Ladislaus von Bortkiewicz: a scientific biography
A Russian version of this paper is Шейнин (2008b). Vladislav Iosifovich Bortkevich (August 7, 1868 -- July 15, 1931) was born in Petersburg into a family of Russified Polish nobility. After moving to Germany he changed his name and became Ladislaus von Bortkiewicz (his name is abbreviated as V. I. or L. B. in the paper, respectively). His mother was Helene, née von Rokicki, and father, Iosif Ivanovich, a colonel in the Russian army, later a notary public and teacher of mathematics in a gymnasium....