Zobrazeno 1 - 10
of 155
pro vyhledávání: '"KOTSIREAS, ILIAS S."'
Autor:
Kotsireas, Ilias S., Winterhof, Arne
We introduce quaternary Legendre pairs of length $\ell$. In contrast to binary Legendre pairs they can exist for even $\ell$ as well. First we show that they are pertinent to the construction of quaternary Hadamard matrices of order $2\ell+2$ and thu
Externí odkaz:
http://arxiv.org/abs/2212.10953
Survey of Methods for Solving Systems of Nonlinear Equations, Part II: Optimization Based Approaches
Autor:
Kotsireas, Ilias S., Pardalos, Panos M., Semenov, Alexander, Trevena, William T., Vrahatis, Michael N.
This paper presents a comprehensive survey of methods which can be utilized to search for solutions to systems of nonlinear equations (SNEs). Our objectives with this survey are to synthesize pertinent literature in this field by presenting a thoroug
Externí odkaz:
http://arxiv.org/abs/2208.08532
Autor:
Kotsireas, Ilias S., Pardalos, Panos M., Semenov, Alexander, Trevena, William T., Vrahatis, Michael N.
This paper presents a comprehensive survey of methods which can be utilized to search for solutions to systems of nonlinear equations (SNEs). Our objectives with this survey are to synthesize pertinent literature in this field by presenting a thoroug
Externí odkaz:
http://arxiv.org/abs/2208.08530
Autor:
Kotsireas Ilias S., Koutschan Christoph, Bulutoglu Dursun A., Arquette David M., Turner Jonathan S., Ryan Kenneth J.
Publikováno v:
Special Matrices, Vol 11, Iss 1, Pp 814-841 (2023)
By assuming a type of balance for length ℓ=87\ell =87 and nontrivial subgroups of multiplier groups of Legendre pairs (LPs) for length ℓ=85\ell =85, we find LPs of these lengths. We then study the power spectral density (PSD) values of mm compres
Externí odkaz:
https://doaj.org/article/3c302c690f8e4ec1a70ae409bf7737a4
Publikováno v:
Math.Comput.Sci. (2018) 12:373-388
We single out a class of difference families which is widely used in some constructions of Hadamard matrices and which we call Goethals--Seidel (GS) difference families. They consist of four subsets (base blocks) of a finite abelian group of order $v
Externí odkaz:
http://arxiv.org/abs/1802.00556
Publikováno v:
Spec. Matrices 2019; 7: 127-141 (with a new title)
Our main objective is to show that the computational methods that we previously developed to search for difference families in cyclic groups can be fully extended to the more general case of arbitrary finite abelian groups. In particular the power de
Externí odkaz:
http://arxiv.org/abs/1801.07627