Posts by ictp

Convex combinations of Graham-Kohr type extension operators

Abstract   AuthorsKeywordsReferencesPDFScanned paper. Latex version of the paper. About this paperCite this paper as:JournalStudii şi cercetări matematice Publisher NameAcademia Republicii S.R. DOINot available yet. Print ISSNNot available yet. Online…

Tribute Conference D.V. Ionescu – 125 years

The Faculty of Mathematics and Computer Science of Babeș-Bolyai University and the Tiberiu Popoviciu Institute of Numerical Analysis cordially invite you to attend the commemorative session dedicated to Professor Dumitru…

On an equation

Abstract AuthorsD.V.Ionescu Institutul de Calcul KeywordsPDFScanned paper. Latex version of the paper. https://ictp.acad.ro/wp-content/uploads/2026/06/1948-Ionescu-DV-Publ.Inst_.Cerc_.St_.-al-RPR-Sur_une_equation-1948-vol_6-p49-80.pdf Cite this paper as:D.V. Ionescu, Sur une équation de récurrence à deux indices. (French) Disquisit. Math. Phys.…

Some applications of a formula by G. Darboux

Abstract AuthorsD.V. Ionescu Institutul de Calcul KeywordsPDFScanned paper. Latex version of the paper. https://ictp.acad.ro/wp-content/uploads/2026/05/1940-Ionescu-DV-Bull.soc_.St_.Cluj-Quelques_applications_d_une_formule-vol_9-p446-452.pdf Cite this paper as:D.V. Ionescu, Quelques applications d une formule de G. Darboux, Bull.Soc.Stiinte din Cluj,…

On a finite difference equation

Abstract AuthorsD.V.Ionescu Institutul de Calcul KeywordsPDFScanned paper. Latex version of the paper. https://ictp.acad.ro/wp-content/uploads/2026/05/1940-Ionescu-DV-Comptes-Rendus-Sur_une_equation-1940-vol_4-p227-230.pdf Cite this paper as:D.V. Ionescu, Sur une equation aux differences finies, Comptes Rendus, vol. 4. 1940, p.227-230…

A theorem on traversals of a knot, Review of Pure and Applied Mathematics

Abstract AuthorsGh. Călugăreanu Gheorghe Călugăreanu (1902-1976) KeywordsPDFhttps://ictp.acad.ro/wp-content/uploads/2026/08/1962-Gh.-Calugareanu-Revue-de-Mathematiques-Pures-et-Appliquees-Un-theoreme-sur-les-traversees-dun-noeud-pp.-565-569.pdf Cite this paper as:Gh. Călugăreanu, Un théorème sur les traversées d’un nœud, Revue de Mathématiques Pures et Appliquées, Académie de la République Populaire…