Euleriana
A short bibliographical note 1. Leonhard Euler's scientific heritage is immense. His published scientific studies, numbering close to 800, comprise about 30 000 printed pages and consist of roughly 600 papers in periodicals and various collections of the Petersburg Academy of Sciences, 130 papers published in Berlin and in Western European journals, 15 memoirs, which were awarded prizes and promoted by the Paris Academy of Sciences, and 40 books of individual essays. A century ago a publication of Euler's "Complete Works" (Opera omnia) was undertaken. It was planned to divide them into three series: I. Mathematics (29 vols); II. Mechanics and Astronomy (31 vols); III. Physics and Varia (12 vols). The first volume was published in 1911, and the publication of the final two volumes, out of the planned 72, is expected in the next two or three years. In the 1970s it was decided to publish an additional series (IVA) of the Opera omnia that would contain Euler's scientific correspondence. 1 The first volume of ser. IVA (1975) consists of an annotated list of the whole scientific correspondence. Of the planned approximately ten volumes of this series only four have been published so far.