Lotka, Volterra and their model
Abstract The chemist and statistician Lotka, as well as the mathematician Volterra, studied the ecological problem of a predator population…
(original)
On Kantorovich-type Operators in Lp Spaces
Abstract This note is devoted to the study of a linear positive sequence of operators representing an integral form in…
On a class of cubature formulas
Abstract AuthorsD.V. Ionescu Institutul de Calcul Keywords? Paper coordinatesD.V. Ionescu, Sur une classe de formules de cubature. C. R. Acad. Sci. Paris…
Chebyshev collocation solutions to some nonlinear and singular third-order problems relevant to thin-film flows
Abstract This paper concerns accurate spectral collocation solutions, more precisely Chebyshev collocation (ChC), to some third-order nonlinear and singular boundary…
On the characteristic function and the resolving kernel of a given kernel
Original title (in French)Sur la fonction caractéristique et le noyau résolvant d’un noyau donné Abstract AuthorsDumitru V. Ionescu Dumitru V.…
Some existence theorems of integrals of systems of differential equations
Original title (in French)Quelques théorèmes d’existence des intégrales des systèmes d’équations différentielles Abstract AuthorsD.V. Ionescu Dumitru V. Ionescu (1901-1985) Keywords?…
On Lord Kelvin’s theorem
Original title (in French)Sur théorème de Lord Kelvin Abstract AuthorsD.V. Ionescu Institutul de Calcul Keywords? Paper coordinatesD.V. Ionescu, Sur théorème…
On a system of second-order partial differential equations
Abstract AuthorsDumitru V. Ionescu Dumitru V. Ionescu Keywords? Paper coordinatesD.V. Ionescu, On a system of second-order partial differential equations, (French) Mathematica,…
On a problem relating to second-order partial differential equations
Abstract AuthorsDumitru V. Ionescu Dumitru V. Ionescu KeywordsPDFhttps://ictp.acad.ro/wp-content/uploads/2025/10/1927-IonescuDV-Sur-un-problem-relatif-aux-equations-aux-derivees-partielles-du-second-ordre-Bull.Soc_.Math_.pdf Paper coordinatesD.V. Ionescu, Sur un problem relatif aux equations aux derivees partielles…
Some curves that generalize conics
Abstract AuthorsDumitru V. Ionescu Dumitru V. Ionescu Keywords? Paper coordinatesD.V. Ionescu, Some curves that generalize conics, C.R. Acad. Sc. Paris, t.…