The goal of this work is finding exact solitary wave solutions to generalized Fitzhug-Nagumo equation with constant coefficients, by using the exp-function method, where we have illustrated graphically one of them, the obtained results, with aid of s
ymbolic programs as Maple and Mathematica, show that this method is simple, direct and very efficient for solving this kind of nonlinear PDEs, and it requires no advanced mathematical knowledge, so it is convenient to scientists and engineering.
In this work, we have been obtained exact solutions for generalized Fitzhug-Nagumo equation with constant coefficients, by using the first integral method, and we have shown that this method is an efficient method to obtain exact solutions to this kind of nonlinear partial differential equations.
This Work suggests a study of small motions of system of capillary viscous fluids in rotation vessels ,i.e: to prove the unique solvability theorem of the initial boundary value problem that describe these motions. For that we reduced to Cauchy probl
em that has the form:
Where is a continuous function with values in the Hilbert space E, A is an operator on E,
By using Functional analysis methods (Orthogonal projector, Operator approach,…)
The staircase visibility concerns with the study of orthogonal polygon, one of the most important subjects which are studied is the Specification kernel of the orthogonal starshaped set. Toranzos represent a very important result in Specifying the ke
rnel of the starshaped set in the usual notion of visibility via segments, after that Breen presented an analogue to this result of the staircase visibility. She also could find a way for Specifying the kernel of starshaped orthogonal polygon when this orthogonal polygon is a simply connected.
The aim of this paper is generalizing the previous way when the orthogonal polygon is secondly connected and the bounded component for the complement is a rectangular; we will prove the following result:
Let , be secondly connected closed orthogonal polygon, and staircase starshaped set. If the boundary of the bounded component for the complement is a rectangle ,so the kernel of is either one component or two or four ones.
The purpose of the research is to study Bergman distance to generalize Lasry – Lions regularization which play important role of theory optimization.
To do that we replace the quardatic additive terms in Lasry – Lions regularization by more gene
ral Bergman distance (non metric distance), and study properties generalized approximation and proof its continuous as we give a relationship between the solution minimization sets of function and Lions – Lasry Regularization and others properties.
We study in this research approximation of complex functions from Orlicz space on a subclass of Carlson curves, which called Dini smooth curves to rational functions by using polynomials related with Dzjadyk sums which obtained from Faber polynomials. We depend on some concepts of complex analysis such as formulas of Sokhotski to reach the desired goal
This paper concerns the mathematical, linear model of elastic,
homogeneous and isotropic body, of neglected structure and of
small elastic deformations in the frame of linear theory of elasticity; proposed by Hooke, and shortly called (H). In this
paper, first, we write the displacement Lame equations for (H) elastic body, which initial configuration is unbounded, simply connected region in 3 R .Next, by using Stocks-Helmholtz theorem, we discuss the Nowacki's potential equations for the (H) elastic body. Then, we demonstrate the resulting equations from Lame equations for the displacement amplitudes, when the displacements and body loads varying harmonically in time. We, also demonstrate the resulting equations from the Nowacki's potential equations for the Nowacki's potential amplitudes, in the case when the Nowacki's potentials and body loads varying harmonically in time. Next, after demonstrating tow important theorems, giving volume-surface integral transforms
for Helmholtz differential operators, we derive an integral representations for the solutions of the nonhomogeneous Nowacki's potential equations, all these in form of surface integrals on the boundary of tow-order connected region, occupied by a part of the body, in the initial moment. Then, we discuss the asymptotic conditions of Sommerfeld type for the above mentioned solutions (which relate to the nonzero body loads varying harmonically in time), when the external surface of the tow-order connected region tends to the infinity. Finally, we end this paper by some important open problems.
This paper is devoted to the analysis of the impact of chaos-based
techniques on block encryption ciphers. We present several chaos
based ciphers. Using the well-known principles in the cryptanalysis
we show that these ciphers do not behave worse
than the standard
ones, opening in this way a novel approach to the design of block
encryption ciphers.
The main goal of the presented research in this paper is to find a general way to solve longitudinal vibration problems. This way must solve these problems in nonlinear elastic bar systems with a biological factor.
We applied longitudinal vibration
equations in a nonlinear elastic bar with biological factor, the bar material was taken non-linear. and solve the problem in a bar of finite length.
The main goal of the presented research in this paper is to find a unified way to solve longitudinal vibration problems in nonlinear viscoelastic media with a biological factor and solve the problem in a bar of finite length.
