Autor: Cheng, Sui - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Oscillation of a logistic equation with delay and diffusion
Autorzy:: Xie, Sheng
Cheng, Sui
Powiązania:: https://bibliotekanauki.pl/articles/1311384.pdf
Data publikacji:: 1995
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:: oscillation theorem
functional parabolic differential equation
logistic equation
Opis:: This paper establishes oscillation theorems for a class of functional parabolic equations which arises from logistic population models with delays and diffusion.
Źródło:: Annales Polonici Mathematici; 1995, 62, 3; 219-230
0066-2216
Pojawia się w:: Annales Polonici Mathematici
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Existence criteria for positive solutions of a nonlinear difference inequality
Autorzy:: Cheng, Sui
Zhang, Guang
Powiązania:: https://bibliotekanauki.pl/articles/1208008.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:: Sturm type comparison theorem
limit comparison theorem
nth order linear difference equation
eventually positive solution
eventually positive nonincreasing solution
neutral difference equation
nonlinear delay difference inequality
Opis:: This paper is concerned with a class of nonlinear difference inequalities which include many different classes of difference inequalities and equations as special cases. By means of a Riccati type transformation, necessary and sufficient conditions for the existence of eventually positive solutions and positive nonincreasing solutions are obtained. Various type of comparison theorems are also derived as applications, which extends many theorems in the literature.
Źródło:: Annales Polonici Mathematici; 2000, 73, 3; 197-220
0066-2216
Pojawia się w:: Annales Polonici Mathematici
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Asymptotic dichotomy for nonoscillatory solutions of a nonlinear difference equation
Autorzy:: Zhang, Guang
Cheng, Sui
Powiązania:: https://bibliotekanauki.pl/articles/1338877.pdf
Data publikacji:: 1999
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:: difference equation
eventually positive solution
asymptotic dichotomy
Opis:: A nonlinear difference equation involving the maximum function is studied. We derive sufficient conditions in order that eventually positive or eventually negative solutions tend to zero or to positive or negative infinity.
Źródło:: Applicationes Mathematicae; 1998-1999, 25, 4; 393-399
1233-7234
Pojawia się w:: Applicationes Mathematicae
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Linearized comparison criteria for a nonlinear neutral differential equation
Autorzy:: Guan, Xinping
Cheng, Sui
Powiązania:: https://bibliotekanauki.pl/articles/1311059.pdf
Data publikacji:: 1996
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:: neutral differential equations
positive solutions
linearized comparison theorems
Opis:: A class of nonlinear neutral differential equations with variable coefficients and delays is considered. Conditions for the existence of eventually positive solutions are obtained which extend some of the criteria existing in the literature. In particular, a linearized comparison theorem is obtained which establishes a connection between our nonlinear equations and a class of linear neutral equations with constant coefficients.
Źródło:: Annales Polonici Mathematici; 1996, 64, 2; 161-173
0066-2216
Pojawia się w:: Annales Polonici Mathematici
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Classifications and existence of positive solutions of a higher order nonlinear difference equation
Autorzy:: Li, Wan-Tong
Cheng, Sui
Powiązania:: https://bibliotekanauki.pl/articles/965788.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:: sublinear function
nonlinear difference equation
superlinear function
eventually positive solution
existence theorem
Opis:: A classification scheme for the eventually positive solutions of a class of higher order nonlinear difference equations is given in terms of their asymptotic magnitudes, and necessary as well as sufficient conditions for the existence of such solutions are provided.
Źródło:: Colloquium Mathematicum; 2000, 83, 1; 137-153
0010-1354
Pojawia się w:: Colloquium Mathematicum
Dostawca treści:: Biblioteka Nauki

Artykuł

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