Remainders of the Gauss and Turán quadrature formulas
Abstract AuthorsD.V. Ionescu (Computing Institute) Dumitru V. Ionescu (1901-1985) Keywords? Paper coordinatesD.V. Ionescu, Restes des formules de quadrature de Gauss et…
Approximation Theory
Cubature formulas with a reduced number of nodes. I
Abstract AuthorsDumitru V. Ionescu Institutul de Calcul Keywords? Paper coordinatesD.V. Ionescu, Formules de cubature avec un nombre reduit de nœuds. I. (French) Bul. Inst.…
Cubature formulas with a small number of nodes. II
Abstract AuthorsD.V. Ionescu Institutul de Calcul Keywords? Paper coordinatesD.V. Ionescu, Formules de cubature avec un petit nombre de nœuds. II. (French) Bul. Inst.…
Application of quadrature formulas to the study of certain numerical derivation formulas and their remainders
Abstract AuthorsD.V. Ionescu Dumitru V. Ionescu (1901-1985) Keywords? Paper coordinatesD.V. Ionescu, Application des formules de quadrature à l’étude de certaines formules…
On an interpolation problem relating to the solutions of fourth-order linear differential equations
Abstract AuthorsO. Arama Institutul d eCalcul Keywords? Paper coordinatesO. Aramă, Sur un problème d’interpolation relatif aux solutions des équations différentielles…
Extension of the Gauss quadrature formula to a class of cubature formulas
Abstract AuthorsD.V Ionescu Institutul de Calcul Keywords? Paper coordinatesD.V. Ionescu, Extension de la formule de quadrature de Gauss à une classe…
Using an interpolation scheme
Abstract AuthorsGh. Cimoca Institutul de Calcul Keywords? Paper coordinatesGh. Cimoca, Über ein Interpolationsschema, (in German) Mathematica (Cluj) 11 (34) 1969 61–67. PDFhttps://ictp.acad.ro/wp-content/uploads/2025/11/1969-Cimoca-Uber-ein-interpolationsschema.pdf About this…
Introduction to the theory of “spline functions”
Abstract AuthorsD.V. Ionescu Institutul de Calcul Keywords? Paper coordinatesD.V. Ionescu, Introduction à la théorie des “fonctions spline” (in French) Acta Math.…
Obrechkoff-type cubature formulas with a degree of accuracy equal to four
Abstract AuthorsD.V. Ionescu Institutul de Calcul Keywords? Paper coordinatesD.V. Ionescu, Formules de cubature du type Obrechkoff ayant le degré d’exactitude égal…
On uniform approximation by functions having restricted ranges
Abstract AuthorsGh. Cimoca Institutul de Calcul Keywords? Paper coordinatesGh. Cimoca, On uniform approximation by functions having restricted ranges, Mathematica (Cluj) 12(35) (1970), 237–251. PDFhttps://ictp.acad.ro/wp-content/uploads/2025/10/1970-Cimoca-Mathematica.pdf About…