Dell’Aglio, Luca; Millan Gasca, Ana Research day dealing with the scientific work of Tullio Levi-Civita. (Italian) Zbl 0782.01014 Physis, Nuova Ser. 29, No. 3, 854-859 (1992). In December 12, 1991, a workshop in Rome took place in honour of the 50th anniversary of the death of Tullio Levi-Civita. There were given four lectures meant as contributions to a scientific biography:1. The relation between theory and application in the work of Levi- Civita, in respect of the absolute differential calculus and the three- body problem. (G. Israel, L. Dell’Aglio).2. Levi-Civita’s figure in the development of general relativity (C. Cattani, M. DeMaria).3. Levi-Civita and the resumption of international relations after the first world war, presented in the case of applied mechanics (G. Battimelli).4. The emerge of the international dimension of Levi-Civita (P. Nastasi).There are presented short summaries. Reviewer: K.Reich (Stuttgart) MSC: 01A60 History of mathematics in the 20th century 83-03 History of relativity and gravitational theory 70F07 Three-body problems Keywords:parallelism; three-body problem; internationalization; absolute differential calculus; general relativity Biographic References: Levi-Civita, Tullio PDFBibTeX XMLCite \textit{L. Dell'Aglio} and \textit{A. Millan Gasca}, Physis, Nuova Ser. 29, No. 3, 854--859 (1992; Zbl 0782.01014)