Bortkiewicz Vladislav I.

Born in 1868, graduated from the course at the Faculty of St. Petersburg. University. From 1895 to 1897. read as a privat-docent lectures on insurance of workers and Statistics in the University of Strasbourg. Later served in St. Petersburg office clerical administration of the pension fund of employees at state-owned railways and taught statistics at the Imperial Alexander Lyceum. Since 1901. professor at Berlin University, where he teaches mathematics and statistics related to her discipline. Another student Bortkevich presented to the Imperial Academy of Sciences study on mortality and longevity of the Orthodox population of European Russia (annex LXIII and LXVI volumes of Memoirs of the Imperial Academy of Sciences ", . Petersburg., . 1890 - 1891), . containing, . but mortality tables, . general outline of the foundations of the theory of mortality measurement,
. This essay, in common form, was presented by the author in the University of GцІttingen as a doctoral dissertation ( "Die mittlere Lebensdauer, die Methoden ihrer Bestimmung und ihr Verhaltniss zur Sterblichkeitsmessung", Jena, 1893). Great importance are the work of Bortkiewicz on the theory of stability of statistical series, closely adhering to the works of Lexis, it largely pushed forward the development of significant problems. His "Kritische Betrachtungen zur theoretischen Statistik" ( "Jahrbucher fur National-Oekonomie und Statistik", . Yen, . 1894, . 1895, . 1896) and in particular his study of "Das Gesetz der kleineu Zablen" (ц?ц?цІ., . 1898) are among the major works in this area,
. In addition to the above-mentioned studies, Bortkiewicz published in various journals and collections of many reviews and articles on theoretical statistics, calculus of probability, demographics, insurance business and the economic theory. Ch