Comparison theorems on the oscillation of even order nonlinear mixed neutral differential equations    
Yazarlar (2)
Prof. Dr. Ercan TUNÇ Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Doç. Dr. Orhan ÖZDEMİR Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Mathematical Methods in the Applied Sciences
Dergi ISSN 0170-4214 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 01-2023
Cilt No 46
Sayı 1
Sayfalar 631 / 640
DOI Numarası 10.1002/mma.8534
Makale Linki https://onlinelibrary.wiley.com/doi/full/10.1002/mma.8534
Özet
This study purposes to present some new comparison theorems that guarantee the oscillation of all solutions of even order functional differential equations with a neutral term including both advanced and delayed arguments. The obtained results are based on comparisons with associated first-order delay differential inequalities and first-order delay differential equations, and they are applicable to the both cases where the neutral coefficients are unbounded and/or bounded. In the last section, several examples showing the applicability of the results are provided.
Anahtar Kelimeler
even-order | neutral differential equations | oscillation