Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Klara Janglajew"'
Autor:
Klara Janglajew, Ewa Schmeidel
Publikováno v:
Tatra Mountains Mathematical Publications. 63:139-151
In this paper, necessary and sufficient conditions for factorization of a linear differential operator are presented. As a consequence of the factorization result some criterion of polynomial factorization is obtained. As a special case of the main r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f84cfc5c25aa23f58e2534aeb726bd96
https://doi.org/10.1515/tmmp-2015-0026
https://doi.org/10.1515/tmmp-2015-0026
Publikováno v:
Discrete & Continuous Dynamical Systems - B. 19:2461-2467
The paper is devoted to the investigation of a linear differential equation with advanced argument $\dot y(t)=c(t)y(t+\tau),$ where $\tau>0$, and the function $c\colon [t_0,\infty)\to (0,\infty)$, $t_0\in \mathbb{R}$ is bounded and locally Lipschitz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::829cd80498bb49734da3fa8adc00cb72
https://doi.org/10.3934/dcdsb.2014.19.2461
https://doi.org/10.3934/dcdsb.2014.19.2461
Autor:
Kim G. Valeev, Klara Janglajew
Publikováno v:
Tatra Mountains Mathematical Publications. 54:93-99
The paper deals with a linear system of differential equations of the form with constant coefficients, a small parameter and complex deviating argument. Sufficient conditions for factorizing of this system are presented. These conditions are obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e4184d454e06c6bacd69763962d095d
https://doi.org/10.2478/tmmp-2013-0008
https://doi.org/10.2478/tmmp-2013-0008
Autor:
Klara Janglajew, Alina Dobrogowska
Publikováno v:
Journal of Difference Equations and Applications. 13:1171-1177
We prove that a linear (q, h)-difference operator with leading coefficient equal to one admits a factorization into first order linear (q, h)-difference operators. Some applications and limiting cases are also presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6917058e68d952c5ee08a908601b46f2
https://doi.org/10.1080/10236190701465027
https://doi.org/10.1080/10236190701465027
Autor:
Klara Janglajew, Kim G. Valeev
Publikováno v:
Computers & Mathematics with Applications. 42(3-5):729-733
In this paper, we indicate necessary and sufficient conditions for factorization of the difference operator. These conditions are connected with the existence of solutions of linear difference equations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7e0c0d225fff7388c6e10f5cc951871
Autor:
Saber Elaydi, Klara Janglajew
Publikováno v:
Journal of Difference Equations and Applications. 3:98-103
Dedicated to Professor Gerry Ladas on his sixtieth birthday in acknowledgement of his leading role of difference equations. We extend the notions of dichotomy and trichotomy to nonlinear ordinary difference equations. This is accomplished by using tw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9f48c0d921e785f9f76f25e381f0c66
https://doi.org/10.1080/10236199708808113
https://doi.org/10.1080/10236199708808113
Autor:
Kim G. Valeev, Klara Janglajew
Publikováno v:
Advances in Difference Equations. 2013
The paper deals with the problem of factorization of a linear differential operator with matrix-valued coefficients into a product of lower order operators of the same type. Necessary and sufficient conditions for the factorization of the considered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e78f67a0fdcf3f6d1f7b97f9ff1d3c7e
https://doi.org/10.1186/1687-1847-2013-237
https://doi.org/10.1186/1687-1847-2013-237
Autor:
Ewa Schmeidel, Klara Janglajew
Publikováno v:
Advances in Difference Equations. 2012
Firstly, sufficient conditions for nonexistence of an ω-periodic solution of the equation are presented. Then, sufficient conditions under which every solution of the above equation is asymptotically ω-periodic are given. Next, the results obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::840376ebde5480eca5abc8b701aae09b
https://doi.org/10.1186/1687-1847-2012-195
https://doi.org/10.1186/1687-1847-2012-195
Autor:
Klara Janglajew
Publikováno v:
Difference Equations, Special Functions and Orthogonal Polynomials.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78551b9e8304c12933bc3cd5e9c096b9
https://doi.org/10.1142/9789812770752_0024
https://doi.org/10.1142/9789812770752_0024
