855 research outputs found
Algebras with ternary law of composition and their realization by cubic matrices
We study partially and totally associative ternary algebras of first and
second kind. Assuming the vector space underlying a ternary algebra to be a
topological space and a triple product to be continuous mapping we consider the
trivial vector bundle over a ternary algebra and show that a triple product
induces a structure of binary algebra in each fiber of this vector bundle. We
find the sufficient and necessary condition for a ternary multiplication to
induce a structure of associative binary algebra in each fiber of this vector
bundle. Given two modules over the algebras with involutions we construct a
ternary algebra which is used as a building block for a Lie algebra. We
construct ternary algebras of cubic matrices and find four different totally
associative ternary multiplications of second kind of cubic matrices. It is
proved that these are the only totally associative ternary multiplications of
second kind in the case of cubic matrices. We describe a ternary analog of Lie
algebra of cubic matrices of second order which is based on a notion of
j-commutator and find all commutation relations of generators of this algebra.Comment: 17 pages, 1 figure, to appear in "Journal of Generalized Lie Theory
and Applications
Photo- and Cathodoluminescence MG-doped Alumina Ceramics
This work was financially supported by the Russian Science Foundation (RSF), project No. 1872-10082
Ultrasonic intensification of ozone and electrochemical destruction of 1,3-dinitrobenzene and 2,4-dinitrotoluene
Nash equilibrium design in the interaction model of entities in the customs service system
The urgency of the analyzed issue is due to the importance of the use of economic-mathematical tools in the course of modeling the interaction of the entities in the customs service system that is necessary for the development of foreign economic activity (FEA) of any state. The purpose of the article is to identify effective strategies for the interaction between the participants of foreign trade activities with customs brokers. The leading method to the study of this issue is economic-mathematical modeling, allowing studying the process of making decisions while choosing the strategy of cooperation between the customs broker and his client. Results: the article suggests the mathematical model to optimize the management mechanisms of interaction between enterprises, engaged in foreign trade, and customs dealers. The data of this article may be useful in modeling interaction of the entities in the customs service system using the methods of game theory. The model of “customer - customs broker” is implemented as a bimatrix game. Assuming the noncooperativegame the authors solve the problem of finding Nash equilibrium in mixed strategies. © 2016 Fedorenko et al
Corrosion resistance of alloys of Hastelloy in chloroaluminate melts
The corrosion of Hastelloy S, Hastelloy X, Haynes 230, Hastelloy N, Hastelloy G35 and Hastelloy C2000 alloys was studied in KCl-AlCl3 melts at 550°С. The rates and the mechanisms of corrosion of the studied materials were determined. The processes taking place during the interaction between alloys and chloroaluminate melts were investigated
Joule Heating and Current-Induced Instabilities in Magnetic Nanocontacts
We consider the electrical current through a magnetic point contact in the
limit of a strong inelastic scattering of electrons. In this limit local Joule
heating of the contact region plays a decisive role in determining the
transport properties of the point contact. We show that if an applied constant
bias voltage exceeds a critical value, the stationary state of the system is
unstable, and that periodic, non-harmonic oscillations in time of both the
electrical current through the contact and the local temperature in the contact
region develop spontaneously. Our estimations show that the necessary
experimental conditions for observing such oscillations with characteristic
frequencies in the range Hz can easily be met. We also show a
possibility to manipulate upon the magnetization direction of a magnetic grain
coupled through a point contact to a bulk ferromagnetic by exciting the
above-mentioned thermal-electric oscillations.Comment: 9 pages, 6 figures, submitted to Physical Review
Strong antibacterial properties of cotton fabrics coated with ceria nanoparticles under high-power ultrasound
- …