ODEs (theory)

Abstract AuthorsD. Ripeanu (Ripianu) Institutul de Calcul Keywords? Paper coordinatesD. Ripeanu, Sur les racines des solutions de l’équation y′′+p1(x)y′+p2(x)y=0. (French) Mathematica (Cluj) 19(42) (1977), no.…

Abstract The purpose of this paper is to study a generalization of a D.V. Ionescu’s problem. Existence, uniqueness and data…

Abstract We consider an integro-differential equation with two time lags and we prove the existence, uniqueness and convergence of the…

Abstract There are many problems in Celestial Mechanics which can be reduced to differential equations, either linear or nonlinear. We…