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- Suat Karadeniza, Bahattin Yildiza, Nuh Aydinb, Eberhard Malkowsky
- 2014

A classification of all four-circulant extremal codes of length 32 over F2 + uF2 is done by using four-circulant binary self-dual codes of length 32 of minimum weights 6 and 8. As Gray images of these codes, a substantial number of extremal binary self-dual codes of length 64 are obtained. In particular a new code with β = 80 in W64,2 is found. Then… (More)

- Eberhard Malkowsky, Vladimir Rakocevic
- Applied Mathematics and Computation
- 2007

- Yurdal Severa, Bilal Altayb, Eberhard Malkowsky
- 2015

In this study, we define the double Cesàro sequence spaces Cesp, Cesbp and Cesbp0 and examine some properties of those sequence spaces. Furthermore, we determine the β(bp)-duals of the spaces Cesbp and Cesp.

- Feyzi Basar, Eberhard Malkowsky
- Applied Mathematics and Computation
- 2011

- Bilâl Altay, Feyzi Basar, Eberhard Malkowsky
- Applied Mathematics and Computation
- 2009

Visualisation and animation are of vital importance for the modern methods in mathematical education. They strongly support the understanding of concepts in mathematics and physics. We think that the application of a commercial graphics software package is neither a satisfactory approach for the illustration of the theoretical concepts, nor can it be used… (More)

- Ivana Djolovic, Eberhard Malkowsky
- Applied Mathematics and Computation
- 2008

In this paper we establish a relation between the notion of operators of analytic semigroups and matrix transformations from a set of sequences into w∞. We get extensions of some results given by Labbas and de Malafosse concerning applications of the sum of operators in the nondifferential case.

- Bruno de Malafosse, Eberhard Malkowsky, Vladimir Rakocevic
- Int. J. Math. Mathematical Sciences
- 2006

whenever the series are convergent for all n≥ 1. For any given subsets X , Y of s, we will say that the operator represented by the infinite matrix A = (anm)n,m≥1 maps X into Y that is A∈ (X ,Y), if (i) the series defined by An(x)= ∑∞ m=1 anmxm are convergent for all n≥ 1 and for all x ∈ X ; (ii) Ax ∈ Y for all x ∈ X . If c ⊂ cA = {x : Ax ∈ c},A is… (More)