, An algorithm to find values of minors of weighing matrices, Lecture Notes in Comput. Sci., 3401 (2005), 375-382.
| |
| : C. Kravvaritis, M. Mitrouli and J. Seberry, On the growth problem for skew and symmetric conference matrices, Linear Algebra Appl., 403 (2005), 183-206.
| |
| | |
| '''Papers in refereed conference proceedings'''
| |
| : C. Kravvaritis, Analytical Formulas for Minors of Orthogonal Matrices and an Application, «ICTCAM ’07 – International Conference on Trends in Computational and Applied Mathematics», 237-240, (Bucharest – Romania, June 2007).
| |
| : C. Kravvaritis, Growth Factors for Orthogonal (0,1,-1) Matrices, «Hellenic Conference on Mathematical Education», 531-541, (Kozani – Greece, November 2007).
| |
| | |
| '''Submitted papers'''
| |
| :J. Geiser and C. Kravvaritis, An Operator Splitting method with embedded Newton method. (J. Comput. Appl. Math.) - February 2008
| |
| :J. Geiser and C. Kravvaritis, Extended Iterative Operator Splitting methods for stiff problems and applications. (J. Comput. Appl. Math.) - July 2008
| |
| :C. Kravvaritis and M. Mitrouli, On some numerical properties of Hadamard matrices. (Appl. Numer. Math.) - December 2008
| |
| :C. Kravvaritis, Determinant Evaluations for Binary Circulant Matrices. (Electron. J. Linear Algebra) - January 2009
| |
| | |
| '''Theses'''
| |
| :Christos Kravvaritis, Weighing matrices and their contribution to the study of the growth problem, Master Thesis, University of Athens, 2004.
| |
| :Christos Kravvaritis, A determinant computations framework for Weighing matrices and application to the growth problem, PhD Thesis, University of Athens, 2008.
| |
| <HR>
| |
| == Selected Publications ==
| |
| <BR>
| |
| [http://ckravv.googlepages.com/had16_7nlaa.pdf The growth factor of a Hadamard matrix of order 16 is 16], Numer. Linear Algebra Appl., 2009, to appear, joint work with M. Mitrouli.
| |
| <BR>
| |
| [http://ckravv.googlepages.com/orthogonal3.pdf A technique for computing minors of binary Hadamard matrices and apllication to the Growth Problem], Electron. Trans. Numer. Anal., 31 (2008) 49-67, joint work with M. Mitrouli.
| |
| <BR>
| |
| [http://ckravv.googlepages.com/compounds_na.pdf Compound matrices: properties, numerical issues and analytical computations], Numer. Algorithms, 2009, to appear, joint work with M. Mitrouli.
| |
| <BR>
| |
| [http://ckravv.googlepages.com/apnum07_2els_5.pdf A Domain Decomposition Method based on the Iterative Operator Splitting Method], Appl. Numer. Math., 2008, to appear joint work with J. Geiser.
| |
| <BR>
| |
| [http://ckravv.googlepages.com/laa2.pdf Evaluation of Minors associated to weighing matrices], Linear Algebra Appl., 426 (2007) 774-809, joint work with M. Mitrouli.
| |
| <BR>
| |
| [http://ckravv.googlepages.com/lama1.pdf On the Pivot Structure for the Weighing Matrix W(12,11)], Linear Multrilinear Algebra, 34 (2007) 163-176, joint work with M. Mitrouli and J. Seberry.
| |
| <BR>
| |
| [http://ckravv.googlepages.com/laa1.pdf On the growth problem for skew and symmetric conference matrices], Linear Algebra Appl., 403 (2005) 183-206, joint work with M. Mitrouli and J. Seberry.
| |
| <HR>
| |