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81.928  Articles
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The object of research is the process of ensuring 24-hour compliance with the technical specifications of the aerodynamic runway illumination. Under these conditions, the existence of a diffuse structure of the process of heat transfer of the working flui... see more

The object of research is the process of ensuring 24-hour compliance with the technical specifications of the aerodynamic runway illumination. Under these conditions, the existence of a diffuse structure of the process of heat transfer of the working flui... see more

?The existence of at least three weak solutions for a class of perturbed? ?fourth-order problems with a perturbed nonlinear term is investigated?. ?Our??approach is based on variational methods and critical point theory?.

The purpose of this paper is to establish a new result, which guarantees the asymptotic stability and boundedness of the zero solution and the square integrability of solutions and their derivatives to neutral type nonlinear differential equations of four... see more

This paper presents a symbolic-numeric approach for solving linear differential equations of the fourth order in the form of generalized power series. The working program allows to find solutions to differential equations of the fourth order in the form o... see more

Using a reduced isotropic crystal model the relationship between the fourth-order elastic moduli of an isotropic medium and the independent components of the fourth-order elastic moduli tensor of real crystals of various crystal systems is found. To calcu... see more

A set of direct and inverse elements are examined and compared with a four-dimensional orthonormal basis. The aggregate of even substitutions of fourth power as a product of two transpositions are formed on this finite set. The finite set of substitutions... see more

Let F be the field of rational functions of a real algebraic curve without real points. It is well-known that in F we can express -1 as a sum of two squares. We show that -1 is also a sum of four fourth powers, six sixth powers, and so on.

In this expository article we give a self-contained presentation on the rational points of finite order on smooth cubics. We mainly construct examples of points of order between four and twelve, except the eleven case of course. And, in some cases, we off... see more

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