The Unione Matematica Italiana and its Bollettino, 1922-1928. National and International Aspects

The Unione Matematica Italiana (Italian Mathematical Union, UMI) was created according to a motion approved in Brussels in July 1919 by the International Research Council, which promoted the creation of national scientific committees. The recent reorganization of the UMI Archive has made significant documents available to science historians. By using some of these unpublished letters and documents, we focus on the following issues: (i) The foundation and early years of the UMI and its journal, the Bollettino della Unione Matematica Italiana (BUMI); (ii) The international models for the new society, in particular the Deutsche Mathematiker-Vereinigung, the Société mathématique de France and the American Mathematical Society; (iii) The impact of national and international events on the UMI, including the International Congresses of Mathematicians (ICM).