Necessary and sufficient conditions for the oscillation of forced nonlinear second order delay difference equation
Kybernetika, Tome 35 (1999) no. 4, p. [499].

Voir la notice de l'article dans Czech Digital Mathematics Library

In this paper the authors give necessary and sufficient conditions for the oscillation of solutions of nonlinear delay difference equations of Emden– Fowler type in the form $\Delta ^2y_{n-1}+q_ny_{\sigma (n)}^\gamma =g_n$, where $\gamma $ is a quotient of odd positive integers, in the superlinear case $(\gamma >1)$ and in the sublinear case $(\gamma 1)$.
Classification : 34K40, 39A05, 39A10, 39A12, 39A21
Mots-clés : oscillation; nonlinear delay difference equation; Emden-Fowler type 
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     author = {Thandapani, E. and Ramuppillai, L.},
     title = {Necessary and sufficient conditions for the oscillation of forced nonlinear second order delay difference equation},
     journal = {Kybernetika},
     pages = {[499]},
     publisher = {mathdoc},
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     number = {4},
     year = {1999},
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     zbl = {1274.39022},
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Thandapani, E.; Ramuppillai, L. Necessary and sufficient conditions for the oscillation of forced nonlinear second order delay difference equation. Kybernetika, Tome 35 (1999) no. 4, p. [499]. https://geodesic-test.mathdoc.fr/item/KYB_1999__35_4_a7/