Autor: Stavroulakis, Ioannis P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Oscillatory results for second-order noncanonical delay differential equations
Autorzy:: Dzurina, Jozef
Jadlovska, Irena
Stavroulakis, Ioannis P.
Powiązania:: https://bibliotekanauki.pl/articles/255407.pdf
Data publikacji:: 2019
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: linear differential equation
delay
second-order
noncanonical
oscillation
Opis:: The main purpose of this paper is to improve recent oscillation results for the second-order half-linear delay differential equation [formula] under the condition [formula]. Our approach is essentially based on establishing sharper estimates for positive solutions of the studied equation than those used in known works. Two examples illustrating the results are given.
Źródło:: Opuscula Mathematica; 2019, 39, 4; 483-495
1232-9274
2300-6919
Pojawia się w:: Opuscula Mathematica
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Oscillation criteria for linear difference equations with several variable delays
Autorzy:: Benekas, Vasileios
Garab, Ábel
Kashkynbayev, Ardak
Stavroulakis, Ioannis P.
Powiązania:: https://bibliotekanauki.pl/articles/2049029.pdf
Data publikacji:: 2021
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: oscillation
difference equations
several delays
non-monotone argument
slowly varying function
Opis:: We obtain new sufficient criteria for the oscillation of all solutions of linear delay difference equations with several (variable) finite delays. Our results relax numerous well-known limes inferior-type oscillation criteria from the literature by letting the limes inferior be replaced by the limes superior under some additional assumptions related to slow variation. On the other hand, our findings generalize an oscillation criterion recently given for the case of a constant, single delay.
Źródło:: Opuscula Mathematica; 2021, 41, 5; 613-627
1232-9274
2300-6919
Pojawia się w:: Opuscula Mathematica
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Oscillation conditions for difference equations with several variable delays
Autorzy:: El-Matary, Bassant M.
El-Morshedy, Hassan A.
Benekas, Vasileios
Stavroulakis, Ioannis P.
Powiązania:: https://bibliotekanauki.pl/articles/29519474.pdf
Data publikacji:: 2023
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: oscillation
difference equations
non-monotone delays
first order
Opis:: A technique is developed to establish a new oscillation criterion for a first-order linear difference equation with several delays and non-negative coefficients. Our result improves recent oscillation criteria and covers the cases of monotone and non-monotone delays. Moreover, the paper is concluded with an illustrative example to show the applicability and strength of our result.
Źródło:: Opuscula Mathematica; 2023, 43, 6; 789-801
1232-9274
2300-6919
Pojawia się w:: Opuscula Mathematica
Dostawca treści:: Biblioteka Nauki

Artykuł

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