Bio
Dr. Ubon Akpan Abasiekwere is a mathematician and academic at the University of Uyo in Akwa Ibom State, Nigeria. He holds a Ph.D. in Mathematics, with a specialization in ordinary differential equations. His research focuses on the oscillation and classification of solutions for impulsive differential equations, particularly second-order and neutral delay equations. Dr. Abasiekwere has authored multiple papers in this domain, including works on advanced arguments and nonlinear neutral delay impulsive differential equations. With a publication record of 12 works and 13 citations, he maintains an h-index of 2. He also serves as a reviewer for the Global Journal of Science Frontier Research (GJSFR). His academic identifiers include an ORCID (0000-0002-2339-3543), OpenAlex author ID, Scopus author ID (35748599900), and Web of Science ResearcherID (O-6056-2018), reflecting his active presence in the global research community.
Educational Journey
Ph.D in Mathematics • Mathematics
Experience
Research
Oscillations of Second Order Impulsive Differential Equations with Advanced Arguments
A comparison theorem providing sufficient conditions for the oscillation of all solutions of a class of second order linear impulsive differential equations with advanced argument is formulated. A relation between the oscillation (non-oscillation) of second order impulsive differential equations with advanced arguments and the oscillation (nonoscillation) of the corresponding impulsive ordinary differential equations is established by means of the Lebesgue dominated convergence theorem. Obtained comparison principle essentially simplifies the examination of the studied equations.
