321 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
Local inhomogeneity of the magnetic field as a possible factor of influence on the human
The results of expeditionary studies in August 2013 at the Chui region of the earthquake epicenter (2003), in the area, characterized by an abnormal performance of the spatial distribution of the geomagnetic field vector values are presented. The adaptive response of the human body by analyzing the variability of the cardiovascular system activity in a short stay in the area of natural character geomagnetic anomalies is investigated. It is shown that a person entering the zone with abnormal magnetic field gradient levels can disrupt adaptive human body reaction that is accompanied by an increased level of the cardiovascular system functioning after visiting zone and increasing the power spectral density of oscillations several RR intervals of heart rate in the range of 0,04 -0,15 Hz and 0,5-1 Hz while in a zone. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only
Nonreciprocal transmission of microwaves through a long Josephson junction
Nonreciprocal microwave transmission through a long Josephson junction in the
flux-flow regime is studied analytically and numerically within the framework
of the perturbed sine-Gordon model. We demonstrate that the maximum attenuation
of the transmitted power occurs when the direction of the flux flow is opposite
to the direction of the microwave propagation. This attenuation is
nonreciprocal with respect to the flux-flow direction and can be enhanced by
increasing the system length and proper impedance matching of the junction ends
to external transmission line.Comment: 5 pages, 5 figure
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