Edmund Georg Hermann Landau (14 February 1877 – 19 February 1938) was a German Jewish mathematician who worked in the fields of number theory and complex analysis.

Edmund Landau was born in Berlin to a wealthy Jewish family. His father was Leopold Landau, a gynecologist. His mother was Johanna Jacoby from the well known German Jewish Jacoby banking family. Landau studied mathematics at the University of Berlin and received his doctorate in 1899 and his habilitation (the post-doctoral qualification required in German universities) in 1901. His doctoral thesis was 14 pages long. In 1905 he married Marianne Ehrlich, the daughter of the biologist Paul Ehrlich, who was awarded the 1908 Nobel Prize in Physiology or Medicine.

Ludwig Windthorst (17 January 1812 – 14 March 1891), was a German politician of the Catholic Centre Party, the most notable opponent of Chancellor Otto von Bismarck during the Prussian-led unification of Germany and the Kulturkampf.

Windthorst was born at Kaldenhof manor in the present-day municipality of Ostercappeln, in the lands of the former Prince-Bishopric of Osnabrück, which had been securalised to the Electorate of Hanover under the Protestant Welf dynasty in 1803. The growth-restricted boy was raised in a Roman Catholic family, which for some generations had held important posts in the bishopric's civil service. Windthorst became a half-orphan at the age of ten, when his father died in 1822. He was educated at the Gymnasium Carolinum, an endowed school at Osnabrück which he left with excellent Abitur exams, and from 1830 studied law at the universities of Göttingen and Heidelberg. Influenced by the rise of liberalism during the Vormärz era and the 1832 Hambach Festival as well as by the Catholic theologian Georg Hermes, Windthorst tried to bring his Catholic confession in accordance with the ideals of liberty, civil rights and national unity.

Teiji Takagi (高木 貞治 Takagi Teiji, April 21, 1875 – February 28, 1960) was a Japanese mathematician, best known for proving the Takagi existence theorem in class field theory.

He was born in the mountainous and rural area of the Gifu Prefecture, Japan. He began learning mathematics in middle school, reading texts in English since none were available in Japanese. After attending a high school for gifted students, he went on to the University of Tokyo, at that time the only university in Japan. There he learned mathematics from such European classic texts as Salmon's Algebra and Weber's Lehrbuch der Algebra. Aided by Hilbert, he then studied at Göttingen. Aside from his work in algebraic number theory he wrote a great number of Japanese textbooks on mathematics and geometry.

He was also instrumental during World War II in the development of Japanese encryption systems; see Purple.