In block ciphers, the nonlinear components, also known as sub- stitution boxes (S-boxes), are used with the purpose of inducing confusion in cryptosystems. For the last decade, most of the work on designing S-boxes over the points of elliptic curves …
In this paper, we introduce the concept of $\Sigma$-semicommutative ring for $\Sigma$ a finite family of endomorphisms of a ring $R$. We relate this class of rings with other classes of rings such as Abelian, reduced, $\Sigma$-rigid, nil-reversible …
In this paper, we provide a new and more general filtration to the family of noncommutative rings known as skew PBW extensions. We introduce the notion of $\sigma$-filtered skew PBW extension and study some homological properties of these algebras. …
**Objective:** based on partial research results in the line of knowledge and practices in the formation of mathematics teachers, this article seeks to reveal the realities that took place in math classes during the pandemic generated by the …
In this contribution, we extend the concept of coherent pair for two quasi-definite matrix linear functionals $u_{0}$ and $u_{1}$. Necessary and sufficient conditions for these functionals to constitute a coherent pair are determined, when one of …
Coding theory is the study of the properties of codes and their respective fitness for specific applications. Codes are used for data compression, cryptography, error detection, error correction, data transmission, and data storage. Codes are studied …
Cayley hash values are defined by paths of some oriented graphs (quivers) called Cayley graphs, whose vertices and arrows are given by elements of a group $\mathfrak{H}$. On the other hand, Brauer messages are obtained by concatenating words …
Comprender del comportamiento del clima, es de interes en diversos sectores de la produccion. En este sentido, el libro presenta resultados de la investigacion que tenia como proposito describir la incidencia ejercida por el clima en los …
Esta investigación sobre el profesor de matemáticas y su acción en clase, responde a un esfuerzo conjunto entre grupos de investigación de Colombia, España, Ecuador y Panamá. Visibiliza aportes de investigación desde distintas perspectivas teóricas y …
Zavadskij modules are uniserial tame modules. They arose from interactions between the poset representation theory and the classification of general orders. The main problem is to characterize Zavadskij modules over a finite-dimensional algebra A. In …