JAEM 2020, Vol 10, No 3 koleksiyonunu içerir. http://belgelik.isikun.edu.tr/xmlui/handleiubelgelik/2411 2026-04-08T13:38:33Z 2026-04-08T13:38:33Z Demiray, Hilmi http://belgelik.isikun.edu.tr/xmlui/handleiubelgelik/6046 2024-07-18T09:39:53Z 2020-01-01T00:00:00Z

A note on the cylindrical waves with transverse distortion in a plasma with vortex electron distribution Demiray, Hilmi In the present work, employing the conventional reductive perturbation method and the nonlinear field equations of a plasma consisting of a cold electron uid, hot electrons obeying a non-isothermal (trapped/vortex-like) distribution and station-ary ions with transverse distortion, we studied the propagation of nonlinear waves in such a plasma medium and obtained the modified CKP equation. Seeking a progressive wave solution to this evolution equation we obtained the exact analytical solution. It is observed that the speed of the solitary wave is directional dependent and the wave front is not circularly cylindrical surface any more.

2020-01-01T00:00:00Z Bekkar, Lourabi Hariz Mansour, Abdelouahab Beloul, Said http://belgelik.isikun.edu.tr/xmlui/handleiubelgelik/2869 2024-05-08T19:37:19Z 2020-05-04T00:00:00Z

On operator equation AXB-CXD = CE via subnormality in Hilbert spaces Bekkar, Lourabi Hariz; Mansour, Abdelouahab; Beloul, Said The purpose of this study is to give the necessary and sufficient conditions of the existence of solution for an operator equation of Sylvester type with subnormality of bounded operators in finite dimension complex separable Hilbert space. Our results improve and generalize some results with operators in restricted cases.

2020-05-04T00:00:00Z Talebi, Ali Asghar Rashmanlou, Hossein Sadati, Seyed Hossein http://belgelik.isikun.edu.tr/xmlui/handleiubelgelik/2868 2024-05-08T19:37:19Z 2020-01-01T00:00:00Z

New concepts on m-polar interval-valued intuitionistic fuzzy graph Talebi, Ali Asghar; Rashmanlou, Hossein; Sadati, Seyed Hossein Theoretical concepts of graphs are highly utilized by computer science applications. Especially in research areas of computer science such as data mining, image segmentation, clustering, image capturing and networking. The concept of interval-valued intuitionistic fuzzy set was introduced by Atanassov [3]. Interval-valued intuitionistic fuzzy sets provide a more adequate description of uncertainly than the traditional fuzzy sets. It has many applications in fuzzy control and the most computationally intensive part of fuzzy control is defuzzification. In this paper the authors introduced the concepts of m-polar interval-valued intuitionistic fuzzy graph (IVIFG), edge regular m-polar IVIFG, totally edge regular m-polar IVIFG and highly irregular m-polar IVIFG.

2020-01-01T00:00:00Z Keyhanfar, Alireza Rasouli, Sayyed Hashem Afrouzi, Ghasem Alizadeh http://belgelik.isikun.edu.tr/xmlui/handleiubelgelik/2867 2024-05-08T19:37:19Z 2020-04-07T00:00:00Z

Existence of a positive solution for superlinear Laplacian equation via mountain pass theorem Keyhanfar, Alireza; Rasouli, Sayyed Hashem; Afrouzi, Ghasem Alizadeh In this paper, we are going to show a nonlinear laplacian equation with the Dirichlet boundary value as follow has a positive solution: ( −∆u + V (x)u = g(x, u) x ∈ Ω u = 0 x ∈ ∂Ω where, ∆u = div(∇u) is the laplacian operator, Ω is a bounded domain in R³ with smooth boundary ∂Ω. At first, we show the equation has a nontrivial solution. next, using strong maximal principle, Cerami condition and a variation of the mountain pass theorem help us to prove critical point of functional I is a positive solution.

2020-04-07T00:00:00Z